piclist 2005\08\10\075005a >
Thread: Floating Analog Signal in
picon face BY : Gerhard Fiedler email (remove spam text)

Phil Keller wrote:

> The peak detector is what I described, without knowing what it was
> called.  It is sufficient for what I need.  (This is not precision, just
> an indication of relative volume level.)  My problem is before that.  I
> need to be able to translate an audio signal that is referenced to audio
> ground to a signal with its reference to digital ground without
> connecting the grounds together.

Why do you not want to (or why can't you) connect e.g. a PIC's ground to
the analog reference ground? Depending on what you want to achieve, the
ways to do it will be different.

<avllaz1rawjp.1v8alhiwypi6m.dlg@40tude.net> 7bit

In reply to: <42F93195.2050304@PKeller.net>
See also: www.piclist.com/techref/io/atod.htm?key=analog
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