date 04/02/2020

page 1 of 7

MODEL: DEVKIT-ECM-001

│ DESCRIPTION: MICROPHONE DEVELOPMENT KIT

cuidevices.com

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 configured 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.

Additional Resources: Product Page