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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Redoing the PCB for a pair of OPA2134 may be your best bet, but they’ll be gone before long as well<o:p></o:p></span></p>
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<p class="MsoNormal"><b><span lang="EN-US" style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">From:</span></b><span lang="EN-US" style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> Synth-diy [mailto:synth-diy-bounces@synth-diy.org]
<b>On Behalf Of </b>Danjel van Tijn / intellijel<br>
<b>Sent:</b> 01 June 2021 22:57<br>
<b>To:</b> SDIY List<br>
<b>Subject:</b> Re: [sdiy] Happenin' new opamp<o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Can anyone recommend a good sub for the OPA1679 given the current 36 week lead time (!!!)?<o:p></o:p></p>
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<p class="MsoNormal">On Sat, Apr 28, 2018 at 12:03 PM Neil Johnson <<a href="mailto:neil.johnson71@gmail.com" target="_blank">neil.johnson71@gmail.com</a>> wrote:<o:p></o:p></p>
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<p class="MsoNormal">David,<br>
<br>
> > If you can cope with single-supply op-amps then the TLC272<br>
> > series is pretty good, with Ibc(typ) around 0.7pA.<br>
<br>
> Single-supply would be a bit of a challenge, since the ASR processes both<br>
> positive and negative voltages.<br>
<br>
A 7808 and a 7908 should solve that for you (the TLC272 can run up to<br>
16V supply). Single-supply means the inputs and outputs can go down<br>
to the -Ve rail.<br>
Scale the input voltage to +/-5V, and back up again on the output, and<br>
you're good to go.<br>
<br>
Neil<br>
-- <br>
<a href="http://www.njohnson.co.uk" target="_blank">http://www.njohnson.co.uk</a><br>
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