VCA chips

[Don Tillman]

   From: Martin Czech <martin.czech at intermetall.de>
   Date: Wed, 26 Aug 1998 09:21:12 +0200 (MET DST)

   It seems that all linear control VCAs are gone.

Huh?  The CA3080 and it's buddies (the CA3060, CA3094, CA3280, and
LM13600) are all linear control when you feed them a control current,
or exponential control when you feed them a voltage and add a little
circuitry.

The SSM2024 is linear control with a current and SSM2164 is exponential
control with a voltage or current.  

And those are all in full production.  I think.

   Would it be possible to make a VCA with CA3280 in the following
   manner: 

I think the CA3280 has pretty low feedthrough as it stands.  Is that
the issue?

  -- Don