[sdiy] matrix ICs

[Paul R. Higgins]

I was wondering if any DIYers have experience with the various crosspoint matrix
ICs.  I'm most familiar with the ones made by Mitel, although I know that AD 
also makes them, as does Intersil.  I also recall that someone (Harris?) makes 
an 8 x 8 matrix as part of their HC/HCT line.

My main interest in these ICs is, of course, audio applications (not necessarily
of an exclusively synth nature).  I could see an application for CV matrices as 
well if they were sufficiently linear.

The most recent matrix IC I found was on the Intersil website; here's the 
datasheet URL for those who want to take a look:

http://www.intersil.com/Data/FN/FN4/FN4153/FN4153.pdf

This is an 8 x 8 "video crosspoint switch", the HA456.  I haven't had a close 
enough look myself to tell whether it is suitable for audio.

If anyone has built anything with these devices, I'd love to hear about it!

Thanks,
-PRH

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Paul Higgins
email: higg0008 at tc.umn.edu
University of Minnesota
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