STEVAL-MKI139V3 STMicroelectronics

S T E VA L - M K I 1 3 9 V 3 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 1/4 www.st.com For further information contact your local STMicroelectronics sales office Schematic diagrams STEVAL-MKI139V3 1 Schematic diagrams Figure 1: STEVAL-MKI139V3 coupon schematic diagram 2 VDD 1 1 U1 1 OUT OUT GND MP23AB02 2 2 GND GND GND 3 3 3 VDD GND J2 J1 C1 C2 1 nF 1 F STEVAL-MKI139V3 ANALOG MIC BOARD GSPG1202151540SG Figure 2: STEVAL-MKI139V3 example of external electrical connections 2/4 DocID027501 Rev 1