STMicroelectronics STEVAL-STWINMA2 Microphone Array Expansion Board

STMicroelectronics STEVAL-STWINMA2 Microphone Array Expansion Board adds advanced sensing capabilities to the STEVAL-STWINKT1B (and STEVAL-STWINKT1) SensorTile Wireless Industrial Node (STWIN) kit. This expansion board connects to the STWIN core system board through a dedicated 12-pin connector. The STEVAL-STWINMA2 expansion board includes four IMP23ABSU low-power, high Signal-to-Noise Ratio (SNR) high-performance, single-ended, analog, and bottom-port MEMS microphones. This expansion board features a 3V to 5.5V input power supply range and onboard audio-grade quad Analog to Digital Converter (ADC). The STEVAL-STWINMA2 industrial analog microphone expansion board also features up to 80kHz ultrasound frequency response and Serial Audio Interface (SAI) digital output. This expansion is ideal for factory automation and sound-sensing applications.

Features

Connects to the STWIN core system board through a 12-pin connector
3V to 5.5V power supply input range
Up to 80kHz ultrasound frequency response
4mm square-shaped differential microphone array
Serial Audio Interface (SAI) digital output

LDK130 300mA low quiescent current very low noise LDO
Onboard audio-grade quad Analog to Digital Converter (ADC)
Four IMP23ABSU high-performance, single-ended, analog, bottom-port MEMS microphones