DEVKIT-ECM-001 CUI Devices

Additional Resources: Product Page date 04/02/2020 page 1 of 7 MODEL: DEVKIT-ECM-001 DESCRIPTION: MICROPHONE DEVELOPMENT KIT 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 circuit technology output acoustic size sensitivity current EVAL BOARD port dia typ typ (mm) (dB) (A) 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 b ypass 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. cuidevices.comAdditional Resources: Product Page CUI Devices MODEL: DEVKIT-ECM-001 DESCRIPTION: MICROPHONE DEVELOPMENT KIT date 04/02/2020 page 2 of 7 CIRCUIT DIAGRAMS & BOARD LAYOUTS Vdd5 Vdd6 C12 C22 1 1 R1 R2 1k 2.2k C11 C21 Out Out Out5 Out6 1 1 CMM3312AT-44308-TR CMR-2747PB-A GND GND MIC5 MIC6 Vdd7 Vdd8 C32 C42 C C R3 R4 2.2k 2.2k C31 C41 Out Out Out7 Out8 1 1 CMC-6015-47P CMC-4013-SMT-TR GND GND MIC7 MIC8 cuidevices.com