STEVAL-MKI139V4

STEVAL-MKI139V4 Microphone coupon board based on the MP23AB01DM analog MEMS microphone Data brief Description The STEVAL-MKI139V4 board contains four MP23AB01DM analog MEMS microphones. The coupon design allows easy performance testing of STM MEMS microphones, with the possibility of detaching the single PCBs hosting each microphone. Features           4xMP23AB01DM bottom port analog MEMS microphones Vsupply from 2.3 to 3.6 V 135 dBSPL acoustic overload point Omnidirectional sensitivity Frequency range 100 Hz - 10 kHz 65 dB of SNR Sensitivity -38 dBFV ±1 dBV THD < 0.5% @ 94 dBSPL, 1 kHz THD < 4% @ 130 dBSPL, 1 kHz RoHS compliant May 2017 DocID030364 Rev 2 For further information contact your local STMicroelectronics sales office 1/4 www.st.com Schematic diagrams 1 STEVAL-MKI139V4 Schematic diagrams Figure 1: STEVAL-MKI139V4 coupon circuit schematic OUT+ VDD U1 VDD C2 1µF 1 OUT- 2 VDD GND OUT- OUT+ 4 3 OUT+ GND1 OUT- C1 100nF C3 270pF MP23A B01DM GND1 J1 OUTOUT+ 4 5 6 4 5 6 3 2 1 3 2 1 VDD CON6 GND1 GND1 Figure 2: STEVAL-MKI139V4 example of external electrical connections 2/4 DocID030364 Rev 2 STEVAL-MKI139V4 2 Revision history Revision history Table 1: Document revision history Date Version Changes 21-Feb-2017 1 Initial release. 11-May-2017 2 Updated: title, features and description on the cover page. DocID030364 Rev 2 3/4 STEVAL-MKI139V4 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. © 2017 STMicroelectronics – All rights reserved 4/4 DocID030364 Rev 2