<div dir="ltr"><div>Thanks for the 2040 equivalent number. The 5101 is their version of the SSM2020 dual VCA.</div><div>~G<br></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Thu, Mar 31, 2022 at 12:32 PM chris <<a href="mailto:chris@chrismusic.de">chris@chrismusic.de</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">That mystery has been puzzling me for quite some time.<br>
<br>
In my rev1 the SSM2040 equivalent is Exar XR5099, and then there are<br>
XR5101, don't remember what they stood for (ADSR?). <br>
IIRC, the oscillator chips have some tempco stuff glued on them, so I<br>
have no idea how they are labelled.<br>
<br>
Chris<br>
<br>
<br>
<br>
On Thu, 31 Mar 2022 10:18:00 -0700 g montalbano via Synth-diy<br>
<<a href="mailto:synth-diy@synth-diy.org" target="_blank">synth-diy@synth-diy.org</a>> wrote:<br>
<br>
> ---------- Forwarded message ---------<br>
> From: klosmon <<a href="mailto:klosmon@sbcglobal.net" target="_blank">klosmon@sbcglobal.net</a>><br>
> Date: Thu, Mar 31, 2022 at 10:15 AM<br>
> Subject: EXAR SSM chips<br>
> To: <<a href="mailto:montalbanogmm@gmail.com" target="_blank">montalbanogmm@gmail.com</a>><br>
> <br>
> <br>
> Back in the day, EXAR made versions of the SSM chips in the Rev1 & 2. I've<br>
> seen them in the past in units I've serviced, and noticed that they had<br>
> different numbers than the chips they were replacing (but stupidly didn't<br>
> write down those numbers). Does anyone here have any record of the EXAR<br>
> numbers?<br>
> Thanks.<br>
> ~G<br>
<br>
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