Introduction
The
expansion board allows synchronized acquisition and streaming of up to 4 microphones at a
maximum sampling rate of 192 KHz.
It represents a quick and easy solution to develop microphone-based applications and start implementing audio algorithms.
The expansion board is designed around the
analog MEMS microphone and is compatible with the ST morpho
connector layout and with analog microphone coupon boards (e.g.,
The
microphones: two connected to an external ADC and one directly routed
to the STM32 embedded ADC.
The analog amplification stage is achieved thanks to ST TSV91x wide bandwidth operational amplifiers.
Figure 1.
X-NUCLEO-AMICAM1 expansion board
Getting started with the X-NUCLEO-AMICAM1 analog MEMS microphone
expansion board based on MP23ABS1 for STM32 Nucleo
UM2649
User manual
UM2649
-
Rev 2
-
March 2020
For further information contact your local STMicroelectronics sales office.
www.st.com
