the following schematic is for processing signals from/to different audio sources.
It uses a couple of ADG888 for the audio switching function, and a simple debouncer (MAX6816) to have a better control.
The question: is it better to keep the audio ground line separated from the main power supply GND ? Or is it mandatory?
Thank you for your idea!
The ADG4613 can be configured as a Dual SPDT by tying the IN1 and IN2 pins to the same digital input. Tying D1 and D2 together will then allow you to have the output of D1+D2 = S1 or S2.
Similarly, you can do the same for IN3, IN4 and D3, D4.