RE: nrf5340 Bluetooth speakers and mic

Karl Ylvisaker — Mon, 27 Jun 2022 15:47:08 GMT

Hello,

Thank you for your patience with this.

[quote user=""]Is CS47L35 necessary to use?[/quote]

The answer to your question depends on how you intend to input and output the audio to and from the nRF5340.
The CS47L35 is only used as an ADC/DAC on the Audio DK, so whether you need it or not will depend on what your microphone outputs and what your speaker requires as input.

[quote user=""]Any schematics that can help us?[/quote]

You can see the Audio DKs hardware files here.

[quote user=""]Any recommendations with mic and speaker selection?[/quote]

We do not have any official microphone or speaker recommendations, since it will depend heavily on your use-case requirements.
Additionally, as long as they are compatible input/output wise it will not matter from the nRF5340's point of view.

Best regards,
Karl