2SD2403-GY(T1-AZ) - RENESAS TECHNOLOGY

Datasheet

○Product structure:Silicon monolithic integrated circuit ○This product is not designed protection against radioactive rays

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Sound Processors for Car Audios

General-Purpose Electronic

Volume with Built-in Advanced Switch

BD37034FV-M

General Description

BD37034FV-M is sound processors for car audio. The

functions are stereo 5 input selector, volume, 3-band

equalizer, loudness, 6ch fader, mixing, HPF for front and

rear, LPF for subwoofer, anti-aliasing-filter, Hi-Voltage

output, output level detector. Moreover, “Advanced

switch circuit”, that is ROHM original technology, can

reduce various switching noise (ex. No-signal, low

frequency likes 20Hz & large signal inputs). “Advanced

switch” makes control of microcomputer easier, and can

construct high quality car audio system.

Features

 Reduce switching noise of volume, mute, fader

volume, mixing volume, bass, middle, treble,

loudness by using advanced switch circuit

[Possible to control all steps].

 Built-in input selector (single 3 / diff 2).

 Decrease the number of external components by

built-in 3-band equalizer filter, LPF for subwoofer,

loudness filter. And, possible to control Q, Gv, fo

of 3-band equalizer and fc of LPF, Gv, fo of

loudness by I2C BUS control freely.

 Built-in mixing volume, Hi-Voltage output.

 Built-in anti-aliasing-filter, anti-GSM-noise-filter.

 Package is SSOP-B28. Putting input-terminals

together and output-terminals together can make

PCB layout easier and can makes area of PCB

smaller.

 It is possible to control by 3.3V / 5V for I2C BUS.

 AEC-Q100 Qualified.

Applications

 It is the optimal for the car audio. Besides, it is

possible to use for the audio equipment of mini

Compo, micro Compo, TV etc with all kinds.

Key Specifications

 Total harmonic distortion: 0.004%(Typ.)

 Maximum input voltage: 2.1Vrms(Typ.)

 Cross-talk between selectors: 100dB(Typ.)

 Ripple rejection -65dB(Typ.)

 Output noise voltage: 6µVrms(Typ.)

 Residual output noise voltage: 4µVrms(Typ.)

 Operating Range of Temperature: -40℃ to +85℃

package(s) W(Typ.) x D(Typ.) x H(Max.)

SSOP-B28 10.00mm x 7.60mm x 1.35mm

SSOP-B28

Typical Application Circuit

Figure 1. Application Circuit Diagram

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Pin Configuration

Pin Descriptions

Terminal

Number

Terminal

Name Description Terminal

Number

Terminal

Name Description

1 A1 A input terminal of 1ch 15 MUTE External compulsory mute terminal

2 A2 A input terminal of 2ch 16 LRST/OLDC

・Level meter reset terminal

・Filter output terminal of output level

detector

3 B1 B input terminal of 1ch 17 LOUT/OLD

・Output terminal for Level meter

・Output terminal of output level

detector

4 B2 B input terminal of 2ch 18 OUTS2 SW output terminal of 2ch

5 C1 C input terminal of 1ch 19 OUTS1 SW output terminal of 1ch

6 C2 C input terminal of 2ch 20 OUTR2 Rear output terminal of 2ch

7 DP1 D positive input terminal of 1ch 21 OUTR1 Rear output terminal of 1ch

8 DN D negative input terminal 22 OUTF2 Front output terminal of 2ch

9 DP2 D positive input terminal of 2ch 23 OUTF1 Front output terminal of 1ch

10 EP1 E positive input terminal of 1ch 24 VCCL VCCL terminal for power supply

11 EN1 E negative input terminal of 1ch 25 SCL I2C Communication clock terminal

12 MIN/EN2

・Mixing input terminal

・E negative input terminal of 2ch

26 SDA I2C Communication data terminal

13 EP2 E positive input terminal of 2ch 27 GND GND terminal

14 VCCH VCCH terminal for power supply 28 VREF VREF terminal

Figure 2. Pin configuration

A1 1

SSOP-B28

(TOP VIEW)

A2 2

B1 3

B2 4

C1 5

C2 6

DP1 7

DN 8

DP2 9

EP1 10

EN1 11

MIN/EN2 12

EP2 13

VCCH 14

19 OUTS1

18 OUTS2

17 LOUT/OLD

16 LRST/OLDC

15 MUTE

24 VCCL

23 OUTF1

22 OUTF2

21 OUTR1

20 OUTR2

28 VREF

27 GND

26 SDA

25 SCL

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Block Diagram

Figure 3. Block Diagram

Absolute Maximum Ratings

Parameter Symbol Limits Unit

Power supply Voltage VCCL※1 10.0 V

VCCH※1 13.5 V

Input Voltage Vin※1 VCCL+0.3 to GND-0.3

Only SCL,SDA 7 to GND-0.3 V

Power Dissipation Pd 1.06 ※2 W

Storage Temperature Tastg -55 to +150 ℃

※Maximum voltage which can be impressed referencing GND. Operation using batteries which is used in automobiles directly cannot

be guaranteed.

※2 This value decreases 8.5mW/℃ for Ta=25℃ or more.

ROHM standard board shall be mounted

Thermal resistance θja = 117.6(℃/W)

ROHM Standard board Size:70×70×1.6(㎣)

Material:A FR4 grass epoxy board(3% or less of copper foil area)

Operating Range Parameter Symbol Limits Unit

Power supply voltage VCCL 7.0 to 9.5 V

VCCH VCCL to 13.0 V

Temperature Topr -40 to +85 ℃

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Electrical Characteristic

Unless specified particularly Ta=25℃, VCCL=VCCH=8.5V, f=1kHz, Vin=1Vrms, Rg=600Ω, RL=10kΩ, A input

Input Gain, Volume, Tone control, Loudness, Fader=0dB, LPF, HPF=OFF, Mix OFF, anti-aliasing-filter OFF

BLOCK

Item Symbol Limit Unit Condition

Min. Typ. Max.

GENERAL

Current upon no signal IQ - 36 49 mA No signal

Voltage gain G

V

-1.5 0 +1.5

dB Gv=20log(VOUT/VIN)

Channel balance CB -1.5 0 +1.5

dB CB = GV1-GV2

Total harmonic distortion 1 ＊

THD+N1

- 0.004

0.05

% VOUT=1Vrms

BW=400-30KHz

VCCH=8.5V(Hi-Voltage OFF)

Total harmonic distortion 2 ＊ THD+N2

- 0.002

0.05

% VIN=1Vrms

BW=400-30KHz

VCCH=12V(Hi-Voltage ON)

Output noise voltage 1 ＊ VNO1 - 6 12 µVrms Rg = 0Ω

BW = IHF-A

VCCH=8.5V(Hi-Voltage OFF)

Front/Rear Output noise voltage

2 Front/Rear ＊ VNO2 - 16 32 µVrms Rg = 0Ω

BW = IHF-A

VCCH=12V(Hi-Voltage ON)

Subwoofer Output noise voltage

3 Subwoofer ＊ VNO3 - 22 44 µVrms Rg = 0Ω

BW = IHF-A

VCCH=12V(Hi-Voltage ON)

Residual output noise voltage 1＊ VNOR1 - 4 10 µVrms Fader = -∞dB

Rg = 0Ω, BW = IHF-A

VCCH=8.5V(Hi-Voltage OFF)

Front/Rear Residual output noise

voltage 2 Front/Rear＊ VNOR2 - 11 22 µVrms Fader = -∞dB

Rg = 0Ω, BW = IHF-A

VCCH=12V(Hi-Voltage ON)

Subwoofer Residual output noise

voltage 3 Subwoofer＊ VNOR3 - 16 32 µVrms Fader = -∞dB

Rg = 0Ω,BW = IHF-A

VCCH=12V(Hi-Voltage ON)

Cross-talk between channels ＊ CTC - -100

-85 dB Rg = 0Ω

CTC=20log(VOUT/VIN)

BW = IHF-A

Ripple rejection RR - -65 -40 dB f=1kHz, VRR=100mVrms

RR=20log(VCC IN/VOUT)

Input_Selector

Input impedance R

IN

70 100 130 kΩ

Maximum input voltage VIM 2.0 2.1 - Vrms VIM at THD+N(VOUT)=1%

BW=400-30KHz

Cross-talk between selectors ＊ CTS - -100

-85 dB Rg = 0Ω

CTS=20log(VOUT/VIN)

BW = IHF-A

Common mode rejection ratio ＊ CMRR 46 60 - dB

XP1 and XN input

XP2 and XN input

CMRR=20log(VIN/VOUT)

BW = IHF-A

[※X・・・D/E]

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BLOCK

Item Symbol Limit Unit Condition

Min. Typ. Max.

Input Gain

Maximum input gain Gv MAX +14 +16 +18 dB Input Gain +16dB

VIN=100mVrms

Gin=20log(VOUT/VIN)

Minimum input gain Gv MIN -2 0 +2 dB Input Gain 0dB

VIN=1Vrms

Gin=20log(VOUT/VIN)

Gain set error GV ERR1 -2 0 +2 dB GAIN=+16to+1dB

Volume

Maximum boost gain Gv MAX +13 +15 +17 dB Volume +15dB

VIN=100mVrms

Gin=20log(VOUT/VIN)

Maximum attenuation ＊ Gv MIN -83 -79 -75 dB Volume -79dB

VIN=2Vrms

Gin=20log(VOUT/VIN)

Gain set error G

V

ERR1

-2 0 +2 dB GAIN=+15to+1dB

Attenuation set error G

V

ERR2

-2 0 +2 dB ATT=0dBto-79dB

Mute

Mute attenuation ＊ GMUTE - -100

-85 dB Mute ON

Gmute=20log(VOUT/VIN)

BW = IHF-A

Bass

Maximum boost gain GB BST +13 +15 +17 dB Gain=+15dB f=100Hz

VIN=100mVrms

GB=20log (VOUT/VIN)

Maximum cut gain GB CUT -17 -15 -13 dB Gain=-15dB f=100Hz

VIN=2Vrms

GB=20log (VOUT/VIN)

Gain set error G

B

ERR

-2 0 +2 dB Gain=+15to-15dB f=100Hz

Middle

Maximum boost gain GM BST +13 +15 +17 dB Gain=+15dB f=1kHz

VIN=100mVrms

GM=20log (VOUT/VIN)

Maximum cut gain GM CUT -17 -15 -13 dB Gain=-15dB f=1kHz

VIN=2Vrms

GM=20log (VOUT/VIN)

Gain set error G

M

ERR

-2

0 +2 dB Gain=+15to-15dB f=1kHz

Treble

Maximum boost gain GT BST +13 +15 +17 dB Gain=+15dB f=10kHz

VIN=100mVrms

GT=20log (VOUT/VIN)

Maximum cut gain GT CUT -17 -15 -13 dB Gain=-15dB f=10kHz

VIN=2Vrms

GT=20log (VOUT/VIN)

Gain set error G

T

ERR

-2

0 +2 dB Gain=+15to-15dB f=10kHz

LOUDN

ESS

Maximum gain GL MAX -17 -15 -13 dB Gain -15dB f=800Hz

VIN=1Vrms

GL=20log(VOUT/VIN)

Gain set error GL ERR -2 0 +2 dB Gain=-15 to-1dB

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*VP-9690A(Average value detection, effective value display) filter by Matsushita Communication is used for * measurement.

Phase between input / output is same.

BLOCK

Item Symbol Limit Unit Condition

Min. Typ. Max.

Fader/Mix

Maximum boost gain GF BST +13 +15 +17 dB Fader/Mix=+15dB

VIN=100mVrms

GF=20log(VOUT/VIN)

Maximum attenuation ＊ GF MIN - -100

-85 dB Fader=-∞dB, Mix=OFF

GF=20log(VOUT/VIN)

BW = IHF-A

Gain set error GF ERR -2 0 2 dB Gain=+15 to +1dB

Attenuation set error 1 GF ERR1 -2 0 2 dB ATT=-1 to -15dB

Attenuation set error 2 GF ERR2 -3 0 3 dB ATT=-16 to -47dB

Attenuation set error 3 GF ERR3 -4 0 4 dB ATT=-48 to -79dB

OUTPUT

Output impedance ROUT - - 50 Ω VIN=100 mVrms

Maximum output voltage1 VOM1 2.50

2.75

- Vrms

THD+N=1%

BW=400-30KHz

VCCH=8.5V, LVS=+3dB

(Hi-Voltage OFF)

Maximum output voltage2 VOM2 3.75

4 - Vrms THD+N=1%

BW=400-30KHz

VCCH=12V(Hi-Voltage ON)

Level

Meter

Maximum output voltage VL MAX 2.8 3.1 3.5 V

Maximum offset voltage VL OFF - 15 100 mV

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Typical Performance Curve(s)

Figure 6. VCCL=VCCH vs Iq Figure 7. THD vs Vin / Vo

Figure 4. VCCL vs Iq (VCCH=OPEN) Figure 5. VCCH vs Iq (VCCL=OPEN)

0.001

0.010

0.100

1.000

10.000

0.001 0.010 0.100 1.000 10.000

Vin [Vrms]

THD+n [%]

0.001

0.010

0.100

1.000

10.000

Vo [Vrms]

0

10

20

30

40

7889910

VCC [V]

Iq [mA]

0

10

20

30

40

7889910

VCC [V]

Iq [mA]

0

1

2

3

4

5

6

7

8

9

10

7 8 9 10 11 12 13

VCC [V]

Iq [mA]

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Figure 10. Loudness Figure 11. Anti aliasing Filter

Figure 8. CMRR Figure 9. PSRR

-20

-15

-10

-5

0

5

10 100 1000 10000 100000

Frequency [Hz]

Gain [dB]

-20

-15

-10

-5

0

5

10 100 1000 10000 100000

Frequency [Hz]

Gain [dB]

-100

-80

-60

-40

-20

0

10 100 1000 10000 100000

Frequency [Hz]

Gain [dB]

-100

-80

-60

-40

-20

0

10 100 1000 10000 100000

Frequency [Hz]

Gain [dB]

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Figure 12. Bass gain vs frequency Figure 13. Middle gain vs frequency

Figure 14. Treble gain vs frequency Figure 15. LPF

-100

-80

-60

-40

-20

0

10 100 1000 10000 100000

Frequency [Hz]

Gain [dB]

-20

-15

-10

-5

0

5

10

15

20

10 100 1000 10000 100000

Frequency [Hz]

Gain [dB]

-20

-15

-10

-5

0

5

10

15

20

10 100 1000 10000 100000

Frequency [Hz]

Gain [dB]

-20

-15

-10

-5

0

5

10

15

20

10 100 1000 10000 100000

Frequency [Hz]

Gain [dB]

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I2C

BUS

CONTROL SIGNAL SPECIFICATION

(1) Electrical specifications and timing for bus lines and I/O stages

Figure 16. Definition of timing on the I2C-bus

Table 1 Characteristics of the SDA and SCL bus lines for I2C-bus devices(Ta=25℃, VCCL=8.5V)

Parameter Symbol Fast-mode I

2

C-bus Unit

Min. Max.

1 SCL clock frequency fSCL 0 400 kHz

2 Bus free time between a STOP and START condition tBUF 1.3 － µS

3 Hold time (repeated) START condition. After this period, the

first clock pulse is generated tHD;STA 0.6 － µS

4 LOW period of the SCL clock tLOW 1.3 － µS

5 HIGH period of the SCL clock tHIGH 0.6 － µS

6 Set-up time for a repeated START condition tSU;STA 0.6 － µS

7 Data hold time tHD;DAT 0 － µS

8 Data set-up time tSU;DAT 100 － ns

9 Set-up time for STOP condition tSU;STO 0.6 － µS

All values referred to VIH min. and VIL max. Levels (see Table 2).

Table 2 Characteristics of the SDA and SCL I/O stages for I2C-bus devices

Parameter Symbol Fast-mode devices Unit

Min. Max.

10

LOW level input voltage VIL -0.3 1 V

11

HIGH level input voltage VIH 2.3 5 V

12

Pulse width of spikes which must be suppressed by the input

filter. tSP 0 50 ns

13

LOW level output voltage: at 3mA sink current VOL1 0 0.4 V

14

Input current each I/O pin with an input voltage between 0.4V

and 4.5V Ii -10 10 µA

SDA

S

SCL

t

LOW

t

R

t

HD;DAT

P

t

HD;STA

t

HIGH

t

BUF

t

F

t

SU;DAT

t

SU;STA

t

SU;STO

t

SP

t

HD;STA

Sr

P

Figure 17.

Command timing example in the

I2C data transmission

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(2)I2C BUS FORMAT

MSB LSB MSB LSB MSB LSB

S

Slave Address A

Select Address A

Data A

P

1bit 8bit 1bit 8bit 1bit 8bit 1bit 1bit

S = Start conditions (Recognition of start bit)

Slave Address = Recognition of slave address. 7 bits in upper order are voluntary.

The least significant bit is “L” due to writing.

A = ACKNOWLEDGE bit (Recognition of acknowledgement)

Select Address = Select every of volume, bass and treble.

Data = Data on every volume and tone.

P = Stop condition (Recognition of stop bit)

(3)I2C BUS Interface Protocol

1)Basic form

S

Slave Address A

Select Address A

Data A

P

MSB LSB MSB LSB MSB LSB

2)Automatic increment(Select Address increases (+1) according to the number of data)

S

Slave Address A

Select Address A

Data1 A

Data2 A

････

DataN

A

P

MSB LSB MSB LSB MSB LSB MSB LSB MSB LSB

(Example)①Data 1 is set as data of Select Address (20h).

②Data 2 is set as data of Select Address +1 (28h).

③Data N is set as data of Select Address +N-1.

3)Configuration unavailable for transmission (In this case, only Select Address 1 is set.)

S

Slave Address

A

Select Address1

A

Data A

Select Address 2

A

Data

A

P

MSB LSB MSB LSB MSB LSB MSB LSB MSB LSB

(Note)If any data is transmitted as Select Address 2 next to data,

It is recognized as data, not as Select Address 2.

(4)Slave Address

MSB LSB

A6 A5 A4 A3 A2 A1 A0 R/W

1 0 0 0 0 0 0 0

80H

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(5)Select Address and Data

Items

Select

Address

(hex)

MSB Data LSB

D7 D6 D5 D4 D3 D2 D1 D0

Initial Setup1 01 Advanced

Switch

ON/OFF

Anti Alias

Filter

ON/OFF

Advanced Switch

Time of

Volume/Fader/Mix

/Tone/Loudness

Level

Shift Hi-voltage

ON/OFF

Advanced Switch

Time of Mute

LPF Setup 02 LPF

Phase

0°/180°

Level

Meter

Reset

Subwoofer Output

Selector

Subwoofer

Input

Selector1

Subwoofer LPF fc

Initial Setup2 03 Mixing Input

Selector Loudness f0 0 0 Level

Meter

ON/OFF

Initial Setup3 04 1ch Mix

Input sel

2ch Mix

Input sel

Rear

Input

Selector

Front

Input

Selector

Subwoofer Input

Selector2 HPF fc

Input Selector 05 Full-diff

Type 0 0 Input Selector

Input Gain 06 MUTE

ON/OFF

0 0 Input Gain

Volume Gain 20 Volume Gain / Attenuation

Fader 1ch Front

28 Fader Gain / Attenuation

Fader 2ch Front

29 Fader Gain / Attenuation

Fader 1ch Rear 2A Fader Gain / Attenuation

Fader 2ch Rear 2B Fader Gain / Attenuation

Fader 1ch Sub 2C Fader Gain / Attenuation

Fader 2ch Sub 2D Fader Gain / Attenuation

Mixing1 Gain 30 Mixing Gain / Attenuation

Mixing2 Gain 31 Mixing Gain / Attenuation

Bass setup 41 0 0 Bass f0 0 0 Bass Q

Middle setup 44 0 0 Middle f0 0 0 Middle Q

Treble setup 47 0 0 Treble f0 0 0 0 Treble Q

Bass Gain 51 Bass

Boost/Cut

0 0 Bass Gain

Middle Gain 54 Middle

Boost/Cut

0 0 Middle Gain

Treble Gain 57 Treble

Boost/Cut

0 0 Treble Gain

Loudness Gain 75 0 HICUT Loudness Gain

Output Level

Detector 90 0 0 Threshold

Level Select OUT F1

ON/OFF

OUT F2

ON/OFF

OUT R1

ON/OFF

OUT R2

ON/OFF

Initial Setup4 A0 0 0 0 0 0 0 0 0

Initial Setup5 A1 0 0 0 0 0 0 0 0

Initial Setup6 A2 0 1 0 1 0 0 0 1

Initial Setup7 A3 0 0 1 0 0 0 0 0

System Reset FE 1 0 0 0 0 0 0 1

: Advanced Switch

※(Set up bit (It is written with “0” by the above table) which hasn’t been used in “0”.

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Note

1. In function changing of the hatching part, it works Advanced switch..

2. Upon continuous data transfer, the Select Address is circulated by the automatic increment function, as shown below.

3. For the function of input selector and subwoofer input select etc, it is not corresponded for advanced switch.

Therefore, please apply mute on the side of a set when changes these setting.

4. When using mute function of this IC at the time of changing input selector, please switch mute ON/OFF

for waiting advanced-mute time.

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Select address 01(hex) Default:8’ha4

Function Name Mode MSB Initial Setup LSB

D7 D6 D5 D4 D3 D2 D1 D0

Advanced Switch

Time of Mute

0.6msec

0 0

1.0msec 0 1

1.4msec 1 0

3.2msec 1 1

Hi-voltage

ON/OFF OFF 0

ON 1

Level Shift 0dB 0

+3dB 1

Advanced Switch

Time of

Volume /Fader

/Tone/Loudness

4.7msec

0 0

7.2msec 0 1

11.2msec 1 0

14.4msec 1 1

Anti Alias Filter

ON/OFF OFF 0

ON 1

Advanced Switch

ON/OFF OFF 0

ON 1

Select address 02(hex) Default:8’h00

Function Name Mode MSB LPF Setup LSB

D7 D6 D5 D4 D3 D2 D1 D0

Subwoofer

LPF fc

55Hz

0 0 0

85Hz 0 0 1

120Hz 0 1 0

160Hz 0 1 1

PASS 1 0 0

Prohibition 1 0 1

1 1 0

1 1 1

Subwoofer

Input Selector1 Loudness 0

Input Selector

1

Subwoofer

Output Selector

Subwoofer

1ch(S1/S1) 0 0

Front(F1/F2) 0 1

Rear(R1/R2) 1 0

Subwoofer(S1/

S2) 1 1

Level Meter

Reset (*1) Hold 0

Reset 1

LPF Phase

0°/180° (*2) 0° 0

180° 1

: Initial condition

(*1): If “Level Meter Reset” is set as Reset(“b1), a reset pulse will be outputted only once to a level meter block.

Also about this register, after a reset pulse output returns to a Hold(“b0) state, without holding a Reset(“b1) state.

Therefore, in order to change into a Hold state, it is not necessary to carry out a register setup again.

(*2): If Subwoofer LPF fc is set as 「PASS」('b000), LPF PHASE is compulsorily fixed to 0°('b0).

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0C2C0E100010

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4.OCT.2013 Rev.002

www.rohm.com

TSZ22111・15・001

Select address 03(hex) Default:8’h01

Function

Name Mode Pin MSB

Initial Setup2 LSB

1p 1n

2n

2p D7 D6 D5 D4 D3 D2 D1 D0

Level Meter

ON/OFF(*1) Output Level Detector Mode 0

Level Meter Mode 1

Loudness

f0

400Hz

0 0

800Hz 0 1

2400Hz 1 0

Prohibition 1 1

Mixing Input

Selector

(*2)

Mix

MIN_

EN2 - MIN_E

N2 0 0 0

Prohibition 0 0 1

A_Single

A1

- A2

0 1 0

D_Diff DP1

DN DP2

0 1 1

B_Single

B1

- B2

1 0 0

E_Diff EP1

EN1 EP2

1 0 1

E_Full-diff EP1

EN

1 MIN_

EN2

EP2

1 1 0

Prohibition 1 1 1

(*1): When you use “Output level detector”, please set this register of D0 as 0.

Since “Level Meter” and “Output Level Detector” are sharing the terminal, concurrent use is impossible.

Default setup is “Level Meter”

D0 16pin 17pin

0 OLDC

Filter output terminal of output

level detector

OLD Output terminal of output

level detector

1 LRST

Level meter reset terminal LOUT Output terminal for Level

meter

(*2): When you set Mixing Input Selector as “Mix”('b000), please do not set

input Selector(Select Address 05, D0 to D4) as “E_Full_Diff”(’b 01000).

When you set Mixing Input Selector as “E_Diff”('b101), please do not set

input Selector(Select Address 05, D0 to D4) as “E_Full_Diff”(’b 01000).

When you set Mixing Input Selector as “E_Full_Diff”(’b110), please do not set

input Selector(Select Address 05, D0 to D4) as “E_Diff”(’b 00111).

Select address 04(hex) Default:8’h80

Function Name Mode MSB HPF Setup LSB

D7 D6 D5 D4 D3 D2 D1 D0

HPF fc

55Hz

0 0

85Hz 0 1

120Hz 1 0

160Hz 1 1

Subwoofer

Input Selector2

Subwoofer Input

Selector1

0 0

LPF ON 0 1

HPF ON 1 0

Prohibition 1 1

Front Input

Selector Loudness 0

HPF ON 1

Rear Input

Selector Loudness 0

HPF ON 1

1ch Mixing

Input Selector 1ch 0

2ch 1

2ch Mixing

Input Selector 1ch 0

2ch 1

: Initial condition

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Datasheet

BD37034FV-M

TSZ02201

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0C2C0E100010

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2

4.OCT.2013 Rev.002

www.rohm.com

TSZ22111・15・001

Select address 05(hex) Default:8’h00

Function

Name Mode Pin MSB

Initial Setup2 LSB

1p 1n

2n 2p D7 D6 D5 D4 D3 D2 D1 D0

Input

Selector

(*1)

A_Single A1

- - A2

0 0 0 0 0

B_Single B1

- - B2

0 0 0 0 1

C_Single C1

- - C2

0 0 0 1 0

D_Single DP1

- - DP2

0 0 0 1 1

E1_Single

EP1

- - EN1

0 1 0 1 0

E2_Single

EN2

- - EP2

0 1 0 1 1

D_Diff DP1

- - DP2

0 0 1 1 0

E_Diff EP1

DN EP2

0 0 1 1 1

E_Full_Diff

EP1

EN1 EP2

0 1 0 0 0

Proibition Other setting

Input short 0 1 0 0 1

Full-diff

Type Negative input 0

Bias 1

(*1): There is combination which shares an input terminal depending on the combination of

“Input Selector” (Select Address 05, D0 to D4) and “Mixing Input Selector” (Select Address 03, D5 to D7).

Be careful not to set up the following combination.

Input Selector Mixing Input Selector

Mode Pin Mode Pin

1p 1n 2n 2p 1p 1n 2n 2p

E_Full_Diff EP1 EN1 MIN_EN2

EP2

Mix MIN_EN2 - - MIN_EN2

E_Full_Diff EP1 EN1 MIN_EN2

EP2

E_Diff EP1 EN1 EP2

E_Full_Diff

EP1 EN1 MIN_EN2

EP2

Select address 06 (hex) Default:8’ha0

Function Name

Gain

MSB Input Selector LSB

D7 D6 D5 D4 D3 D2 D1 D0

Input Gain

0dB

0 0 0 0 0

1dB 0 0 0 0 1

2dB 0 0 0 1 0

3dB 0 0 0 1 1

4dB 0 0 1 0 0

5dB 0 0 1 0 1

6dB 0 0 1 1 0

7dB 0 0 1 1 1

8dB 0 1 0 0 0

9dB 0 1 0 0 1

10dB 0 1 0 1 0

11dB 0 1 0 1 1

12dB 0 1 1 0 0

13dB 0 1 1 0 1

14dB 0 1 1 1 0

15dB 0 1 1 1 1

16dB 1 0 0 0 0

(16dB) 1 0 0 0 1

(16dB) 1 0 0 1 0

(16dB) 1 0 0 1 1

(16dB) 1 0 1 0 0

Prohibition Other setting

Mute

ON/OFF OFF 0

ON 1

: Initial condition

17/44

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BD37034FV-M

TSZ02201

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0C2C0E100010

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4.OCT.2013 Rev.002

www.rohm.com

TSZ22111・15・001

Select address 20 (hex) Default:8'h00

Function Name

Mode

MSB Volume Gain LSB

D7 D6 D5 D4 D3 D2 D1 D0

Volume

Gain

Prohibition 0 0 0 0 0 0 0 0

…

0 1 1 1 0 0 0 0

+15dB 0 1 1 1 0 0 0 1

+14dB 0 1 1 1 0 0 1 0

+13dB 0 1 1 1 0 0 1 1

+12dB 0 1 1 1 0 1 0 0

+11dB 0 1 1 1 0 1 0 1

+10dB 0 1 1 1 0 1 1 0

+9dB 0 1 1 1 0 1 1 1

+8dB 0 1 1 1 1 0 0 0

+7dB 0 1 1 1 1 0 0 1

+6dB 0 1 1 1 1 0 1 0

+5dB 0 1 1 1 1 0 1 1

+4dB 0 1 1 1 1 1 0 0

+3dB 0 1 1 1 1 1 0 1

+2dB 0 1 1 1 1 1 1 0

+1dB 0 1 1 1 1 1 1 1

-0dB 1 0 0 0 0 0 0 0

-1dB 1 0 0 0 0 0 0 1

-2dB 1 0 0 0 0 0 1 0

-3dB 1 0 0 0 0 0 1 1

-4dB 1 0 0 0 0 1 0 0

-5dB 1 0 0 0 0 1 0 1

-6dB 1 0 0 0 0 1 1 0

-7dB 1 0 0 0 0 1 1 1

-8dB 1 0 0 0 1 0 0 0

-9dB 1 0 0 0 1 0 0 1

-10dB 1 0 0 0 1 0 1 0

-11dB 1 0 0 0 1 0 1 1

-12dB 1 0 0 0 1 1 0 0

-13dB 1 0 0 0 1 1 0 1

-14dB 1 0 0 0 1 1 1 0

-15dB 1 0 0 0 1 1 1 1

-16dB 1 0 0 1 0 0 0 0

-17dB 1 0 0 1 0 0 0 1

-18dB 1 0 0 1 0 0 1 0

-19dB 1 0 0 1 0 0 1 1

-20dB 1 0 0 1 0 1 0 0

: Initial condition

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Datasheet

BD37034FV-M

TSZ02201

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0C2C0E100010

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4.OCT.2013 Rev.002

www.rohm.com

TSZ22111・15・001

Function Name

Mode

MSB Volume Gain LSB

D7 D6 D5 D4 D3 D2 D1 D0

Volume

Gain

-21dB 1 0 0 1 0 1 0 1

-22dB 1 0 0 1 0 1 1 0

-23dB 1 0 0 1 0 1 1 1

-24dB 1 0 0 1 1 0 0 0

-25dB 1 0 0 1 1 0 0 1

-26dB 1 0 0 1 1 0 1 0

-27dB 1 0 0 1 1 0 1 1

-28dB 1 0 0 1 1 1 0 0

-29dB 1 0 0 1 1 1 0 1

-30dB 1 0 0 1 1 1 1 0

-31dB 1 0 0 1 1 1 1 1

-32dB 1 0 1 0 0 0 0 0

-33dB 1 0 1 0 0 0 0 1

-34dB 1 0 1 0 0 0 1 0

-35dB 1 0 1 0 0 0 1 1

-36dB 1 0 1 0 0 1 0 0

-37dB 1 0 1 0 0 1 0 1

-38dB 1 0 1 0 0 1 1 0

-39dB 1 0 1 0 0 1 1 1

-40dB 1 0 1 0 1 0 0 0

-41dB 1 0 1 0 1 0 0 1

-42dB 1 0 1 0 1 0 1 0

-43dB 1 0 1 0 1 0 1 1

-44dB 1 0 1 0 1 1 0 0

-45dB 1 0 1 0 1 1 0 1

-46dB 1 0 1 0 1 1 1 0

-47dB 1 0 1 0 1 1 1 1

-48dB 1 0 1 1 0 0 0 0

-49dB 1 0 1 1 0 0 0 1

-50dB 1 0 1 1 0 0 1 0

-51dB 1 0 1 1 0 0 1 1

-52dB 1 0 1 1 0 1 0 0

-53dB 1 0 1 1 0 1 0 1

-54dB 1 0 1 1 0 1 1 0

-55dB 1 0 1 1 0 1 1 1

-56dB 1 0 1 1 1 0 0 0

-57dB 1 0 1 1 1 0 0 1

-58dB 1 0 1 1 1 0 1 0

-59dB 1 0 1 1 1 0 1 1

-60dB 1 0 1 1 1 1 0 0

-61dB 1 0 1 1 1 1 0 1

-62dB 1 0 1 1 1 1 1 0

-63dB 1 0 1 1 1 1 1 1

-64dB 1 1 0 0 0 0 0 0

-65dB 1 1 0 0 0 0 0 1

-66dB 1 1 0 0 0 0 1 0

-67dB 1 1 0 0 0 0 1 1

-68dB 1 1 0 0 0 1 0 0

-69dB 1 1 0 0 0 1 0 1

-70dB 1 1 0 0 0 1 1 0

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Datasheet

BD37034FV-M

TSZ02201

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0C2C0E100010

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1

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2

4.OCT.2013 Rev.002

www.rohm.com

TSZ22111・15・001

Function Name

Mode

MSB Volume Gain LSB

D7 D6 D5 D4 D3 D2 D1 D0

Volume

Gain

-71dB 1 1 0 0 0 1 1 1

-72dB 1 1 0 0 1 0 0 0

-73dB 1 1 0 0 1 0 0 1

-74dB 1 1 0 0 1 0 1 0

-75dB 1 1 0 0 1 0 1 1

-76dB 1 1 0 0 1 1 0 0

-77dB 1 1 0 0 1 1 0 1

-78dB 1 1 0 0 1 1 1 0

-79dB 1 1 0 0 1 1 1 1

Prohibition 1 1 0 1 0 0 0 0

…

1 1 1 1 1 1 1 0

'-79dB 1 1 1 1 1 1 1 1

Select address 28, 29, 2A, 2B, 2C, 2D, 30, 31(hex) Default:8'hFF

Function Name

Mode

MSB Fader / Mixing Gain LSB

D7 D6 D5 D4 D3 D2 D1 D0

Fader/Mixing

Gain

Prohibition 0 0 0 0 0 0 0 0

…

0 1 1 1 0 0 0 0

+15dB 0 1 1 1 0 0 0 1

+14dB 0 1 1 1 0 0 1 0

+13dB 0 1 1 1 0 0 1 1

+12dB 0 1 1 1 0 1 0 0

+11dB 0 1 1 1 0 1 0 1

+10dB 0 1 1 1 0 1 1 0

+9dB 0 1 1 1 0 1 1 1

+8dB 0 1 1 1 1 0 0 0

+7dB 0 1 1 1 1 0 0 1

+6dB 0 1 1 1 1 0 1 0

+5dB 0 1 1 1 1 0 1 1

+4dB 0 1 1 1 1 1 0 0

+3dB 0 1 1 1 1 1 0 1

+2dB 0 1 1 1 1 1 1 0

+1dB 0 1 1 1 1 1 1 1

20/44

Datasheet

BD37034FV-M

TSZ02201

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0C2C0E100010

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4.OCT.2013 Rev.002

www.rohm.com

TSZ22111・15・001

Function Name

Mode

MSB Fader Gain LSB

D7 D6 D5 D4 D3 D2 D1 D0

Fader/Mixing

Gain

-0dB 1 0 0 0 0 0 0 0

-1dB 1 0 0 0 0 0 0 1

-2dB 1 0 0 0 0 0 1 0

-3dB 1 0 0 0 0 0 1 1

-4dB 1 0 0 0 0 1 0 0

-5dB 1 0 0 0 0 1 0 1

-6dB 1 0 0 0 0 1 1 0

-7dB 1 0 0 0 0 1 1 1

-8dB 1 0 0 0 1 0 0 0

-9dB 1 0 0 0 1 0 0 1

-10dB 1 0 0 0 1 0 1 0

-11dB 1 0 0 0 1 0 1 1

-12dB 1 0 0 0 1 1 0 0

-13dB 1 0 0 0 1 1 0 1

-14dB 1 0 0 0 1 1 1 0

-15dB 1 0 0 0 1 1 1 1

-16dB 1 0 0 1 0 0 0 0

-17dB 1 0 0 1 0 0 0 1

-18dB 1 0 0 1 0 0 1 0

-19dB 1 0 0 1 0 0 1 1

-20dB 1 0 0 1 0 1 0 0

-21dB 1 0 0 1 0 1 0 1

-22dB 1 0 0 1 0 1 1 0

-23dB 1 0 0 1 0 1 1 1

-24dB 1 0 0 1 1 0 0 0

-25dB 1 0 0 1 1 0 0 1

-26dB 1 0 0 1 1 0 1 0

-27dB 1 0 0 1 1 0 1 1

-28dB 1 0 0 1 1 1 0 0

-29dB 1 0 0 1 1 1 0 1

-30dB 1 0 0 1 1 1 1 0

-31dB 1 0 0 1 1 1 1 1

-32dB 1 0 1 0 0 0 0 0

-33dB 1 0 1 0 0 0 0 1

-34dB 1 0 1 0 0 0 1 0

-35dB 1 0 1 0 0 0 1 1

-36dB 1 0 1 0 0 1 0 0

-37dB 1 0 1 0 0 1 0 1

-38dB 1 0 1 0 0 1 1 0

-39dB 1 0 1 0 0 1 1 1

-40dB 1 0 1 0 1 0 0 0

21/44

Datasheet

BD37034FV-M

TSZ02201

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0C2C0E100010

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4.OCT.2013 Rev.002

www.rohm.com

TSZ22111・15・001

Function Name

Mode

MSB Fader Gain LSB

D7 D6 D5 D4 D3 D2 D1 D0

Fader/Mixing

Gain

-41dB 1 0 1 0 1 0 0 1

-42dB 1 0 1 0 1 0 1 0

-43dB 1 0 1 0 1 0 1 1

-44dB 1 0 1 0 1 1 0 0

-45dB 1 0 1 0 1 1 0 1

-46dB 1 0 1 0 1 1 1 0

-47dB 1 0 1 0 1 1 1 1

-48dB 1 0 1 1 0 0 0 0

-49dB 1 0 1 1 0 0 0 1

-50dB 1 0 1 1 0 0 1 0

-51dB 1 0 1 1 0 0 1 1

-52dB 1 0 1 1 0 1 0 0

-53dB 1 0 1 1 0 1 0 1

-54dB 1 0 1 1 0 1 1 0

-55dB 1 0 1 1 0 1 1 1

-56dB 1 0 1 1 1 0 0 0

-57dB 1 0 1 1 1 0 0 1

-58dB 1 0 1 1 1 0 1 0

-59dB 1 0 1 1 1 0 1 1

-60dB 1 0 1 1 1 1 0 0

-61dB 1 0 1 1 1 1 0 1

-62dB 1 0 1 1 1 1 1 0

-63dB 1 0 1 1 1 1 1 1

-64dB 1 1 0 0 0 0 0 0

-65dB 1 1 0 0 0 0 0 1

-66dB 1 1 0 0 0 0 1 0

-67dB 1 1 0 0 0 0 1 1

-68dB 1 1 0 0 0 1 0 0

-69dB 1 1 0 0 0 1 0 1

-70dB 1 1 0 0 0 1 1 0

-71dB 1 1 0 0 0 1 1 1

-72dB 1 1 0 0 1 0 0 0

-73dB 1 1 0 0 1 0 0 1

-74dB 1 1 0 0 1 0 1 0

-75dB 1 1 0 0 1 0 1 1

-76dB 1 1 0 0 1 1 0 0

-77dB 1 1 0 0 1 1 0 1

-78dB 1 1 0 0 1 1 1 0

-79dB 1 1 0 0 1 1 1 1

Prohibition 1 1 0 1 0 0 0 0

…

1 1 1 1 1 1 1 0

MUTE 1 1 1 1 1 1 1 1

: Initial condition

22/44

Datasheet

BD37034FV-M

TSZ02201

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0C2C0E100010

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4.OCT.2013 Rev.002

www.rohm.com

TSZ22111・15・001

Select address 41(hex) Default:8’h00

Function Name

Mode

MSB Bass setup LSB

D7 D6 D5 D4 D3 D2 D1 D0

Bass Q

0.5

0 0

1.0 0 1

1.5 1 0

2.0 1 1

Bass f0

60Hz

0 0

80Hz 0 1

100Hz 1 0

120Hz 1 1

Select address 44(hex) Default:8’h00

Function Name

Mode

MSB Middle setup LSB

D7 D6 D5 D4 D3 D2 D1 D0

Middle Q

0.75

0 0

1.00 0 1

1.25 1 0

1.50 1 1

Middle f0

0.5kHz

0 0

1kHz 0 1

1.5kHz 1 0

2.5kHz 1 1

Select address 47(hex) Default:8’h00

Function Name

Mode

MSB Treble setup LSB

D7 D6 D5 D4 D3 D2 D1 D0

Treble Q 0.75 0

1.25 1

Treble f0

7.5kHz

0 0

10kHz 0 1

12.5kHz 1 0

15kHz 1 1

: Initial condition

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Datasheet

BD37034FV-M

TSZ02201

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0C2C0E100010

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4.OCT.2013 Rev.002

www.rohm.com

TSZ22111・15・001

Select address 51, 54, 57(hex) Default:8'h80

Function Name Mode

MSB Bass/Middle/Treble Gain LSB

D7 D6 D5 D4 D3 D2 D1 D0

Bass

/Middle

/Treble

Gain

0dB

0 0 0 0 0

1dB 0 0 0 0 1

2dB 0 0 0 1 0

3dB 0 0 0 1 1

4dB 0 0 1 0 0

5dB 0 0 1 0 1

6dB 0 0 1 1 0

7dB 0 0 1 1 1

8dB 0 1 0 0 0

9dB 0 1 0 0 1

10dB 0 1 0 1 0

11dB 0 1 0 1 1

12dB 0 1 1 0 0

13dB 0 1 1 0 1

14dB 0 1 1 1 0

15dB 0 1 1 1 1

(15dB) 1 0 0 0 0

(15dB) 1 0 0 0 1

(15dB) 1 0 0 1 0

(15dB) 1 0 0 1 1

(15dB) 1 0 1 0 0

Prohibition

other setting

Bass/Middle/Treble

Boost/Cut Boost 0

Cut 1

Select address 75(hex) Default:8'h00

Function Name Mode

MSB Loudness Gain LSB

D7 D6 D5 D4 D3 D2 D1 D0

Loudness Gain

0dB

0 0 0 0 0

1dB 0 0 0 0 1

2dB 0 0 0 1 0

3dB 0 0 0 1 1

4dB 0 0 1 0 0

5dB 0 0 1 0 1

6dB 0 0 1 1 0

7dB 0 0 1 1 1

8dB 0 1 0 0 0

9dB 0 1 0 0 1

10dB 0 1 0 1 0

11dB 0 1 0 1 1

12dB 0 1 1 0 0

13dB 0 1 1 0 1

14dB 0 1 1 1 0

15dB 0 1 1 1 1

(15dB) 1 0 0 0 0

(15dB) 1 0 0 0 1

(15dB) 1 0 0 1 0

(15dB) 1 0 0 1 1

(15dB) 1 0 1 0 0

Prohibition

other setting

Loudness HICUT

HICUT1

0 0

HICUT2 0 1

HICUT3 1 0

HICUT4 1 1

: Initial condition

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Datasheet

BD37034FV-M

TSZ02201

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0C2C0E100010

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2

4.OCT.2013 Rev.002

www.rohm.com

TSZ22111・15・001

Select address 90(hex) Default:8'h00

Function Name Mode

MSB Output Level Detector LSB

D7 D6 D5 D4 D3 D2 D1 D0

OUT R2

ON/OFF OFF 0

ON 1

OUT R1

ON/OFF OFF 0

ON 1

OUT F2

ON/OFF OFF 0

ON 1

OUT F1

ON/OFF OFF 0

ON 1

Threshold

Level Select

±30mV

0 0

±45mV 0 1

±60mV 1 0

±75mV 1 1

: Initial condition

25/44

Datasheet

BD37034FV-M

TSZ02201

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0C2C0E100010

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2

4.OCT.2013 Rev.002

www.rohm.com

TSZ22111・15・001

Recommendation of VOLUME DIAGRAM

The example of the SET VOLUME DIAGRAM by Volume(SelectAddress 20(hex)) and Fader(SelectAddress 28,29,2A,2B,2C,

2D(hex)) is explained in the following.

Example 1 ) It is recommended when a signal level is made to attenuate, a decline by Volume is done by -24dB. It is adjusted

with Fader after -24dB. S/N ratio can improve in comparison with the case that it is made to attenuate only with Volume.

Table 1. A decline by Volume is done by -24dB. It is adjusted with Fader after -24dB.

(※Display=SET VOLUME)

Display

(※) Total Gain

[dB] Volume

[dB] Fader

[dB]

50 6 6 0

49 5 5 0

48 4 4 0

47 3 3 0

46 2 2 0

45 1 1 0

44 0 0 0

43 -1 -1 0

42 -2 -2 0

41 -3 -3 0

40 -4 -4 0

39 -5 -5 0

38 -6 -6 0

37 -7 -7 0

36 -8 -8 0

35 -9 -9 0

34 -10 -10 0

33 -11 -11 0

32 -12 -12 0

31 -13 -13 0

30 -14 -14 0

29 -15 -15 0

28 -16 -16 0

27 -17 -17 0

26 -18 -18 0

Display

(※) Total Gain

[dB] Volume

[dB] Fader

[dB]

25 -19 -19 0

24 -20 -20 0

23 -21 -21 0

22 -22 -22 0

21 -23 -23 0

20 -24 -24 0

19 -26 -24 -2

18 -28 -24 -4

17 -30 -24 -6

16 -32 -24 -8

15 -34 -24 -10

14 -36 -24 -12

13 -38 -24 -14

12 -40 -24 -16

11 -42 -24 -18

10 -44 -24 -20

9 -46 -24 -22

8 -48 -24 -24

7 -50 -24 -26

6 -52 -24 -28

5 -54 -24 -30

4 -56 -24 -32

3 -58 -24 -34

2 -60 -24 -36

1 -62 -24 -38

0 -∞ Mute Mute

26/44

Datasheet

BD37034FV-M

TSZ02201

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0C2C0E100010

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4.OCT.2013 Rev.002

www.rohm.com

TSZ22111・15・001

※When a attenuate after -32dB is used with Volume, in case of use Subwoofer Input Selector = Input Selector

(Select Address 02(hex), D3 = 1), Output level of OUTS1/S2 is attenuated 「 Volume – (-31dB) 」.

Volume

[dB] OUTS1/S2 [dB]

Select

Address

20(hex)

Subwoofer Input

Selector=Loudness

(Select Address

02(hex), D3=0)

Subwoofer Input

Selector=

Input Selector

(Select Address

02(hex), D3=1)

6 6 0

5 5 0

4 4 0

3 3 0

2 2 0

1 1 0

0 0 0

-1 -1 0

-2 -2 0

-3 -3 0

-4 -4 0

-5 -5 0

-6 -6 0

-7 -7 0

-8 -8 0

-9 -9 0

-10 -10 0

-11 -11 0

-12 -12 0

-13 -13 0

-14 -14 0

-15 -15 0

-16 -16 0

-17 -17 0

-18 -18 0

Volume

[dB] OUTS1/S2 [dB]

Select

Address

20(hex)

Subwoofer Input

Selector=Loudness

(Select Address

02(hex), D3=0)

Subwoofer Input

Selector=

Input Selector

(Select Address

02(hex), D3=1)

-19 -19 0

-20 -20 0

-21 -21 0

-22 -22 0

-23 -23 0

-24 -24 0

-26 -26 0

-28 -28 0

-30 -30 0

-32 -32 -1

-34 -34 -3

-36 -36 -5

-38 -38 -7

-40 -40 -9

-42 -42 -11

-44 -44 -13

-46 -46 -15

-48 -48 -17

-50 -50 -19

-52 -52 -21

-54 -54 -23

-56 -56 -25

-58 -58 -27

-60 -60 -29

-62 -62 -31

Figure 18. Subwoofer Input Selector = Input Selector (SelectAddress 02(hex), D3 = 1)

Table 2. Subwoofer Input Selector = Input Selector (Select Address 02(hex), D3 = 1)

Volume attenuation vs Output Level of OUTS1/S2

27/44

Datasheet

BD37034FV-M

TSZ02201

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0C2C0E100010

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4.OCT.2013 Rev.002

www.rohm.com

TSZ22111・15・001

About loudness

When Loudness is set up in on, signal level in fo (set up by (Select Address 03(hex), D3,D4))is attenuated) is made

attenuated.

Therefore to make it put emphasis on the low and high band, use volume together

Figure 19. Loudness gain vs frequency (fo=800Hz)

Table 3. A decline by Volume is done by -24dB. It is adjusted with Fader after -24dB. Loudness=ON

(※Display=SET VOLUME)

Display

(※)

Total

Gain

A [dB]

Total

Gain

B [dB]

Volume

[dB] Loudness

[dB] Fader

[dB]

25 -10 -19 -10 -9 0

24 -10 -20 -10 -10 0

23 -10 -21 -10 -11 0

22 -10 -22 -10 -12 0

21 -10-10

-23 -10 -13 0

20 -10 -24 -10 -14 0

19 -12 -26 -10 -14 -2

18 -14 -28 -10 -14 -4

17 -16 -30 -10 -14 -6

16 -18 -32 -10 -14 -8

15 -20 -34 -10 -14 -10

14 -22 -36 -10 -14 -12

13 -24 -38 -10 -14 -14

12 -26 -40 -10 -14 -16

11 -28 -42 -10 -14 -18

10 -30 -44 -10 -14 -20

9 -32 -46 -10 -14 -22

8 -34 -48 -10 -14 -24

7 -36 -50 -10 -14 -26

6 -38 -52 -10 -14 -28

5 -40 -54 -10 -14 -30

4 -42 -56 -10 -14 -32

3 -44 -58 -10 -14 -34

2 -46 -60 -10 -14 -36

1 -48 -62 -10 -14 -38

0 -∞ -∞ Mute -14 Mute

Display

(※)

Total

Gain

A [dB]

Total

Gain

B [dB]

Volume

[dB] Loudness

[dB] Fader

[dB]

50 6 6 6 0 0

49 5 5 5 0 0

48 4 4 4 0 0

47 3 3 3 0 0

46 2 2 2 0 0

45 1 1 1 0 0

44 0 0 0 0 0

43 -1 -1 -1 0 0

42 -2 -2 -2 0 0

41 -3 -3 -3 0 0

40 -4 -4 -4 0 0

39 -5 -5 -5 0 0

38 -6 -6 -6 0 0

37 -7 -7 -7 0 0

36 -8 -8 -8 0 0

35 -9 -9 -9 0 0

34 -10 -10 -10 0 0

33 -10 -10 -10 -1 0

32 -10 -10 -10 -2 0

31 -10 -10 -10 -3 0

30 -10 -10 -10 -4 0

29 -10 -10 -10 -5 0

28 -10 -10 -10 -6 0

27 -10 -10 -10 -7 0

26 -10 -10 -10 -8 0

Loudness=OFF(Select Address 75 : D4 to D0 = 0dB)

Loudness=ON(Select Address 75 : D4 to D0 = 14dB)

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Figure 20. Gain vs frequency of Table.3

Attention about Loudness ON/OFF

To make it put emphasis on the low and high band, when it is made to boost with Volume so long as it was made to

attenuate with Loudness.

・Loudness OFF →ON : Send data of loudness before volume

・Loudness ON →OFF : Send data of volume before loudness

※Transmit data in the above turn. A signal level declines first, and it is amplified after that. And so natural switching

can be realized.

Figure 21. example of data sending about Loudness ON/OFF

Total Gain B

Total Gain A

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(6)About power on reset

At on of supply voltage circuit made initialization inside IC is built-in. Please send data to all address as initial data

at supply voltage on. And please supply mute at set side until this initial data is sent.)

Item Symbol Limit Unit Condition

Min.

Typ. Max.

Rise time of VCCL Trise 33 －－ usec

VCCL rise time from 0V to 5V)

VCCL voltage of release

power on reset Vpor － 4.1 － V

(7)About external compulsory mute terminal

Mute is possible forcibly than the outside after input again department, by the setting of the MUTE terminal.

Mute Voltage Condition Mode

GND to 1.0V MUTE ON

2.3V to 5.0V MUTE OFF

Establish the voltage of MUTE in the condition to have been defined.)

About OUT-terminal(18to23pin) vs. VCCL

Output voltage of OUT terminal(18to23pin) keep fixed voltage in operational range(VCCL=7.0Vto9.5V).

Figure 22. OUT(18 to 23pin)_DC-Bias = 4.15V fixed.(Hi-Voltage Mode = OFF)

Figure 23. OUT(18 to 23pin)_DC-Bias = 6.0V fixed.(Hi-Voltage Mode = ON)

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About Advanced switching circuit

【1】About Advanced switch

1-1. Effect of Advanced switch

It is the ROHM original technology for prevention of switching noise. When gain switching such as volume and tone

control is done momentarily, a music signal doesn’t continue, and unpleasant shock noise is made. Advanced switch

can reduce shock noise with the technology which signal wave shape is changed to gently so that a music signal may

not continue drastically.

Advanced switch starts switching after the control data transmitted by a microcomputer are received. It takes one

fixed time, and wave shape transits as the above figure. The data transmitted by a microcomputer are processed inside,

and the most suitable movement is done inside the IC so that switching shock noise may not be made.)

But, it presumes by the transmitting timing when it doesn’t become intended switching wave shape because it is the

function which needs time. The example which relations with the switching time of the data transmitting timing and the

reality were shown in is given to it in the following. It asks for design when it is confirmed well.

About a kind of transmission method

・A data setup (by the data format, the thing which isn’t indicated by gray) except for the item for advanced switch

There is no regulation in transmission specially.

・The data setup (by the data format, the thing which gray indication is) of the item for advanced switch

Though there is no regulation in data transmission, the switching order when data are transmitted to several blocks

follows the

next 2-3.

【2】About transmission DATA of advanced switching item

2-1. About switching time of advanced switch

advanced switch ON/ OFF is set up in ON to make advanced switch function effective.

And, though it becomes the same completely, the movement time of advanced switch can set up only MUTE in the

independence.

As for these, set it up referring to select address 01(hex) of the data format.

There are transition time to be equivalent to the setup value, and treatment time (effect-less time) inside the IC in

advanced switch. Therefore, actual switching time (Tsoft and Tsoft, MUTE) is defined as follows.

Setup value 11.2msec should be recommended in switch time of advanced switch. But, when a shock noise level

during gain switching isn’t sufficient, it has the possibility that it can be reduced by setting it up more this long on the

actual use. But, be careful because an response in switching of around one time becomes slow when you lengthen

time.

Gain is made to change right after the data transmission momentarily. At this

time, a change of DC occurs only in the one for the difference of the amplitude

before and after the change.. The technology made to make this change slow

a change of DC

80

I2C BUS

Wave of Advanced switching

slave

select

data

switching time

Advanced switching time

Tsoft=setup value × 2

The treatment time of around 1 time needs the time of 2 times of the setup value

(movement time). (Example : in the case of 11.2msec, 22.4msec)

MUTE ON time

Tsoft,MUTE

The treatment time of around 1 time of MUTE becomes the same time as the setup value (movement time). (Example : in the case of

3.2msec, with OFF? on, each ON? off, 3.2msec

MUTE OFF time

Tsoft,MUTE

MUTE advanced switching time

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2-2. About the data transmitting timing in same block state and the switching movement.

■ Transmitting example 1

A time chart to the switching start has become the next since the data transmission.

The interval of the same blocks is fully left, and the example when data are transmitted is shown first.

And, as for enough interval, it becomes the time when setup time was multiplied by the dispersion margin 1.4.

■ Transmitting example 2

Next, when a transmitting interval isn’t sufficient, the example of (When it is shorter than the above interval.) is shown.

The next switching movement is started in succession after that movement is finished when data are transmitted

during the first switching movement.

■ Transmitting example 3

Next, the example of the switching movement when a transmitting interval was shortened more is shown.

It has the buffer which memorizes data inside the IC, and a buffer always does transmitting data. But, data of +6dB

which transmitted to the second become invalid with this example to hold only the latest data.

80 28 80

Fader Ｆ1 switch tim e

I2C BUS

Advanced switch tim e

(F1 0dB)

slave select data AKS

Fader_F1 output

80 28 FF

(F1 –INFdB)

Tsoft×1.4 msec

Fader Ｆ1 switch tim e

80 28 80

Fader_Ｆ1 switch tim e

I2C BUS

Advanced switch tim e

(F1 0dB)

slave select data AKS

Fader_F1 output

80 28 FF

(F1 –INFdB)

Fader_Ｆ1 switch tim e

Data of -6dB received from buffer : 0dB->-6dB

80 28 80 80 28 06 80 288 86

+6dB

I2C BUS

F1 built-in buffer(memory)

(FaderF1 0dB) (FaderF1 +6B) (FaderF1 -6B)

This is invalid as a result. Only an end is effective in the data transmitted during F1 switching.

FaderF1 switch time

Advanced switch time

-6dB

Data of 0dB received : -8->0dB

0dB

Replacement

FaderF1 switch time

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■ Transmitting example 4

As for handling of refresh-data, advanced switch movement isn’t started to judge for present setup data and a

difference that to be inside the IC)

2-3. About the data transmitting timing in several block state and the switching movement.)

When data are transmitted to several blocks, treatment in the BS (block state) unit is carried out inside the IC.

The movement start order of advanced switch is decided by BS in advance.)

Figure 24. The order of advanced switch start

※It is possible in the block in the same BS that switching is started at the same timing.

■Transmitting example 5

The timing of the switching start follows the figure of the former page though there is no restriction of the I2C BUS data

transmitting timing as it explained in the former knot even if it is related to the transmission to several blocks.

Therefore, it isn’t based on the data transmitting order, and an actual switching turn becomes the turn of the upper figure.

(Transmitting example 6)

Each block data is being transmitted with the transmitting example 5 separately. But, it becomes the same result even if

data are transmitted in bulk.)

80 28 80

I2C BUS

Advanced switch time

(FaderF1 0dB)

Refresh data

80 28 80

(FaderF1 0dB)

FaderF1 switch time

Because receiving refresh-data, advanced switch doesn't start.

F1 output

Fader F1

switch time

80 28 20 80 2A 80 80 2C 80

Fader F1 switch time Fader R1 switch time Fader S1 switch time

I2C BUS

Advanced switch time

Start after advanced

switch of FaderF1 Start after advanced switch of

FaderR1

(FaderF1 0dB) (FaderR1 0dB) (FaderS1 0dB)

slave select data AKS

Fader R1

switch time

Fader S1 switch time

R1 output S1 output

Select

Address

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■Transmitting example 6)

Switching of the next BS is done after the present switching completion when an actual switching order is different from

the transmitting order, and data except for the same BS are transmitted at the timing when advanced switch movement

isn’t finished.)

The case that the same BS3 and BS2 were transmitted during BS1 switching is shown with the next example.

(Transmitting example 7)

■Transmitting example 7

2-4.About Gain switch of TONE(Bass/Middle/Treble)

It becomes two-step transition movement that it passed through 0dB 【 Gain of Bass/Middle/Treble 】 to prevent the

occurrence of the switching noise when Gain is changed from boost to the cut (or, from the cut, boost). And, when

boost/cut doesn’t change, it is the same as 【 2-2 】【 2-3 】. But, it is in the same way as other switching as advanced

switch switching time.)

■Transmitting example 8

When it is changed Bass+15dB from Bass-15dB. (Initial : Bass -15dB)

80 28 80 80 2C 80 80 2A 80

Fader F1 switch time Fader R1 switch time Fader S1 switch time

I2C BUS

Advanced switch time

(FaderF1 0dB)

(FaderS1 0dB) (FaderR1 0dB)

slave select data

0dB received from buffer –INF->0dB

80 28 80 80 57 06

I2C BUS

R1 built-in buffer

BS1

(FaderF1 0dB) BS3

(Treble +6dB)

The different data (TRE) of the same one group in advanced switch in (R1) are transmitted.

FaderF1 switch time

Advanced switch time FaderR1 switch time Treble switch time

0dB received -8 ->0dB 6dB received from buffer 0dB->+6dB

80 2A 80

BS2

(

Fader

R

1

0dB

)

The data (S1) of the next group are transmitted in succession.

6dB

TRE built-in buffer

80 51 0F

Bass switch time

I2C BUS

Advanced switch time Bass switch time

-15dB -> 0dB 0dB ->+15dB

(BAS+15dB)

Bass output

I2C BUS

T

so ft

=se tup time × 2

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【3】About advanced switch of MUTE

Advanced switch of MUTE is controllable independently of other advanced switch.

There is no regulation about the timing to which MUTE is applied, and the timing to cancel.

■Transmitting example 9 Normal MUTE ON/OFF

■Transmitting example 10 The movement when it was canceled earlier than advanced switch time of MUTE

80 02 01 80 02 00

I2C BUS

（MUTE ON） (MUTE OFF)

MUTE switch time

Advanced switch time MUTE switch time

80 02 01 80 02 00

I2C BUS

MUTE switch time

Advanced switch time

MUTE switch time

（MUTE ON） (MUTE OFF)

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■Advanced switch transmitting timing list

(1) 【 MUTE 】

Stand-by advanced switch working advanced switch

Data transfer timing No constraint No constraint

Operation start timing

After send data After send data

Advanced switch time

Tsoft_MUTE※1 Tsoft_MUTE

(2) 【 VOL/FAD(F1,F2,R1,R2,S1,S2)/MIX(M1,M2)/TONE(BAS,MID.TRE,LOUD) 】

Stand-by advanced switch working advanced switch

Data transfer timing No constraint No constraint

Operation start timing

After send data After finished current work

Advanced switch time

Tsoft※2 Tsoft

(3) 【 TONE BOOST ⇔ CUT 】

Stand-by advanced switch working advanced switch

Data transfer timing No constraint No constraint

Operation start timing

After send data After finished current work

Advanced switch time

Tsoft※3 Tsoft

※1 As for Tsoft,MUTE, mentioned advanced switch of MUTE movement time is expressed to the data format.

It is equivalent by the explanation in the body in one block.

※2 As for Tsoft, the time of two times of mentioned advanced movement time is expressed to the data format.

It changes to block it in the same way by the explanation in the body by the continuance twice.

※3 About Tsoft of TONE BOOST ⇔ CUT, advanced switch treatment time is in the same way as the switching time

of the above (※2) though two times hang on the movement time because this movement comes to switch that it

passes through 0dB automatically inside the IC.

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About Output level detector

Output level detector is circuit for detection whether output level of IC are into threshold level.

You can select output of detection by “block selects (I2C control)”.

When output level are into threshold level that selected by “Threshold level select (I2C control)”,output level of OLD is

“H”(3.3V).

Select address 90(hex)

Function Name Mode

MSB Output Level Detector LSB

D7 D6 D5 D4 D3 D2 D1 D0

OUT R2

ON/OFF OFF 0

ON 1

OUT R1

ON/OFF OFF 0

ON 1

OUT F2

ON/OFF OFF 0

ON 1

OUT F1

ON/OFF OFF 0

ON 1

Threshold

Level Select

±30mV

0 0

±45mV 0 1

±60mV 1 0

±75mV 1 1

Please set Select Address 90(hex), D3toD0=0,0,0,0 at Output Level Detector OFF.

COLD = C1×Zin / ROLD

C1 : Coupling capacitance between output of BD37034FV-M and input of power-amp.

Zin : Input impedance of power-amp

ROLD : Input impedance of OLDC-port

Select Address 90(hex) Input impedance is 20kΩ at Output level detector OFF(Select Address 90(hex)

D3toD0=0,0,0,0).

Figure 25. Block diagram of output level detector

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Application Circuit Diagram

Figure 26. Application Circuit Diagram

Notes

on

wiring

① Please connect the decoupling capacitor of a power supply in the shortest distance as much as possible to GND.

② Lines of GND shall be one-point connected.

③ Wiring pattern of Digital shall be away from that of analog unit and cross-talk shall not be acceptable.

④ Lines of SCL and SDA of I2C BUS shall not be parallel if possible. The lines shall be shielded, if they are adjacent to each other.

⑤

Lines

of

analog

input

shall

not

be

parallel

if

possible

.

The

lines

shall

be

shielded

,

if

they

are

adjacent

to

each

oth

er

.

Unit

R : [Ω]

C : [F]

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Thermal Derating Curve

About the thermal design by the IC

Characteristics of an IC have a great deal to do with the temperature at which it is used, and exceeding absolute maximum

ratings may degrade and destroy elements. Careful consideration must be given to the heat of the IC from the two

standpoints of immediate damage and long-term reliability of operation.

Figure 27. Temperature Derating Curve

Power dissipation values vary according to the board on which the IC is mounted.

SSOP-B28

1.5

1.0

0.5

0.0 0 25 50 75 100 125 150

1.063W

θja = 117.6℃/W

85

Reference data

Ambient Temperature Ta(℃)

Power Dissipation Pd(W)

Measurement condition: ROHM Standard board

board Size:70×70×1.6(㎣)

material:A FR4 grass epoxy board

(3% or less of copper foil area)

Note) Values are actual measurements and are not guaranteed.

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Terminal Equivalent Circuit and Description

Terminal

No. Terminal

Name Terminal

Voltage Equivalent Circuit Terminal Description

1

2

3

4

5

6

A1

A2

B1

B2

C1

C2

4.15

A terminal for signal input.

The input impedance is 100kΩ(typ).

7

8

9

10

11

13

DP1

DN

DP2

EP1

EN1

EP2

4.15

A terminal for signal input.

The input impedance is 100kΩ(typ).

12 MIN

EN2 4.15

A terminal for signal input.

The input impedance is 100kΩ(typ).

15 MUTE -

A terminal for external compulsory mute.

If terminal voltage is High level, the mute

is off. And if the terminal voltage is Low

level, the mute is on.

18

19

20

21

22

23

OUTS2

OUTS1

OUTR2

OUTR1

OUTF2

OUTF1

4.15/6.0

HiVoltage

=OFF/ON

A terminal for fader and Subwoofer output.

The figure in the pin explanation and input/output equivalent circuit is reference value, it doesn’t guarantee the value.

GND

VCC

L

100KΩ

GND

VCC

100KΩ

Anti

ESD

GND

VCC

100KΩ

Anti

ESD

VCC

GND

VCCL

GND

1.3V

125k

5V

Anti-ESD

250k

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Terminal

No. Terminal

Name Terminal

Voltage Equivalent Circuit Terminal Description

25 SCL -

A terminal for clock input of I2C BUS

communication.

26 SDA

- A terminal for data input of I

2

C BUS

communication.

28 VREF 4.15

Voltage for reference bias of analog signal

system. The simple pre-charge circuit and

simple discharge circuit for an external

capacitor are built in.

24

14

VCCL

VCCH

8.5

8.5/12

Power supply terminal.

27 GND 0 Ground terminal.

The figure in the pin explanation and input/output equivalent circuit is reference value, it doesn’t guarantee the value.

VCC

L

GND

1.65V

VCCL

GND

1.65V

VCCL

GND

12.5k

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Terminal

No. Terminal

Name Terminal

Voltage Equivalent Circuit Terminal Description

16

LRST -

A terminal for level meter reset.

If terminal voltage is High level, the reset is

on. And if the terminal voltage is Low level,

the reset is off.

OLDC

4.15/

4.73

HiVoltage

=OFF/ON

A terminal for filter of output level detector.

Input impedance is 25k(OUTF/R both ON) or

50kΩ(OUTF/R either ON) at Output level

detector ON, 20kΩ at Output level detector

OFF.

17

LOUT

A terminal for Level meter output.

OLD 0

3.3

A terminal for output of output level detector.

The figure in the pin explanation and input/output equivalent circuit is reference value, it doesn’t guarantee the value.

VCC

GND

1.65V

100k

10k

GND

VCC

1.5k

VCCL

GND

3.3 V

1.5k

GND

VCCL

50k

OUTF2/R2

50k

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Notes for use

1.Absolute maximum rating voltage

When it impressed the voltage on VCC more than the absolute maximum rating voltage, circuit currents increase

rapidly, and there is absolutely a case to reach characteristic deterioration and destruction of a device. In particular in a

serge examination of a set, when it is expected the impressing serge at VCC terminal (14,24pin), please do not

impress the large and over the absolute maximum rating voltage (including a operating voltage + serge ingredient

(around 14V))

2.About a signal input part

1)In the signal input terminal, the constant setting of input coupling capacitor C(F) be sufficient input impedance

RIN(Ω) inside IC and please decide. The first HPF characteristic of RC is composed.

2) SHORT mode is the command which makes switch SSH =ON an input selector part and input impedance RIN of all

terminals, and makes resistance small. Switch SSH is OFF when not choosing a SHORT command.

A constant time becomes small at the time of this command twisting to the resistance inside the capacitor

connected outside and LSI. The charge time of a capacitor becomes short. Since SHORT mode turns ON the

switch of SSH and makes it low impedance, please use it at the time of a non-signal.

3.About Mute terminal(15pin) when power supply is off

Any voltage shall not be supplied to Mute terminal (15pin) when power-supply is off.

Please insert a resistor (about 2.2kΩ) to Mute terminal in series, if voltage is supplied to mute terminal in case.

(Please refer Application Circuit Diagram.)

4. About Hi-Voltage function

About Logic of Hi-Voltage function is follow as.

Hi-Voltage ON/OFF

Hi-Voltage ON

・Though the level of amplification in the output-unit is controlled with Level Shift (Select Address 01hex, D3), it

becomes a +6dB fixation under the condition of Hi-Voltage function is ON.

・Under the condition of Hi-Voltage function is OFF, 0dB/+3dB switching is possible by the setup of Level Shift.

・Under the condition of Hi-Voltage function is OFF, bias-voltage is 4.15V regardless of the setup of Level Shift.

・The use of the external MUTE on the set side is recommended because shock noise by the DC step is made when

ON/OFF switching of the Hi-Voltage function is done.

・The initial condition of Hi-Voltage function is Hi-Voltage=ON after a power supply is started)

Hivoltage ON/OFF(Select Address 01hex, D2) 0 0 1 1 -

Level Shift(Select Address 01hex, D3) 0 1 0 1 -

Level of amplification in the output-unit 0 3 6 6 [dB]

Bias-voltage in the output-unit 4.15

4.15

6 6 [V]

2

IN)

2

IN

(2πfCR1

)(2πfCR

A(f)

+

=

0

A(f)

G[dB]

F[Hz]

C[F]

RIN

[

Ω

]

INPUT

SSH

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Ordering Information

B

D

3 7 0 3 4 F V ME 2

Part Number

Package

FV: SSOP-B28

Packaging and forming specification

E2: Embossed tape and reel

(SSOP-B28)

Physical Dimension Tape and Reel Information

Marking Diagram(s)(TOP VIEW)

SSOP-B28(TOP VIEW)

BD37034FV

Part Number Marking

LOT Number

1PIN MARK

(Unit : mm)

SSOP-B28

0.1

0.15 ± 0.1

0.1

1.15 ± 0.1

1

0.65

7.6 ± 0.3

5.6 ± 0.2

28

10 ± 0.2

(MAX 10.35 include BURR)

0.3Min.

14

15

0.22 ± 0.1

∗ Order quantity needs to be multiple of the minimum quantity.

Embossed carrier tapeTape

Quantity

Direction

of feed The direction is the 1pin of product is at the upper left when you hold

reel on the left hand and you pull out the tape on the right hand

2000pcs

E2

( )

Direction of feed

Reel 1pin

44/44

Datasheet

BD37034FV-M

TSZ02201

-

0C2C0E100010

-

1

-

2

4.OCT.2013 Rev.002

www.rohm.com

TSZ22111

・

15

・

001

Revision history

Date Revision Changes

3.APR.2013

001 New Release

Date Revision Changes

4.OCT.2013

002 All page

● delete

4.OCT.2013

002 Page 2

< Sub Title>

Sound Processors for Car Audios ⇒ Analog Audio Processors series change.

AEC-Q100 Qualified add.

<Logo>

PbFree, RoHS delete

4.OCT.2013

002 Page 3

Power Dissipation mW ⇒ W change.

4.OCT.2013

002 Page 43

Ordering Information, E2 ⇒ ME2 change.

Datasheet

Notice - SS Rev.002

Notice

Precaution on using ROHM Products

1. If you intend to use our Products in devices requiring extremely high reliability (such as medical equipment (Note 1),

aircraft/spacecraft, nuclear power controllers, etc.) and whose malfunction or failure may cause loss of human life,

bodily injury or serious damage to property (“Specific Applications”), please consult with the ROHM sales

representative in advance. Unless otherwise agreed in writing by ROHM in advance, ROHM shall not be in any way

responsible or liable for any damages, expenses or losses incurred by you or third parties arising from the use of any

ROHM’s Products for Specific Applications.

(Note1) Medical Equipment Classification of the Specific Applications

JAPAN USA EU CHINA

CLASSⅢ CLASSⅢ CLASSⅡb CLASSⅢ

CLASSⅣ CLASSⅢ

2. ROHM designs and manufactures its Products subject to strict quality control system. However, semiconductor

products can fail or malfunction at a certain rate. Please be sure to implement, at your own responsibilities, adequate

safety measures including but not limited to fail-safe design against the physical injury, damage to any property, which

a failure or malfunction of our Products may cause. The following are examples of safety measures:

[a] Installation of protection circuits or other protective devices to improve system safety

[b] Installation of redundant circuits to reduce the impact of single or multiple circuit failure

3. Our Products are not designed under any special or extraordinary environments or conditions, as exemplified below.

Accordingly, ROHM shall not be in any way responsible or liable for any damages, expenses or losses arising from the

use of any ROHM’s Products under any special or extraordinary environments or conditions. If you intend to use our

Products under any special or extraordinary environments or conditions (as exemplified below), your independent

verification and confirmation of product performance, reliability, etc, prior to use, must be necessary:

[a] Use of our Products in any types of liquid, including water, oils, chemicals, and organic solvents

[b] Use of our Products outdoors or in places where the Products are exposed to direct sunlight or dust

[c] Use of our Products in places where the Products are exposed to sea wind or corrosive gases, including Cl2,

H2S, NH3, SO2, and NO2

[d] Use of our Products in places where the Products are exposed to static electricity or electromagnetic waves

[e] Use of our Products in proximity to heat-producing components, plastic cords, or other flammable items

[f] Sealing or coating our Products with resin or other coating materials

[g] Use of our Products without cleaning residue of flux (even if you use no-clean type fluxes, cleaning residue of

flux is recommended); or Washing our Products by using water or water-soluble cleaning agents for cleaning

residue after soldering

[h] Use of the Products in places subject to dew condensation

4. The Products are not subject to radiation-proof design.

5. Please verify and confirm characteristics of the final or mounted products in using the Products.

6. In particular, if a transient load (a large amount of load applied in a short period of time, such as pulse. is applied,

confirmation of performance characteristics after on-board mounting is strongly recommended. Avoid applying power

exceeding normal rated power; exceeding the power rating under steady-state loading condition may negatively affect

product performance and reliability.

7. De-rate Power Dissipation (Pd) depending on Ambient temperature (Ta). When used in sealed area, confirm the actual

ambient temperature.

8. Confirm that operation temperature is within the specified range described in the product specification.

9. ROHM shall not be in any way responsible or liable for failure induced under deviant condition from what is defined in

this document.

Precaution for Mounting / Circuit board design

1. When a highly active halogenous (chlorine, bromine, etc.) flux is used, the residue of flux may negatively affect product

performance and reliability.

2. In principle, the reflow soldering method must be used; if flow soldering method is preferred, please consult with the

ROHM representative in advance.

For details, please refer to ROHM Mounting specification

Datasheet

Notice - SS Rev.002

Precautions Regarding Application Examples and External Circuits

1. If change is made to the constant of an external circuit, please allow a sufficient margin considering variations of the

characteristics of the Products and external components, including transient characteristics, as well as static

characteristics.

2. You agree that application notes, reference designs, and associated data and information contained in this document

are presented only as guidance for Products use. Therefore, in case you use such information, you are solely

responsible for it and you must exercise your own independent verification and judgment in the use of such information

contained in this document. ROHM shall not be in any way responsible or liable for any damages, expenses or losses

incurred by you or third parties arising from the use of such information.

Precaution for Electrostatic

This Product is electrostatic sensitive product, which may be damaged due to electrostatic discharge. Please take proper

caution in your manufacturing process and storage so that voltage exceeding the Products maximum rating will not be

applied to Products. Please take special care under dry condition (e.g. Grounding of human body / equipment / solder iron,

isolation from charged objects, setting of Ionizer, friction prevention and temperature / humidity control).

Precaution for Storage / Transportation

1. Product performance and soldered connections may deteriorate if the Products are stored in the places where:

[a] the Products are exposed to sea winds or corrosive gases, including Cl2, H2S, NH3, SO2, and NO2

[b] the temperature or humidity exceeds those recommended by ROHM

[c] the Products are exposed to direct sunshine or condensation

[d] the Products are exposed to high Electrostatic

2. Even under ROHM recommended storage condition, solderability of products out of recommended storage time period

may be degraded. It is strongly recommended to confirm solderability before using Products of which storage time is

exceeding the recommended storage time period.

3. Store / transport cartons in the correct direction, which is indicated on a carton with a symbol. Otherwise bent leads

may occur due to excessive stress applied when dropping of a carton.

4. Use Products within the specified time after opening a humidity barrier bag. Baking is required before using Products of

which storage time is exceeding the recommended storage time period.

Precaution for Product Label

QR code printed on ROHM Products label is for ROHM’s internal use only.

Precaution for Disposition

When disposing Products please dispose them properly using an authorized industry waste company.

Precaution for Foreign Exchange and Foreign Trade act

Since our Products might fall under controlled goods prescribed by the applicable foreign exchange and foreign trade act,

please consult with ROHM representative in case of export.

Precaution Regarding Intellectual Property Rights

1. All information and data including but not limited to application example contained in this document is for reference

only. ROHM does not warrant that foregoing information or data will not infringe any intellectual property rights or any

other rights of any third party regarding such information or data. ROHM shall not be in any way responsible or liable

for infringement of any intellectual property rights or other damages arising from use of such information or data.:

2. No license, expressly or implied, is granted hereby under any intellectual property rights or other rights of ROHM or any

third parties with respect to the information contained in this document.

Other Precaution

1. This document may not be reprinted or reproduced, in whole or in part, without prior written consent of ROHM.

2. The Products may not be disassembled, converted, modified, reproduced or otherwise changed without prior written

consent of ROHM.

3. In no event shall you use in any way whatsoever the Products and the related technical information contained in the

Products or this document for any military purposes, including but not limited to, the development of mass-destruction

weapons.

4. The proper names of companies or products described in this document are trademarks or registered trademarks of

ROHM, its affiliated companies or third parties.

DatasheetDatasheet

Notice – WE Rev.001

General Precaution

1. Before you use our Pro ducts, you are requested to care fully read this document and fully understand its contents.

ROHM shall n ot be in an y way responsible or liabl e for fa ilure, malfunction or acci dent arising from the use of a ny

ROHM’s Products against warning, caution or note contained in this document.

2. All information contained in this docume nt is current as of the issuing date and subj ect to change without any prior

notice. Before purchasing or using ROHM’s Products, please confirm the la test information with a ROHM sale s

representative.

3. The information contained in this doc ument is provi ded on an “as is” basis and ROHM does not warrant that all

information contained in this document is accurate an d/or error-free. ROHM shall not be in an y way responsible or

liable for an y damages, expenses or losses incurred b y you or third parties resulting from inaccur acy or errors of or

concerning such information.

Datasheet

Part Number bd37034fv-m

Package SSOP-B28

Unit Quantity 2000

Minimum Package Quantity 2000

Packing Type Taping

Constitution Materials List inquiry

RoHS Yes

bd37034fv-m - Web Page

Distribution Inventory

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