Hello, I am requesting a schematic review of my bluetooth microphone system. I've used the spec sheets as well as audio DK hardware reference material to design these schematics.
System Description:
- Two devices: (1) battery powered microphone and (2) USB powered receiver
- Signal is aquired by two DMICs, processed at the ADI codec, and sent to the nRF5340 via I2S
- nRF5340 pairs and transmits audio via BLE Audio to a second nRF5340 on the receiver
- Receiver nRF5340 outputs signal as USB audio class
- User has a multi-function button for power on and pairing
- Both devices have LEDs to provide power, pairing, and error state feedback
I specifically need feedback on my implementation of the two Nordic products: nRF5340 and nPM1100. Any and all criticism is welcome. I still have much to learn about Nordic products. Thank you very much!
