[sdiy] SSM2164 VCA

[Stewart Pye]

Hi,

I've been looking at 2164 linear VCA designs like this...
http://www.sdiy.org/philgallo/mgbvca.html

All the designs I've seen based on the Mike Irwin design change Vref to 
whatever they want the CV range to be. Is there a reason why you 
couldn't just use -15V and scale the resistor connected to Vref to suit? 
Wouldn't the 2164 just be seeing a current input, and not care what 
voltage is on the other end of the resistor?

Regards,
Stewart.