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STEVAL-MKI139V3
Microphone coupon board based on the MP23AB02B analog
MEMS microphone
Data brief
Description
The STEVAL-MKI139V3 is a daughterboard
containing 4 MP23AB02B analog MEMS
microphones. The coupon concept allows easy
performance testing of ST MEMS microphones. It
is possible to detach the single PCBs hosting
each microphone.
Features
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4 x MP23AB02B bottom port digital MEMS
microphones
V supply from 1.6 to 3.6 V
120 dBSPL acoustic overload point
Omnidirectional sensitivity
Frequency range: 100 Hz - 10 kHz
64 dB of SNR
THD < 0.5% @ 94 dBSPL, 1 kHz
Sensitivity: -38 dBV
RoHS compliant
February 2015
DocID027501 Rev 1
For further information contact your local STMicroelectronics sales
office
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www.st.com
Schematic diagrams
1
STEVAL-MKI139V3
Schematic diagrams
Figure 1: STEVAL-MKI139V3 coupon schematic diagram
2
VDD
OUT
GND
GND
1
U1
2
MP23AB02
3
OUT
1
1
GND
2
GND
3
VDD
GND
3
J1
J2
C1
C2
1 nF
1 µF
STEVAL-MKI139V3 ANALOG MIC BOARD
GSPG1202151540SG
Figure 2: STEVAL-MKI139V3 example of external electrical connections
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STEVAL-MKI139V3
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Revision history
Revision history
Table 1: Document revision history
Date
Rev
24-Feb-2015
1
DocID027501 Rev 1
Changes
First release.
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STEVAL-MKI139V3
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improvements to ST products and/or to this document at any time without notice. Purchasers should obtain the latest relevant information on ST
products before placing orders. ST products are sold pursuant to ST’s terms and conditions of sale in place at the time of order
acknowledgement.
Purchasers are solely responsible for the choice, selection, and use of ST products and ST assumes no liability for application assistance or the
design of Purchasers’ products.
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Resale of ST products with provisions different from the information set forth herein shall void any warranty granted by ST for such product.
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Information in this document supersedes and replaces information previously supplied in any prior versions of this document.
© 2015 STMicroelectronics – All rights reserved
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