[sdiy] Problems with linearized SSI2164 ?

Neil Johnson neil.johnson71 at gmail.com
Thu Feb 7 11:01:04 CET 2019


Hi Danjel,

> Here is a link to the schematic block: https://ibb.co/njhCcbZ

Thanks!
One glaring difference between the Irwin/Gallo circuit and your
implementation is that they both use 100p loop compensation whereas
you use only 22p.
The 30k input resistor should not cause a problem with the SSI2164,
but the loop may not be stable so you need to check for HF oscillation
with a decent scope or a spectrum analyser.

Neil
--
http://www.njohnson.co.uk


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