<div dir="ltr">I swapped the 22p for 100p and problems seemed to go away!<div><br></div><div>I guess the v2164 was less sensitive to HF oscillations (or at least we were able to get away with 22p) but it is critical to have a larger cap with the ssi2164.</div><div><br></div><div><br><div><br></div></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Thu, Feb 7, 2019 at 2:01 AM Neil Johnson <<a href="mailto:neil.johnson71@gmail.com">neil.johnson71@gmail.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Hi Danjel,<br>
<br>
> Here is a link to the schematic block: <a href="https://ibb.co/njhCcbZ" rel="noreferrer" target="_blank">https://ibb.co/njhCcbZ</a><br>
<br>
Thanks!<br>
One glaring difference between the Irwin/Gallo circuit and your<br>
implementation is that they both use 100p loop compensation whereas<br>
you use only 22p.<br>
The 30k input resistor should not cause a problem with the SSI2164,<br>
but the loop may not be stable so you need to check for HF oscillation<br>
with a decent scope or a spectrum analyser.<br>
<br>
Neil<br>
--<br>
<a href="http://www.njohnson.co.uk" rel="noreferrer" target="_blank">http://www.njohnson.co.uk</a><br>
</blockquote></div>-- <br><div dir="ltr" class="gmail_signature" data-smartmail="gmail_signature"><div dir="ltr">cheers,<div><br><div><div>Danjel van Tijn<br>Intellijel Designs Inc.<br>m. +001 <a href="tel:(604)%20773-2426" value="+16047732426" target="_blank">604-773-2426</a><br><br><a href="http://www.intellijel.com" target="_blank">www.intellijel.com</a><br><a href="https://www.instagram.com/intellijel/">https://www.instagram.com/intellijel/</a></div><div><a href="http://www.facebook.com/intellijel" target="_blank">www.facebook.com/intellijel</a><br><a href="http://www.youtube.com/intellijel" target="_blank">www.youtube.com/intellijel</a><br><a href="http://www.twitter.com/intellijel" target="_blank">www.twitter.com/intellijel</a><br><br><br></div></div></div></div></div>