Hi Hardy,
I believe this should work, but there will be some challenges operating from an 8V supply. If your device consumes 3mA of quiescent current (1.8mA of Iq for OPA1641, plus 500uA microphone Iq, plus 700uA of overhead), the available supply drops…
Other Parts Discussed in Thread: TIPD181 Does Ti have solution for conference speaker and microphone in large conference room? the room size is about 7*10 sq meters
Thanks
Part Number: OPA1656
How do I design Low Noise & Low Distortion Headphone & Small Signal Audio Amplifiers?
Headphone Amplifiers
On-Chip Thin Film Resistors Enable High-Performance Audio Circuitry – SBOA312
Stabilizing Difference Amplifiers…
Other Parts Discussed in Thread: LM833 How do I design Low Noise & Low Distortion Headphone & Small Signal Audio Amplifiers?
Headphone Amplifiers
On-Chip Thin Film Resistors Enable High-Performance Audio Circuitry – SBOA312
Stabilizing Difference…