REV. C
Information furnished by Analog Devices is believed to be accurate and
reliable. However, no responsibility is assumed by Analog Devices for its
use, nor for any infringements of patents or other rights of third parties that
may result from its use. No license is granted by implication or otherwise
under any patent or patent rights of Analog Devices.
a
REF02
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781/329-4700 www.analog.com
Fax: 781/326-8703 © Analog Devices, Inc., 2002
5 V Precision Voltage
Reference/Temperature Transducer
SIMPLIFIED SCHEMATIC
FEATURES
5 V Output, ⴞ0.3% Max
Temperature Voltage Output, 2.1 mV/ⴗC
Adjustment Range, ⴞ3% Min
Excellent Temperature Stability, 8.5 ppm/ⴗC Max
Low Noise, 15 ␮V p-p Max
Low Supply Current, 1.4 mA Max
Wide Input Voltage Range, 7 V to 40 V
High Load-Driving Capability, 20 mA
No External Components
Short-Circuit Proof
Epoxy Mini-DIP (P-Suffix)
8-Lead Hermetic DIP (Z-Suffix)
8-Lead SOIC (S-Suffix)
8
7
6
5
1
2
3
4
NC = NO CONNECT*
NC
VIN
TEMP
NC
NC
VOUT
TRIMGND
TOP VIEW
(Not to Scale)
REF02
REF02RC/883 LCC (RC-Suffix)
TOP VIEW
(Not to Scale)
20 191
2
3
18
14
15
16
17
4
5
6
7
8
910111213
NC = NO CONNECT*
NC
V
IN
NC
TEMP
NC
NC
NC
NC
V
OUT
NC
NC
NC
NC
NC
NC
NC
GND
NC
TRIM
NC
REF02
*NC = NO CONNECT. DO NOT CONNECT ANYTHING ON THESE PINS AS
SOME OF THEM ARE RESERVED FOR FACTORY TESTING PURPOSES.
TO-99 (J-Suffix)
7
8
1
4
5
6
3
2
NC
VOUT
TRIM
GROUND
(CASE)
NC
NC
VIN
TEMP
NC = NO CONNECT*
GENERAL DESCRIPTION
The REF02 precision voltage reference provides a stable 5 V
output that can be adjusted over a ±6% range with minimal
effect on temperature stability. Single-supply operation over an
input voltage range of 7 V to 40 V, low current drain of 1 mA,
and excellent temperature stability are achieved with an improved
band gap design. Low cost, low noise, and low power make the
REF02 an excellent choice whenever a stable voltage reference
is required. Applications include D/A and A/D converters,
portable instrumentation, and digital voltmeters. The versatility
of the REF02 is enhanced by its use as a monolithic temperature
transducer. For new designs, please refer to ADR02.
PIN CONFIGURATIONS
C1
R3
R6
R4
R5
R1
Q1
R2
R10
OUTPUT
GROUND
R12 6.1k⍀
TRIM
Q19
R15
INPUT
Q15
Q18
Q16
Q13
Q21
Q17
R13
Q20
Q4 Q3
Q5
Q6
Q9
Q7 Q14
Q12
Q11
Q8
R8 R7 R14
Q10
Q2
R11 2k⍀
R9 18k⍀
4
5
6
1.23V
3
TEMP
2
REV. C
–2–
REF02–SPECIFICATIONS
ELECTRICAL SPECIFICATIONS
REF02A/E REF02/H
Parameter Symbol Conditions Min Typ Max Min Typ Max Unit
Output Voltage V
O
I
L
= 0 mA 4.985 5.000 5.015 4.975 5.000 5.025 V
Output Adjustment Range V
TRIM
R
P
= 10 kW±3±6±3±6%
Output Voltage Noise
1
e
n p-p
0.1 Hz to 10 Hz 10 15 10 15 mV p-p
Line Regulation
2
V
IN
= 8 V to 40 V 0.006 0.010 0.006 0.010 %/V
Load Regulation
2
I
L
= 0 mA to 10 mA 0.005 0.010 0.006 0.010 %/mA
Turn-on Settling Time
1
t
ON
To ±0.1% of final value 5 5 ms
Quiescent Supply Current I
SY
No Load 1.0 1.4 1.0 1.4 mA
Load Current I
L
10 21 10 21 mA
Sink Current
3
I
S
–0.3 –0.5 –0.3 –0.5 mA
Short-Circuit Current I
SC
V
O
= 0 30 30 mA
Temperature Voltage Output
4
V
T
630 630 mV
ELECTRICAL SPECIFICATIONS
REF02A/E REF02/H
Parameter Symbol Conditions Min Typ Max Min Typ Max Unit
Output Voltage Change V
OT
0∞C T
A
70∞C0.02 0.06 0.07 0.17 %
with Temperature
5, 6
–55∞C T
A
+125∞C0.06 0.15 0.18 0.45 %
Output Voltage TCV
O
38.5 10 25
ppm/∞C
Temperature Coefficient
7
Change in V
O
Temperature
Coefficient with Output Rp = 10 kW0.7 0.7 ppm/%
Adjustment
Line Regulation 0∞C T
A
70∞C0.007 0.012 0.007 0.012 %/V
(V
IN
= 8 V to 40 V)
2
–55∞C T
A
+125∞C0.009 0.015 0.009 0.015 %/V
Load Regulation 0∞C T
A
70∞C0.006 0.010 0.007 0.012 %/mA
(I
L
= 0 mA to 8 mA)
2
–55∞C T
A
+125∞C0.007 0.012 0.009 0.015 %/mA
Temperature Voltage Output
Temperature Coefficient
4
TCV
T
2.1 2.1
mV/∞C
NOTES
1
Guaranteed by design.
2
Line and Load Regulation specifications include the effect of self-heating.
3
During sink current test the device meets the output voltage specified.
4
Limit current in or out of Pin 3 to 50 nA and capacitance on Pin 3 to 30 pF.
5
V
OT
is defined as the absolute difference between the maximum output voltage and the minimum output voltage over the specified temperature range expressed as a
percentage of 5 V:
DV
VV
V
OT
MAX MIN
=¥
–
5100
6
V
OT
specification applies trimmed to 5,000 V or untrimmed.
7
TCV
O
is defined as V
OT
divided by the temperature range, i.e.,
TCV
V
C
O
OT
=∞
D
70
Specifications are subject to change without notice.
(@ VIN = 15 V, TA = 25ⴗC, unless otherwise noted.)
(@ VIN = 15 V, –55ⴗC £ TA £ ⴞ125ⴗC for REF02A and REF02, 0ⴗC £ TA £ 70ⴗC for REF02E and
REF02H, IL = 0 mA, unless otherwise noted.)
REV. C –3–
REF02
ELECTRICAL SPECIFICATIONS
REF02C REF02D
Parameter Symbol Conditions Min Typ Max Min Typ Max Unit
Output Voltage V
O
I
L
= 0 mA 4.950 5.000 5.050 4.900 5.000 5.100 V
Output Adjustment Range V
TRIM
R
P
= 10 kW±2.7 ±6.0 ±2.0 ±6.0 %
Output Voltage Noise
1
e
n p-p
0.1 Hz to 10 Hz 12 18 12 mV p-p
Line Regulation
2
V
IN
= 8 V to 40 V 0.009 0.015 0.010 0.04 %/V
Load Regulation
2
I
L
= 0 mA to 8 mA 0.006 0.015 %/mA
I
L
= 0 mA to 4 mA 0.015 0.04 %/mA
Turn-On Settling Time
1
t
ON
To ±0.1% of final value 5 5 ms
Quiescent Supply Current I
SY
No Load 1.0 1.6 1.0 2.0 mA
Load Current I
L
821 821 mA
Sink Current
3
I
S
–0.3 –0.5 –0.3 –0.5 mA
Short-Circuit Current I
SC
V
O
= 0 30 30 mA
Temperature Voltage Output
4
V
T
630 630 mV
ELECTRICAL SPECIFICATIONS
REF02C REF02D
Parameter Symbol Conditions Min Typ Max Min Typ Max Unit
Output Voltage Change V
OT
0.14 0.45 0.49 1.7 %
with Temperature
5, 6
Output Voltage
7
TCV
O
20 65 70 250
ppm∞C
Temperature Coefficient
Change in V
O
Temperature
Coefficient with Output R
P
= 10 kW0.7 0.7
ppm/%
Adjustment
Line Regulation
2
V
IN
= 8 V to 40 V 0.011 0.018 0.012 0.05 %/V
Load Regulation
2
I
L
= 0 mA to 5 mA 0.008 0.018 0.016 0.05 %/mA
Temperature Voltage Output
Temperature Coefficient
4
TCV
T
2.1 2.1
mV/∞C
NOTES
1
Guaranteed by design.
2
Line and Load Regulation specifications include the effect of self-heating.
3
During sink current test the device meets the output voltage specified.
4
Limit current in or out of Pin 3 to 50 nA and capacitance on Pin 3 to 30 pF.
5
V
OT
is defined as the absolute difference between the maximum output voltage
and the minimum output voltage over the specified temperature range expressed
as a percentage of 10 V:
DV
VV
V
OT
MAX MIN
=¥
–
5100
6
V
OT
specification applies trimmed to 5 V or untrimmed.
7
TCV
O
is defined as V
OT
divided by the temperature range, i.e.,
TCV
V
C
O
OT
=∞
D
70
Specifications are subject to change without notice.
(@ VIN = 15 V, IL = 0 mA, 0ⴗC £ TA £ 70ⴗC for REF02CJ, CZ, DP, and –40ⴗC £ TA £ +85ⴗC for
REF02CP and CS, unless otherwise noted.)
(@ VIN = 15 V, TA = 25ⴗC, unless otherwise noted.)
REV. C
REF02
–4–
2
45
6
2. INPUT VOLTAGE (VIN)
4. GROUND
5. TRIM
6. OUTPUT VOLTAGE (VOUT)
DIE SIZE 0.074 ⴛ 0.048 INCH, 3552 SQUARE MILS
(1.88 ⴛ 1.22 MM, 2.29 SQUARE MM)
Figure 1. Dice Characteristics (125
ⴗ
C
Tested Dice Available)
TYPICAL ELECTRICAL CHARACTERISTICS
REF02NT REF02N REF02GT REF02G
Parameter Symbol Conditions Typical Typical Typical Typical Unit
Temp. Voltage Output
2, 3
V
T
630 630 630 630 mV
Temp. Voltage Output
Temperature
Coefficient
2, 3
TCV
T
2.1 2.1 2.1 2.1 mV/∞C
Output Voltage
Temperature
Coefficient TCV
O
10 10 10 10 ppm/∞C
Load Regulation I
L
= 0 mA to 10 mA
I
L
= 0 mA to 8 mA,
NT, GT @ 125∞C0.007 0.005 0.009 0.006 %/mA
Output Voltage
Noise e
n p-p
0.1 Hz to 10 Hz 10 10 10 10 mV p-p
Turn-On Settling To ±0.1% of Final
Time t
ON
Value NT, GT
GT @ 125∞C7.5 5.0 7.5 5.0 ms
Quiescent Current I
SY
No Load, NT,
GT @ 125∞C1.4 1.0 1.4 1.0 mA
Load Current I
L
21 21 21 21 mA
Sink Current I
S
–0.5 –0.5 –0.5 –0.5 mA
Short-Circuit Current I
SC
V
O
= 0 30 3030 30mA
NOTES
1
For 25∞C specifications of REF02NT and REF02GT, see REF02N and REF02G respectively.
2
See AN18 for detailed REF02 thermometer applications information.
3
Limit circuit in or out of Pin 3 to 50 nA and capacitance on Pin 3 to 30 pF.
(@ VIN = 15 V, TA = 25ⴗC, unless otherwise noted.)1
WAFER TEST LIMITS
*
REF02NT REF02N REF02GT REF02G
Parameter Symbol Conditions Limit Limit Limit Limit Unit
Output Voltage V
O
I
L
= 0 4.975 4.985 4.950 4.975 V min
5.025 5.015 5.050 5.025 V max
Output Adjustment
Range V
TRIM
R
P
= 10 kW±3.0 ±3.0 % min
Line Regulation V
IN
= 8 V to 40 V 0.015 0.01 0.015 0.01 %/V max
*Electrical tests are performed at wafer probe to the limits shown. Due to variations in assembly methods and normal yield loss, yield after packaging is not guaranteed
for standard product dice. Consult factory to negotiate specifications based on dice lot qualification through sample lot assembly and testing.
(@ VIN = 15 V, TA = 25ⴗC for REF02N and REF02G devices, TA = 125ⴗC for REF02NT and REF02GT devices,
unless otherwise noted.)
REV. C –5–
REF02
CAUTION
ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily
accumulate on the human body and test equipment and can discharge without detection. Although
the REF02 features proprietary ESD protection circuitry, permanent damage may occur on devices
subjected to high energy electrostatic discharges. Therefore, proper ESD precautions are
recommended to avoid performance degradation or loss of functionality.
WARNING!
ESD SENSITIVE DEVICE
ABSOLUTE MAXIMUM RATINGS
*
Input Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 V
Output Short-Circuit Duration
(to Ground or V
IN
) . . . . . . . . . . . . . . . . . . . . . . . . Indefinite
Storage Temperature Range
J, RC, and Z Packages . . . . . . . . . . . . . . . –65∞C to +150∞C
P Package . . . . . . . . . . . . . . . . . . . . . . . . . –65∞C to +125∞C
Operating Temperature Range
REF02A, REF02, REF02RC . . . . . . . . . . –55∞C to +125∞C
REF02CJ, REF02CZ . . . . . . . . . . . . . . . . . . . . 0∞C to 70∞C
REF02CP, REF02CS, REF02E,
REF02H . . . . . . . . . . . . . . . . . . . . . . . . . –40∞C to +85∞C
Lead Temperature (Soldering, 60 sec) . . . . . . . . . . . . . 300∞C
*Absolute maximum ratings apply to both DICE packaged parts, unless otherwise
noted.
Package Type ␪
JA
*
␪
JC
Unit
TO-99 (J) 170 24 ∞C/W
8-Lead Hermetic DIP (Z) 162 26 ∞C/W
8-Lead Plastic DIP (P) 110 50 ∞C/W
20-Contact LCC (RC, TC) 120 40 ∞C/W
8-Lead SOIC (S) 160 44 ∞C/W
20-Contact PLCC (PC) 80 39 ∞C/W
*
JA
is specified for worst-case mounting conditions, i.e.,
JA
is specified for device
in socket for TO, CERDIP, P-DIP, and LCC packages;
JA
is specified for device
soldered to printed circuit board for SO and PLCC packages.
ORDERING GUIDE
1
T
A
= 25∞CPackage Description Operating
⌬V
OS
Max Cerdip Plastic LCC Temperature
(mV) TO-99 8-Lead 8-Lead 20-Contact Range
±15 REF02AZ
2
MIL
±15 REF02EJ REF02EZ XIND
±25 REF02J
2
REF02Z
2
REF02RC/883 MIL
±25 REF02HJ REF02HZ REF02HP XIND
±50 REF02CJ REF02CZ COM
±50 REF02CP XIND
±50 REF02CS
3
XIND
±100 REF02DP COM
NOTES
1
Burn-in is available on commercial and industrial temperature range parts in Cerdip, plastic DIP, and TO-can packages.
2
For devices processed in total compliance to MIL-STD-883, add 883 after part number. Consult factory for 883 data sheet.
3
For availability and burn-in information on SOIC and PLCC packages, contact your local sales office.
REV. C
REF02
–6–
–Typical Performance Characteristics
FREQUENCY – Hz
10 100 1M1k 10k 100k
OUTPUT NOISE – ␮V p-p
10,000
1,000
10
100
V
IN
= 15V
T
A
= 25 C
TPC 1. Output Wideband Noise vs. Bandwidth (0.1 Hz to
Frequency Indicated)
TIME – sec
PERCENT CHANGE IN OUTPUT VOLTAGE – %
0.035
0
0.030
0.020
0.015
0.010
0.005
0.025
–10 0 6010 20 30 40 50
TA = 25ⴗC, TA = 75ⴗC
VIN = 15V
DEVICE IMMERSED
IN 75ⴗC OIL BATH
INPUT VOLTAGE – V
10 15 3520 30
MAXIMUM LOAD CURRENT – mA
35
30
0
20
15
10
5
25
SHORT CIRCUIT PROTECTION
500mW MAXIMUM
DISSIPATION
TA = 25 C
TPC 4. Maximum Load Current vs. Input Voltage
TEMPERATURE – C
LOAD REG – T/LOAD REG – 25 C
1.4
1.1
0.8
1.3
1.2
1.0
0.9
0.7
0.6
–60 –40 –20 140020406080100 120
VIN = 15V
TPC 5. Normalized Load Regulation (
I
L
= 10 mA) vs.
Temperature
TEMPERATURE – C
LINE REG – T/LOAD REG – 25 C
1.4
1.1
0.8
1.3
1.2
1.0
0.9
0.7
0.6
–60 –40 –20 140020406080100 120
TPC 6. Normalized Line Regulation vs. Temperature
FREQUENCY – Hz
10 100 1M1k 10k 100k
76
66
26
56
46
36
16
0
LINE REGULATION – dB
0.0031
0.0100
1.0000
0.0310
0.1000
0.3100
3.1000
10.000
LINE REGULATION – %/V
VIN = 15V
TA = 25 C
TPC 2. Line Regulation vs. Frequency
TPC 3. Output Change Due to Thermal Shock
REV. C
REF02
–7–
INPUT VOLTAGE – V
LINE REGULATION – %/V
0.03
510 3015 20 25
TA = 25ⴗC
0.02
0.01
0.00
TPC 7. Line Regulation vs. Input Voltage
TEMPERATURE – C
MAXIMUM LOAD CURRENT – mA
30
15
0
25
20
10
5
–60 –40 –20 140020406080100 120
VIN = 15V
TPC 8. Maximum Load Current vs. Temperature
TEMPERATURE – C
QUIESCENT CURRENT – mA
1.3
1.0
0.7
1.2
1.1
0.9
0.8
–60 –40 –20 140020406080100 120
VIN = 15V
TPC 9. Quiescent Current vs. Temperature
REV. C
REF02
–8–
OUTPUT ADJUSTMENT
The REF02 trim terminal can be used to adjust the output
voltage over a 5 V ±300 mV range. This feature allows the sys-
tem designer to trim system errors by setting the reference to a
voltage other than 5 V. Of course, the output can also be set to
exactly 5.000 V, or to 5.12 V for binary applications.
15V
V
IN
GND
TRIM
V
O
REF02
2
6
5
4
OUTPUT
10k⍀
3TEMP
Figure 2. Output Adjustment Circuit
Adjustment of the output does not significantly affect the tem-
perature performance of the device. The temperature coefficient
change is approximately 0.7 ppm/∞C for 100 mV of output
adjustment.
–18V
+18V
V
IN
GND
REF02
4
2
Figure 3. Burn-In Circuit
V
IN
GND
REF02
V
O
TRIM
0.1␮F
5k⍀
10k⍀
10k⍀
+15V
–15V
+15V
+5V
–5V
4
5
6
2
OP02
3TEMP
Figure 4.
±
5 V Reference
REF02
R1
5.6k⍀
2
+5V
4
6
2
V
O
+
+2.5V
R2
5.6k⍀
OP02
–
+
V
REF
3
4
6
7
+V
O
–2.5V
–9V
V
O+
= R
1
R
1
+ R
2
(V
REF
), V
O–
= R
2
R
1
+ R
2
(V
REF
)
Figure 5.
±
2.5 V Reference
R
S
1.5k⍀, ⴞ5% OP02
V
IN
GND
REF02
V
O
TRIM
0.1␮F
R
P
50k⍀
4
5
6
2
V
REF
TEMP 3
*
UP TO 10 FEET OF SHIELDED
4-CONDUCTOR CABLE
R
B1
2
3
7
4
R
BP
V
OUT
+15V
–15V
R
C
R
A
6
Figure 6. Precision Temperature Transducer with
Remote Sensor
Table I. Resistor Values
TCV
OUT
SLOPE(S) 10 mV/∞C100 mV/∞C10 mV/∞F
Temperature –55∞C to –55∞C to –67∞F to
Range +125∞C+125∞C+2.57∞C
Output Voltage –0.55 V to –5.5 V to –0.67 V to
Range +1.25 V +12.5 V*+2.57 V
Zero Scale 0 V @ 0∞C0 V @ 0∞C0 V @ 0∞F
R
A
(±1% resistor) 9.09 kW15 kW7.5 kW
R
B1
(±1% resistor) 1.5 kW1.82 kW1.21 kW
R
BP
(Potentiometer) 200 W500 W200 W
R
C
(±1% resistor) 5.11 kW84.5 kW8.25 kW
*For 125∞C operation, the op amp output must be able to swing to 12.5 V,
increase V
IN
to 18 V from 15 V if this is a problem.
TEMPERATURE – ⴗC
TEMP VOLTAGE OUTPUT – mA
880
–60 –40 –20 140020406080100 120
VIN = 15V
830
780
730
680
630
580
530
480
430
Figure 7. Typical Temperature Voltage Output vs.
Temperature (REF02A)
REV. C
REF02
–9–
NOTES
1.
2.
3.
REF02 SHOULD BE THERMALLY CONNECTED
TO SUBSTANCE BEING HEATED.
NUMBERS IN PARENTHESES ARE FOR A
SETPOINT TEMPERATURE OF 60 ⴗC.
R3 = R1 R2 R6
HEATING
ELEMENT
(SEE NOTE 1)
VIN
GND
REF02
VO
4
6
2
T3
R1
(9.2k⍀)
CMP02
2
3
8
4
R6
1
7
R7
27k⍀
R2
1.5k⍀
R4
2.7k⍀
R5
2.2k⍀
V+ (12V TO 32V)
R3
1.3k⍀
V+
V–
–
+
Figure 8. Temperature Controller
REFERENCE STACK WITH EXCELLENT LINE
REGULATION
Two REF01s and one REF02 can be stacked to yield 5.000 V,
15.000 V, and 25.000 V outputs. An additional advantage is
near-perfect line regulation of the 5.0 V and 15.0 V output. A
27 V to 55 V input change produces an output change that is
less than the
noise voltage of the devices. A load bypass resistor
(RB) provides a path for the supply current (I
SY
) of the 15.000 V
regulator.
In general, any number of REF01s and REF02s can be stacked
this way. For example, 10 devices will yield 10 outputs in 5 V or
10 V steps.
The line voltage can change from 100 V to 130 V.
However, care must be taken to ensure that the total load currents
do not exceed the maximum usable current (typically 21 mA).
VIN
GND
REF02
VO
VIN
GND
REF02
VO
VIN
GND
REF02
VO
TRIM
TRIM
10k⍀
10k⍀
RB
6.8k⍀
10k⍀
2
6
5
4
2
6
5
4
2
6
5
4
15.000V
10.000V
5.000V
27V TO 55V
TRIM
Figure 9. Reference Stack
PRECISION CURRENT SOURCE
A current source with 35 V output compliance and excellent
output impedance can be obtained using this circuit. REF02
keeps the line voltage and power dissipation constant in device;
the only important error consideration at room temperature is
the negative supply rejection of the op amp. The typical 3 mV/V
PSRR of the OP02E will create an 20 ppm change (3 mV/V
35 V/5 V) in output current over a 25 V range. For example, a
5 mA current source can be built (R = 1 kW) with 350 MW
output impedance.
V
IN
GND
REF02
V
O
2
6
4
V
IN
GND
REF02
V
O
2
6
4
C
R
(TRIM FOR
CALIBRATION)
C
R
OP02E
2
3
–5V
4
6
7
I
O
= 5V
R
V
O
= 0V TO 35V
50V
R
O
=
35V
20
ⴛ
10
–6
ⴛ
5mA
Figure 10. Precision Current Source
V
IN
GND
TRIM
V
O
REF02
15V
2
6
5
4
R
VOLTAGE COMPLIANCE: –25V TO +8V
I
OUT
I
OUT
= + + 1mA
5V
R
3TEMP
Figure 11. Current Source
VIN
GND
TRIM
VO
REF02
IOUT
2
6
5
4
R
VOLTAGE COMPLIANCE: –8V TO +25V
IOUT = + + 1mA
5V
R
–15V
3TEMP
Figure 12. Current Sink
REV. C
REF02
–10–
REF02
DAC08 OP02
0.1
␮F
+15V
4
6
5
5k⍀
5.0k⍀
5.0k⍀
5.0k⍀
+15V –15V –15V
+15V
E
O
LSB
MSB
2B1 B2 B3 B4 B5 B6 B7 B8
V+ V– C
C
V
LC
I
O
2
4
l
O
V
IN
V
O
GND
Figure 13. D/A Converter Reference
VIN
GND
REF02HJ
VO
2
6
4
R1
20k⍀
R2
13.3k⍀
A1
VO(+) = +3.0V
–7.5V
+7.5V
A2
–7.5V
–7.5V (ⴞ10%)
VO(–) = –3.0V
R3
1.0k⍀
R4
2.0k⍀
1/2 OP04CK
+7.5V (ⴞ10%)
1/2 OP04CK
Figure 14.
ⴞ
3 V Reference
SUPPLY BYPASSING
For best results, it is recommended that the power supply pin be
bypassed with a 0.1 mF disc ceramic capacitor.
REV. C
REF02
–11–
OUTLINE DIMENSIONS
8-Lead Ceramic DIP-Glass Hermetic Seal [CERDIP]
(Q-8)
Dimensions shown in inches and (millimeters)
14
85
0.310 (7.87)
0.220 (5.59)
PIN 1
0.005 (0.13)
MIN
0.055 (1.40)
MAX
0.100 (2.54) BSC
15
0
0.320 (8.13)
0.290 (7.37)
0.015 (0.38)
0.008 (0.20)
SEATING
PLANE
0.200 (5.08)
MAX
0.405 (10.29) MAX
0.150 (3.81)
MIN
0.200 (5.08)
0.125 (3.18)
0.023 (0.58)
0.014 (0.36)
0.070 (1.78)
0.030 (0.76)
0.060 (1.52)
0.015 (0.38)
CONTROLLING DIMENSIONS ARE IN INCHES; MILLIMETERS DIMENSIONS
(IN PARENTHESES) ARE ROUNDED-OFF INCH EQUIVALENTS FOR
REFERENCE ONLY AND ARE NOT APPROPRIATE FOR USE IN DESIGN
8-Lead Metal Can [TO-99]
(H-08)
Dimensions shown in inches and (millimeters)
0.2500 (6.35) MIN
0.5000 (12.70)
MIN
0.1850 (4.70)
0.1650 (4.19)
REFERENCE PLANE
0.0500 (1.27) MAX
0.0190 (0.48)
0.0160 (0.41)
0.0210 (0.53)
0.0160 (0.41)
0.0400 (1.02)
0.0100 (0.25)
0.0400 (1.02) MAX
BASE & SEATING PLANE
0.0340 (0.86)
0.0280 (0.71)
0.0450 (1.14)
0.0270 (0.69)
0.1600 (4.06)
0.1400 (3.56)
0.1000 (2.54) BSC
6
28
7
5
4
3
1
0.2000
(5.08)
BSC
0.1000
(2.54)
BSC
45 BSC
0.3700 (9.40)
0.3350 (8.51)
0.3350 (8.51)
0.3050 (7.75)
CONTROLLING DIMENSIONS ARE IN INCHES; MILLIMETERS DIMENSIONS
(IN PARENTHESES) ARE ROUNDED-OFF INCH EQUIVALENTS FOR
REFERENCE ONLY AND ARE NOT APPROPRIATE FOR USE IN DESIGN
COMPLIANT TO JEDEC STANDARDS MO-002AK
8-Lead Plastic Dual-in-Line Package [PDIP]
(N-8)
Dimensions shown in inches and (millimeters)
SEATING
PLANE
0.015
(0.38)
MIN
0.180
(4.57)
MAX
0.150 (3.81)
0.130 (3.30)
0.110 (2.79) 0.060 (1.52)
0.050 (1.27)
0.045 (1.14)
8
14
5
0.295 (7.49)
0.285 (7.24)
0.275 (6.98)
0.100 (2.54)
BSC
0.375 (9.53)
0.365 (9.27)
0.355 (9.02)
0.150 (3.81)
0.135 (3.43)
0.120 (3.05)
0.015 (0.38)
0.010 (0.25)
0.008 (0.20)
0.325 (8.26)
0.310 (7.87)
0.300 (7.62)
0.022 (0.56)
0.018 (0.46)
0.014 (0.36)
CONTROLLING DIMENSIONS ARE IN INCHES; MILLIMETER DIMENSIONS
(IN PARENTHESES) ARE ROUNDED-OFF INCH EQUIVALENTS FOR
REFERENCE ONLY AND ARE NOT APPROPRIATE FOR USE IN DESIGN
COMPLIANT TO JEDEC STANDARDS MO-095AA
20-Terminal Ceramic Leaded Chip Carrier [LCC]
(E-20A)
Dimensions shown in millimeters and (inches)
1
20 4
9
8
13
19
14
3
18
BOTTOM
VIEW
0.71 (0.0278)
0.56 (0.0220)
45 TYP
0.38 (0.0150)
MIN
1.40 (0.0551)
1.14 (0.0449)
1.27 (0.0500)
BSC
1.91 (0.0752)
REF
0.28 (0.0110)
0.18 (0.0071)
R TYP
2.41 (0.0949)
1.90 (0.0748)
2.54 (0.1000) BSC
5.08 (0.2000)
BSC
3.81 (0.1500)
BSC
1.91
(0.0752)
REF
9.09 (0.3579)
8.69 (0.3421)
SQ
9.09
(0.3579)
MAX
SQ
2.54 (0.1000)
1.63 (0.0642)
2.24 (0.0882)
1.37 (0.0539)
REV. C
–12–
C00375–0–10/02(C)
PRINTED IN U.S.A.
REF02
Revision History
Location Page
10/02—Data Sheet changed from REV. B to REV. C.
Changes to FEATURES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Changes GENERAL DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Changes SIMPLIFIED SCHEMATIC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Changes SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Changes ABSOLUTE MAXIMUM RATINGS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Changes Package Type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Changes ORDERING GUIDE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Updated OUTLINE DIMENSIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11