AW: OTAs, 2 x CA3080s = 1x LM13700?

[Haible Juergen]

	>Aye, I've got a few circuits from the synth-diy series "The
Mix" has
	>been running since the beginning of the year, and they use
loads of
	>CA3080s all over the place. Is it possible to replace 2 ca3080s
with 1
	>lm13700? (they are the same thing, aren't they?).

Almost. There are some circuits that won't work with the
LM13x00 stuff, like the Electronotes VCAs which need an
individual negative supply pin for each individual OTA.
But that's the only exception I know.

Replacing a 13600 or 13700 with two 3080s also works
*if*
(1) you don't need matched parameters,
(2) you don't need the diodes,
(3) you don't need the buffers.

JH.