VCA chips (2)

[Martin Czech]

> Yeah, the CA3280 was designed to be a superior CA3080.  Linearizing
> diodes to compensate for the diffamp transfer curve and low noise (the
> 3080 doesn't actually have a noise spec).  The LM13600 (National
> Semiconductor) is basically the same thing but with an emitter
> follower stage you can choose to use or not.

I think the 3280 claims matched gm.
There is a chip photo which makes this resonable.
Does the 13700 also ? I don't know.
By the way, what's the difference 13600 13700?
Better output darlington? I think for new designs 13700 is recommended.

m.c.