STEVAL-MKI139V5 STMicroelectronics

STEVAL-MKI139V5 Data brief Microphone coupon board based on the MP23AB01DH fully differential analog MEMS microphone Features 4 x MP23AB01DH 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 < 0.2% 94 dBSPL, 1 kHz THD < 5% 130 dBSPL, 1 kHz RoHS compliant Description The STEVAL-MKI139V5 daughterboard contains four MP23AB01DH analog MEMS microphones. The coupon concept facilitates performance testing of ST MEMS microphones. It is possible to detach the single PCBs hosting each microphone. Product summary High-performance MEMS microphone, fully differential analog bottom-port, MP23AB01DH omnidirectional, high SNR, compact and low- power MEMS audio sensor DB3252 - Rev 2 - May 2018 www.st.com For further information contact your local STMicroelectronics sales office.STEVAL-MKI139V5 Schematic diagrams 1 Schematic diagrams Figure 1. STEVAL-MKI139V5 coupon circuit schematic VDD U1 VDD 1 4 VDD GND C3 C1 C2 OUT- 2 3 OUT+ 270pF 100nF 1F OUT- OUT+ GND1 MP23A B01DH GND1 J1 OUT- 4 3 4 3 5 2 5 2 OUT+ 6 1 6 1 VDD CON6 GND1 GND1 Figure 2. STEVAL-MKI139V5 example of external electrical connections DB3252 - Rev 2 page 2/4 OUT- OUT+