[sdiy] LM13700 as VC resistor

Pete Hartman pete.hartman at gmail.com
Sun Feb 9 02:48:13 CET 2020

On Sat, Feb 8, 2020 at 7:26 PM Didier Leplae via Synth-diy <
synth-diy at synth-diy.org> wrote:

> René,
> Sorry for my ignorance, but when you say “ Use Iabc to get gm (19.2*Iabc =
> gm), and the rest should be easy.”
> What is “labc”?

Iabc is the control current on the OTA.  You'll see it in the LM13700 and
other OTA datasheets.  "ABC" stands for "Amp Bias Current".

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