Q:
I have observed a considerable DC-offset of the digital audio input data. Does the MAX98090 offer a function to remove this offset?
A:
The DC offset for digital mics is common; should be much less for the onboard ADCs. Either way, there is an optional DC blocking filter. This can be accessed in the GUI by clicking on the “Filtering” box in the record path and checking “ADC DC Blocking Filter Enable”. The enable bit for this is called AHPF, bit 6 of register 0x26.