date 04/02/2020
page 1 of 7
MODEL: DEVKIT-ECM-001 │ DESCRIPTION: MICROPHONE DEVELOPMENT KIT
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FEATURES
• 4 detachable evaluation boards
• 1 analog MEMS that is compatible for ECM drop-in replacement
• 1 noise cancelling, 1 unidirectional, & 1 omnidirectional ECM included
• plated through hole I/O terminals for multiple testing options
EVAL BOARD circuit technology output acoustic size sensitivity current
port dia
(mm)
typ
(dB)
typ
(μA)
CMM-3312AT-44308-TR MIC5 MEMS analog top 3.3 -44 80
CMR-2747PB-A MIC6 ECM analog top 6.0 -47 500
CMC-6015-47P MIC7 ECM analog top 6.0 -47 500
CMC-4013-SMT-TR MIC8 ECM analog top 4.0 -42 500
OPERATIONAL INSTRUCTIONS
The CUI Devices electret condenser microphone (ECM) evaluation board consists of four independent microphone
evaluation circuits. One of the microphones is constructed to be noise cancelling, one is constructed to provide
unidirectional sound capture, one is constructed to provide omnidirectional sound capture and the fourth microphone is an
analog output MEMS microphone with the two pin connections congured in a similar manner to the ECMs. External bypass
capacitors are included on the power supply rails of the evaluation boards and DC blocking capacitors are placed in the
analog output signal paths.
A DC power supply of 2~10 Volts should be connected between the VDD and GND pins for the ECM evaluation circuits.
A DC power supply of 1.6~3.6 Volts should be connected between the VDD and GND pins for the MEMS microphone
evaluation circuit. The recommended operating voltage for all of the evaluation boards is 2 V.
Please refer to the respective data sheets for additional information regarding each of the microphones.
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date 04/02/2020 │ page 2 of 7CUI Devices │ MODEL: DEVKIT-ECM-001 │ DESCRIPTION: MICROPHONE DEVELOPMENT KIT
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CIRCUIT DIAGRAMS & BOARD LAYOUTS
GND
Out
GND
Out
GND
Out
GND
Out
R1
1k
C11
1µ
R2
2.2k
R3
2.2k
R4
2.2k
C21
1µ
C31
1µ
C41
1µ
C12
1µ
C22
1µ
C32
C
C42
C
Out5 Out6
Out7 Out8
Vdd5 Vdd6
Vdd7 Vdd8
CMM3312AT-44308-TR
MIC5
CMR-2747PB-A
MIC6
CMC-6015-47P
MIC7
CMC-4013-SMT-TR
MIC8
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date 04/02/2020 │ page 3 of 7CUI Devices │ MODEL: DEVKIT-ECM-001 │ DESCRIPTION: MICROPHONE DEVELOPMENT KIT
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1001K
0dB
+10dB
Frequency(Hz)
Sensitivity(dB)
10K
+5dB
+15dB
+20dB
-5dB
-10dB
-15dB
-20dB
-25dB
+25dB
200 5002K5K
Frequency Response (0dB=1V/Pa)
CMM-3312AT-44308-TR
WWW.CUIDEVICES.COM/PRODUCT/AUDIO/MICROPHONES/MEMS-MICROPHONES/CMM-3312AT-44308-TR
ELECTRICAL
parameter conditions/description min typ max units
directivity omnidirectional
sensitivity (S) at 94 dB SPL, 1 kHz -47 -44 -41 dB
supply voltage (VDD)1.6 2.0 3.6 V
current consumption (IDSS) VDD = 2.0 V 80 µA
sensitivity reduction VDD = 3.6 ~ 1.6 V -0.5 dB
frequency (f) 100 10,000 Hz
signal to noise ratio (S/N) at 94 dB SPL, 1 kHz (A-weighted) 58 dBA
total harmonic distortion (THD) at 94 dB SPL, 1 kHz 0.2 %
acoustic overload point (AOP) at 10% THD, 1 kHz 105 dB SPL
output impedance (Zout) at 1 kHz 300 Ω
Notes: 1. All specications measured at 23±2°C, humidity at 55±20%, unless otherwise noted.
FREQUENCY RESPONSE CURVE
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date 04/02/2020 │ page 4 of 7CUI Devices │ MODEL: DEVKIT-ECM-001 │ DESCRIPTION: MICROPHONE DEVELOPMENT KIT
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CMR-2747PB-A
WWW.CUIDEVICES.COM/PRODUCT/AUDIO/MICROPHONES/ELECTRET-CONDENSER-MICROPHONES/CMR-2747PB-A
ELECTRICAL
parameter conditions/description min typ max units
directivity noise cancelling
sensitivity (S) at 94 dB SPL, 1 kHz -50 -47 -44 dB
supply voltage (VDD) 2.0 10.0 V
current consumption (IDSS) VDD = 2.0 V 500 µA
sensitivity reduction VDD = 2.0 ~ 1.5 V -3 dB
frequency (f) 100 20,000 Hz
signal to noise ratio (S/N) at 94 dB SPL, 1 kHz (A-weighted) 56 dBA
total harmonic distortion (THD) at 94 dB SPL, 1 kHz 10 %
acoustic overload point (AOP) at 10% THD, 1 kHz 110 dB SPL
output impedance (Zout) at 1 kHz 2,200 Ω
Notes: 1. All specications measured at 23±2°C, humidity at 55±20%, unless otherwise noted.
FREQUENCY RESPONSE CURVE
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date 04/02/2020 │ page 5 of 7CUI Devices │ MODEL: DEVKIT-ECM-001 │ DESCRIPTION: MICROPHONE DEVELOPMENT KIT
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CMC-6015-47P
WWW.CUIDEVICES.COM/PRODUCT/AUDIO/MICROPHONES/ELECTRET-CONDENSER-MICROPHONES/CMC-6015-47P
ELECTRICAL
parameter conditions/description min typ max units
directivity unidirectional
sensitivity (S) at 94 dB SPL, 1 kHz -50 -47 -44 dB
supply voltage (VDD) 2.0 10.0 V
current consumption (IDSS) VDD = 2.0 V 500 µA
sensitivity reduction VDD = 2.0 ~ 1.5 V -3 dB
frequency (f) 100 20,000 Hz
signal to noise ratio (S/N) at 94 dB SPL, 1 kHz (A-weighted) 56 dBA
total harmonic distortion (THD) at 94 dB SPL, 1 kHz 10 %
acoustic overload point (AOP) at 10% THD, 1 kHz 110 dB SPL
output impedance (Zout) at 1 kHz 2,200 Ω
Notes: 1. All specications measured at 23±2°C, humidity at 55±20%, unless otherwise noted.
FREQUENCY RESPONSE CURVE
Additional Resources: Product Page
date 04/02/2020 │ page 6 of 7CUI Devices │ MODEL: DEVKIT-ECM-001 │ DESCRIPTION: MICROPHONE DEVELOPMENT KIT
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CMC-4013-SMT-TR
WWW.CUIDEVICES.COM/PRODUCT/AUDIO/MICROPHONES/ELECTRET-CONDENSER-MICROPHONES/CMC-4013-SMT-TR
ELECTRICAL
parameter conditions/description min typ max units
directivity omnidirectional
sensitivity (S) at 94 dB SPL, 1 kHz -45 -42 -39 dB
supply voltage (VDD) 2.0 10.0 V
current consumption (IDSS) VDD = 2.0 V 500 µA
sensitivity reduction VDD = 2.0 ~ 1.5 V -3 dB
frequency (f) 100 20,000 Hz
signal to noise ratio (S/N) at 94 dB SPL, 1 kHz (A-weighted) 58 dBA
total harmonic distortion (THD) at 94 dB SPL, 1 kHz 10 %
acoustic overload point (AOP) at 10% THD, 1 kHz 118 dB SPL
output impedance (Zout) at 1 kHz 2,200 Ω
Notes: 1. All specications measured at 23±2°C, humidity at 55±20%, unless otherwise noted.
FREQUENCY RESPONSE CURVE
Additional Resources: Product Page
date 04/02/2020 │ page 7 of 7CUI Devices │ MODEL: DEVKIT-ECM-001 │ DESCRIPTION: MICROPHONE DEVELOPMENT KIT
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CUI Devices oers a one (1) year limited warranty. Complete warranty information is listed on our website.
CUI Devices reserves the right to make changes to the product at any time without notice. Information provided by CUI Devices is believed to be accurate and reliable. However, no
responsibility is assumed by CUI Devices for its use, nor for any infringements of patents or other rights of third parties which may result from its use.
CUI Devices products are not authorized or warranted for use as critical components in equipment that requires an extremely high level of reliability. A critical component is any
component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to aect its safety or
eectiveness.
rev. description date
1.0 initial release 05/14/2019
1.01 brand update 04/02/2020
The revision history provided is for informational purposes only and is believed to be accurate.
REVISION HISTORY
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