I am looking for a way to output a very high resolution voltage from a
microcontroller.  I need about 24 bits of resolution.  From what I've
seen, the only widely available 24 bit DACs are audio DACs.  Has anybody
used an audio DAC in a non-audio application?

One idea I had was to somehow cascade lower resolution DACs in series.
i.e. use the output of one as the ground for the next and then scale the
final DAC's output for my needs.  This would require lots of
opto-isolation, isolation transformers, and generally sounds like a bad
idea to me.

Does any body have any other ideas?  Is there anything about an audio
DAC that would make it not suitable for use in high accuracy testing
equipment?

Thanks,
Eric Christensen

--
http://www.piclist.com#nomail Going offline? Don't AutoReply us!
email listserv@mitvma.mit.edu with SET PICList DIGEST in the body