[sdiy] interesting expo design

[René Schmitz]

At 16:46 06.05.02 -0700, Tim Ressel wrote:
>I was thinking a AD633 multiplier from Analog Devices
>would do the trick. Turns out it will, but its
>accuracy is only 2% of full scale. Good enough for a
>filter maybe, but not for a vco.

Hmm, I think this could work if you use the multiplyer just for 
modulation inputs, and derrive the main pitch voltage from the 
DAC (or a keyboard), using the temperature reference as 
outlined in the article. The AD633 is probably way more accurate 
than the temperature compensation amp I once proposed.

Cheers,
  René
-- 
uzs159 at uni-bonn.de
http://www.uni-bonn.de/~uzs159