How should unused pins be handled on audio codecs?

In the case of the AD193x family, any unused ADC analog input ports should be connected directly to the CM pin, along with the recommended decoupling capacitors. If an ADC port is being driven with a single-ended source, the unused pin of the differential input should be AC coupled to ground with a 10 uF capacitor.

In the case of the AD193x family, any unused ADC analog input ports should be connected directly to the CM pin, along with the recommended decoupling capacitors. If an ADC port is being driven with a single-ended source, the unused pin of the differential input should be AC coupled to ground with a 10 uF capacitor.