[sdiy] High pitched noise on codec problem

julian schmidt elfenjunge at gmx.net
Thu Dec 5 19:59:21 CET 2013


Am 05.12.2013 19:12, schrieb Eric Brombaugh:
>
> Also - it's probably not a good idea to ground the unused input - it 
> expects to be biased at ~AVDD/2, so grounding looks like a fullscale 
> negative input which might do odd things to the input circuits.
>
on a 2nd thought... shouldn't any DC voltage be blocked by the cap after 
the opamp anyways?

julian




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