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 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 1/4 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 2/4 DocID027501 Rev 1 STEVAL-MKI139V3 2 Revision history Revision history Table 1: Document revision history Date Rev 24-Feb-2015 1 DocID027501 Rev 1 Changes First release. 3/4 STEVAL-MKI139V3 IMPORTANT NOTICE – PLEASE READ CAREFULLY STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, enhancements, modifications, and 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. No license, express or implied, to any intellectual property right is granted by ST herein. Resale of ST products with provisions different from the information set forth herein shall void any warranty granted by ST for such product. ST and the ST logo are trademarks of ST. All other product or service names are the property of their respective owners. Information in this document supersedes and replaces information previously supplied in any prior versions of this document. © 2015 STMicroelectronics – All rights reserved 4/4 DocID027501 Rev 1