[sdiy] exponential converters

[Tim Parkhurst]

Hmmm... so far as I know, there isn't a commercially available one chip
solution. There are chips with exponential VCOs on them (the CEM 3374 and
3340; not currently in production but still available from Synthtech.com).
You could also look at some of the many VCO schematics on SDIY member sites,
but as I recall, none of these has a one chip solution for exponential
conversion. Still, the circuitry there might help you cook up your own
converter circuit. Here are a few links:

http://home.earthlink.net/~ijfritz/sy_circ.htm

http://www.musicfromouterspace.com/analogsynth.php?page=ANALOG

http://www.ori.org/~aaronc/synth/

http://www.uni-bonn.de/~uzs159/



Tim (cooked up) Servo
"Imagination is more important than knowledge." - Albert Einstein




> -----Original Message-----
> From: Guillaume Fairfield [mailto:gfairfield at rogers.com]
> Sent: Thursday, March 18, 2004 5:24 PM
> To: synth-diy at dropmix.xs4all.nl
> Subject: [sdiy] exponential converters
> 
> Hello all,
> 
> I'm looking for an IC that performs an exponential conversion of a
> voltage to a current...you know, the 1v/OCT thing.
> Preferably something that is still in production.
> Anything helps though.
> 
> Thanks
> 
> Guillaume
> 
> 
> 
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