In the datasheet of AD5162, we can see 2ch, and first channel is shown by A1/W1/B1, but second channel only shows W2 and B2 and none for "A2". There is no pin assigned to "A2" in pin assignment.
How should I think about A terminal for this second channel ? Is it shared with other pins or A1 pin ?
Sorry to this fundamentals, but your helps would be very muchappreciated.
On page 16 of the AD5228 datasheet (Rev A.) there is a brief article on using the AD5228 in an audio amplifier with volume control.
There is also a detailed circuit note that's worth looking at also: http://www.analog.com/static/imported-files/circuit_notes/CN0120.pdf