Hi,
I have a question about the circuit of the ReSpeaker 4-Mic Array (v1.2).
The schematic for ReSpeaker 4-Mic Array (v1.0) is published at the link below, but the microphone elements on the v1.2 I own are different. The v1.0 uses SPU0414HR5H-SB, whereas my board’s mics are MSM321A3729H9BP.
ReSpeaker 4-Mic Array for Raspberry Pi v1.0.sch
What I’d like to know is the actual circuit for v1.2. Aside from the mic element itself, is the v1.2 circuit identical to the v1.0 schematic? Or have the surrounding components been revised to match the new element?
If anyone has this information, please let me know.
P.S. It seems the MSM321A3729H9BP is now EOL, and MSM381AKT003 is being used instead.
BR,