Digital controlled filter.

[KA4HJH]

>Maxim (and others) makes serial controlled DACs which would make a nice
>front end for control of any curtis chip you'd like.  This is a 2 chip
>solution not counting the glue.  In fact serial controlled DACs seem to be
>the norm for new designs.

They have free samples of some pretty pricey chips. I managed to wheedle
enough DAC's out of them for the entire project. I don't know exactly I
could even buy some of these in singles.

Which reminds me I need a couple more...

Terry Bowman, KA4HJH
"The Mac Doctor"