dual op amp in step

[Stretto]

Is it possible to define a relatively simple op amp circuit to replace a
dual pot and dual op amp into a single pot and dual or possibly quad op amp?
Basically the two op amps have gains dependent on the same pot. Cheaper to
have a single pot than a dual one.

Somehow I would like to set the gain of several op amps to match that of the
main one(which is variable).

 

[Martin Riddle]

Not with just OpAmps, but check out...

http://www.national.com/analog/amplifiers/variable_gain_amplifiers

There used to be a company called THAT, but I can't locate it at the
moment.

...Jim Thompson

Still there... <http://www.thatcorp.com/THAT_IC_Selection_Guide.shtml>

Cheers