Posted by Torbjrn Forsman, email@example.com
on May 16, 2002 at 12:39
In the M2M audio application note, a common mode voltage of 1,6 V is specified for the analog audio input.
Does the Nokia 30 provide that bias by itself, so it is ok to have an AC coupled audio path, or must external equipment generate that bias voltage?
In the latter case, may the Nokia 30 suffer damage if the bias voltage is active while the module is switched off?