[sdiy] Newbie question: Diode ladders

[Antti Huovilainen]

On Sun, 18 Sep 2005, harrybissell wrote:

> OTAs are usually less than 25mV at the device pins and that is PUSHING
> it already. Probablt 10mV is a good figure.  If you use the diode

Output - input relation of unlinearized OTA is
out = Ictrl*tanh(in/(2*Vt))
You can use that to calculate how much distortion (roughly) you are going 
to get. Note that in a filter the distortion is going to be less as there 
is some feedback around the OTA in each stage.

Antti

"No boom today. Boom tomorrow. There's always a boom tomorrow"
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