[sdiy] CMOS Switch as VCA?

[Magnus Danielson]

Scott Nordlund wrote:
> The 4016 isn't buffered though, that's primarily the one I was thinking about.  The only thing I had in my mind about the 4066 was its lower on resistance, but yeah, it is buffered so never mind.  The 4016 does have an inverter to drive the P-MOSFET so I would expect some nonlinearity due to that.  I'm not hoping for anything approaching hi-fi, but I think the idea would be useful in some way even if it only barely works.

Um... while this most probably doesn't work as drawn, it would be fun to 
get it working. Notice how the three 4069UB is used in three entirely 
different ways:
http://rubidium.dyndns.org/~magnus/synths/schematics/4069-CVADSR.pdf

The CV-ADSR aspect was accidental, I was only attempting an ADSR design.

This is one of those rise from the bed and turn the computer on ideas.

Cheers,
Magnus