Hi Coleman,
I am having issues with the ADAU1701 which I suspect is due to latency, I'm implementing an Active Noise Reduction system for a headphone with the DSP to compensate for the speaker's amplitude and phase shifts and so even a 1ms latency is causing a headache. Correct me if I'm wrong, but the ADAU1772 would practically behave as an analog filter since its latency is so low at 38us? If I have to change to the ADAU1772 so late in this project, it pretty much means a redesign since the ADAU1701 and ADAU1772 are not pin compatible, is there any advise on this application you can give me please before I change anything?
Kind regards
Charles