AD8137 circuit discussion

Hi ,

I use AD8137 as differential audio signal driver, see the schematic below.

I have two questions need your help to clarify:

1. Does AD8137 need DC bias on +IN and -IN ? There are two DC block capacitors (C1 and C2) in front of +IN and -IN of AD8137.

    The capacitors will block DC bias from Line_out +/Line_out- of Audio codec, Is it okay for AD8137 design  ?

2. Vcom set 2.5V, does it mean Out+/Out- of AD8137 have 2.5V DC offset ?

Thanks!

TChin



VS+=5V
[edited by: TChin at 10:54 AM (GMT -4) on 20 Aug 2021]