[sdiy] Happenin' new opamp

[Mike Bryant]

Redoing the PCB for a pair of OPA2134 may be your best bet, but they’ll be gone before long as well



From: Synth-diy [mailto:synth-diy-bounces at synth-diy.org] On Behalf Of Danjel van Tijn / intellijel
Sent: 01 June 2021 22:57
To: SDIY List
Subject: Re: [sdiy] Happenin' new opamp

Can anyone recommend a good sub for the OPA1679 given the current 36 week lead time (!!!)?

On Sat, Apr 28, 2018 at 12:03 PM Neil Johnson <neil.johnson71 at gmail.com<mailto:neil.johnson71 at gmail.com>> wrote:
David,

> > If you can cope with single-supply op-amps then the TLC272
> > series is pretty good, with Ibc(typ) around 0.7pA.

> Single-supply would be a bit of a challenge, since the ASR processes both
> positive and negative voltages.

A 7808 and a 7908 should solve that for you (the TLC272 can run up to
16V supply).  Single-supply means the inputs and outputs can go down
to the -Ve rail.
Scale the input voltage to +/-5V, and back up again on the output, and
you're good to go.

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