2020-05-11 06:16 AM
2020-05-12 02:28 AM
Analog the ADC converter and of course an ST OpAmp as example - TS922EIJT. The digital MEMS MIC is using PDM signal which can be handled by SPI/I2S bus or through Digital filter for sigma delta modulators (DFSDM) available at some STM32 MCUs, such as STM32L4 series, as example. Please check STWIN schematic as reference
https://www.st.com/resource/en/schematic_pack/steval-stwinkt1_schematic.pdf
For SW side, please check details about X-CUBE-MEMSMIC1 SW package