date 05/14/2019
page 1 of 7
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MODEL: DEVKIT-MEMS-001 │ DESCRIPTION: MICROPHONE DEVELOPMENT KIT
FEATURES
• 4 detachable evaluation boards
• 2 digital MEMS, one top port & one bottom port
• 2 analog MEMS, one top port & one bottom port
• plated through hole I/O terminals for multiple testing options
EVAL BOARD circuit technology output acoustic size sensitivity current
port
(mm)
typ
(dB)
typ
(μA)
CMM-2718AB-38308-TR MIC1 MEMS analog bottom 2.75 x 1.85 -38 80
CMM-2718AT-42308-TR MIC2 MEMS analog top 2.75 x 1.85 -42 80
CMM-4030DB-26354-TR MIC3 MEMS digital bottom 4.0 x 3.0 -26 540
CMM-4030DT-26354-TR MIC4 MEMS digital top 4.0 x 3.0 -26 540
OPERATIONAL INSTRUCTIONS
The CUI MEMS microphone evaluation board consists of four independent microphone evaluation circuits. Two of the
microphones provide analog output signals and two of the microphones provide digital output signals. Top and bottom
sound port options are provided for both the analog and the digital output microphones. 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 1.6~3.6 Volts should be connected between the VDD and GND pins of the board to be evaluated.
Please refer to the respective data sheets for proper connections to the remaining signal pins.
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CUI Inc │ MODEL: DEVKIT-MEMS-001 │ DESCRIPTION: MICROPHONE DEVELOPMENT KIT date 05/14/2019 │ page 2 of 7
CIRCUIT DIAGRAMS & BOARD LAYOUTS
Vdd
GND
Out
Vdd
GND
Out
Vdd
GND
Data
Sel
Clock
Vdd
GND
Data
Sel
Clock
C52
1µ
C62
1µ
C82
1µ
C72
1µ
C51
1µ
C61
1µ
Vdd1 Vdd2
Vdd3 Vdd4
Out1 Out2
Out3 Out4
Clock3 Clock4
Sel3 Sel4
CMM-2718AB-38308-TR
MIC1
CMM-4030DB-26354-TR
MIC3
CMM-2718AT-42308-TR
MIC2
CMM-4030DT-26354-TR
MIC4
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CUI Inc │ MODEL: DEVKIT-MEMS-001 │ DESCRIPTION: MICROPHONE DEVELOPMENT KIT date 05/14/2019 │ page 3 of 7
CMM-2718AB-38308-TR
WWW.CUI.COM/PRODUCT/AUDIO/MICROPHONES/MEMS-MICROPHONES/CMM-2718AB-38308-TR
ELECTRICAL
parameter conditions/description min typ max units
directivity omnidirectional
sensitivity (S) at 94 dB SPL, 1 kHz -41 -38 -35 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) 65 dBA
total harmonic distortion (THD) at 94 dB SPL, 1 kHz 0.2 %
acoustic overload point (AOP) at 10% THD, 1 kHz 130 dB SPL
output impedance (Zout) at 1 kHz 300 Ω
Notes: 1. All specications measured at 23±2°C, humidity at 55±20%, unless otherwise noted.
FREQUENCY RESPONSE CURVE
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CUI Inc │ MODEL: DEVKIT-MEMS-001 │ DESCRIPTION: MICROPHONE DEVELOPMENT KIT date 05/14/2019 │ page 4 of 7
CMM-2718AT-42308-TR
WWW.CUI.COM/PRODUCT/AUDIO/MICROPHONES/MEMS-MICROPHONES/CMM-2718AT-42308-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) 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) 60 dBA
total harmonic distortion (THD) at 94 dB SPL, 1 kHz 0.2 %
acoustic overload point (AOP) at 10% THD, 1 kHz 130 dB SPL
output impedance (Zout) at 1 kHz 300 Ω
Notes: 1. All specications measured at 23±2°C, humidity at 55±20%, unless otherwise noted.
FREQUENCY RESPONSE CURVE
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CUI Inc │ MODEL: DEVKIT-MEMS-001 │ DESCRIPTION: MICROPHONE DEVELOPMENT KIT date 05/14/2019 │ page 5 of 7
CMM-4030DB-26354-TR
WWW.CUI.COM/PRODUCT/AUDIO/MICROPHONES/MEMS-MICROPHONES/CMM-4030DB-26354-TR
ELECTRICAL
parameter conditions/description min typ max units
directivity omnidirectional
sensitivity (S) at 94 dB SPL, 1 kHz -29 -26 -23 dB FS
supply voltage (VDD) 1.6 2.0 3.6 V
current consumption (IDD) 0.54 mA
sensitivity reduction VDD = 3.6 ~ 1.6 V -0.5 dB FS
frequency (f) 100 10,000 Hz
signal to noise ratio (S/N) at 94 dB SPL, 1 kHz (A-weighted) 64 dBA
total harmonic distortion (THD) at 94 dB SPL, 1 kHz 0.2 %
acoustic overload point (AOP) at 10% THD, 1 kHz 120 dB SPL
output impedance (Zout) at 1 kHz 300 Ω
power supply rejection (PSR) 100 mVp-p square wave at 217 Hz (A-weighted) -90 dB FS
DIGITAL INTERFACE
parameter conditions/description min typ max units
sleep current (ISLEEP) FCLOCK < 1 kHz 3 4µA
fall-asleep time FCLOCK < 1 kHz 50 µs
wake-up time FCLOCK ≥ 1 MHz 52 ms
short circuit current (ISC)grounded data pin 1 10 mA
output load (CLOAD) 100 pF
data format 1-Bit PDM
clock frequency (FCLOCK) 1.0 2.4 3.2 MHz
clock duty cycle (FDC) 40 60 %
clock rise time (tCR) 10 ns
clock fall time (tCF) 10 ns
logic input/output low (VIOL)IOUT = 1 mA -0.30 0.35xVDD V
logig input/output high (VIOH)IOUT = 1 mA 0.65xVDD VDD+0.3 V
delay time for valid data (tDV)18 60 ns
delay time for high z (tDH) 0 16 ns
Notes: 1. All specications measured at 23±2°C, humidity at 55±20%, VDD = 2.0 V, FCLOCK = 2.4 MHz, unless otherwise noted.
FREQUENCY RESPONSE CURVE
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CUI Inc │ MODEL: DEVKIT-MEMS-001 │ DESCRIPTION: MICROPHONE DEVELOPMENT KIT date 05/14/2019 │ page 6 of 7
CMM-4030DT-26354-TR
WWW.CUI.COM/PRODUCT/AUDIO/MICROPHONES/MEMS-MICROPHONES/CMM-4030DT-26354-TR
ELECTRICAL
parameter conditions/description min typ max units
directivity omnidirectional
sensitivity (S) at 94 dB SPL, 1 kHz -29 -26 -23 dB FS
supply voltage (VDD) 1.6 2.0 3.6 V
current consumption (IDD) 0.54 mA
sensitivity reduction VDD = 3.6 ~ 1.6 V -0.5 dB FS
frequency (f) 100 10,000 Hz
signal to noise ratio (S/N) at 94 dB SPL, 1 kHz (A-weighted) 65 dBA
total harmonic distortion (THD) at 94 dB SPL, 1 kHz 0.2 %
acoustic overload point (AOP) at 10% THD, 1 kHz 120 dB SPL
output impedance (Zout) at 1 kHz 300 Ω
power supply rejection (PSR) 100 mVp-p square wave at 217 Hz (A-weighted) -90 dB FS
DIGITAL INTERFACE
parameter conditions/description min typ max units
sleep current (ISLEEP) FCLOCK < 1 kHz 3 4µA
fall-asleep time FCLOCK < 1 kHz 50 µs
wake-up time FCLOCK ≥ 1 MHz 52 ms
short circuit current (ISC)grounded data pin 1 10 mA
output load (CLOAD) 100 pF
data format 1-Bit PDM
clock frequency (FCLOCK) 1.0 2.4 3.2 MHz
clock duty cycle (FDC) 40 60 %
clock rise time (tCR) 10 ns
clock fall time (tCF) 10 ns
logic input/output low (VIOL)IOUT = 1 mA -0.30 0.35xVDD V
logig input/output high (VIOH)IOUT = 1 mA 0.65xVDD VDD+0.3 V
delay time for valid data (tDV)18 60 ns
delay time for high z (tDH) 0 16 ns
Notes: 1. All specications measured at 23±2°C, humidity at 55±20%, VDD = 2.0 V, FCLOCK = 2.4 MHz, unless otherwise noted.
FREQUENCY RESPONSE CURVE
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CUI Inc │ MODEL: DEVKIT-MEMS-001 │ DESCRIPTION: MICROPHONE DEVELOPMENT KIT date 05/14/2019 │ page 7 of 7
CUI oers a one (1) year limited warranty. Complete warranty information is listed on our website.
CUI reserves the right to make changes to the product at any time without notice. Information provided by CUI is believed to be accurate and reliable. However, no responsibility is
assumed by CUI for its use, nor for any infringements of patents or other rights of third parties which may result from its use.
CUI 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 aect its safety or eectiveness.
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techsupport@cui.com
rev. description date
1.0 initial release 05/14/2019
The revision history provided is for informational purposes only and is believed to be accurate.
REVISION HISTORY
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