Simple USB audio interface for headset
- Based on PCM2912A reference design; single IC providing:
- 2-channel DAC and headphone amplifier
- 1-channel ADC and microphone bias
- TRRS jack for headset, or headphones and microphone can be wired out separately
- CTIA or OMTP type jack can be selected with jumper link
- Not for higher end audio but perfectly adequate for gaming, podcasts, calls, etc.