[sdiy] linearize OTA for VCF?

[Ian Fritz]

----- Original Message -----
From: "Grant Richter" <grichter at asapnet.net>
To: <music.maker at gte.net>; <synth-diy at dropmix.xs4all.nl>
Sent: Sunday, September 09, 2001 11:38 AM
Subject: Re: [sdiy] linearize OTA for VCF?


> If you look at the LM13600/13700 datasheets, the filter designs are simply
> CA3080 designs transferred to the different chip. Using the input diodes
> means dropping the whole circuits input impedance to 10K, which can affect
> other parts of the circuit. It's a pain.


I agree, those data sheets are pretty lame. You have to learn how to design
independently with the diodes biased.

  Ian