<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN">
<html><body style='font-size: 10pt; font-family: Verdana,Geneva,sans-serif'>
<p>Thanks to you all.. specially Paul..</p>
<p>The Microchip MCP6002 will effectively do the job here..</p>
<p>(But I still don't understand the "690 055" lettering on the original 8SOIC chip... )</p>
<p>JP</p>
<p>***************************************</p>
<p>Le 2016-09-21 07:39, Jean-Pierre Desrochers a écrit :</p>
<blockquote type="cite" style="padding-left:5px; border-left:#1010ff 2px solid; margin-left:5px"><!-- html ignored --><!-- head ignored --><!-- meta ignored -->
<pre>I'm back guys with my request..
Paul suggested it was an OPA690.
Well it looks it's not.
The OPA690 is a single opamp.
The one I need to replace is a dual opamp
(same pinout as the TL072.. not TL071).
Both outputs are on pins 1 and 7.
Supply pins are 4 and 8.
So I'm back where I was from start.
I need a dual opamp that:
- runs on 5vdc
- low power (powered with AAA battery 1.5v stepped up to 5vdc for all
circuit)
- 8SOIC package
Any idea the ship that would do ??
****************************************************************************
*
-----Message d'origine-----
De : Paul Schreiber [mailto:<a href="mailto:synth1@airmail.net">synth1@airmail.net</a>]
Envoyé : 20 septembre 2016 17:58
À : 'Jean-Pierre Desrochers'; <a href="mailto:synth-diy@dropmix.xs4all.nl">synth-diy@dropmix.xs4all.nl</a>
Objet : RE: [sdiy] low supply voltage dual opamp ???
OPA690. The 055 is the date code
Paul S.
-----Original Message-----
From: Synth-diy [mailto:<a href="mailto:synth-diy-bounces@dropmix.xs4all.nl">synth-diy-bounces@dropmix.xs4all.nl</a>] On Behalf Of
Jean-Pierre Desrochers
Sent: Tuesday, September 20, 2016 4:55 PM
To: <a href="mailto:synth-diy@dropmix.xs4all.nl">synth-diy@dropmix.xs4all.nl</a>
Subject: [sdiy] low supply voltage dual opamp ???
I need a low voltage dual opamp for a wireless microphone That runs with one
AAA battery. There is a step-up supply voltage circuit that rise the 1.5v to
5vdc to supply all the remote circuit including a dual opamp (single supply
used). This opamp needs to be changed.
All I can say about this opamp is that the case is a 8SOIC and the pinout is
the same as a TL072. The lettering on the case is :
690 followed by 055 (or D55 ???).
So I'm looking for a low supply voltage, low power and quiet dual opamp to
replace it.
Any idea ?
Thamks.
JP
_______________________________________________
Synth-diy mailing list
<a href="mailto:Synth-diy@dropmix.xs4all.nl">Synth-diy@dropmix.xs4all.nl</a>
<a href="http://dropmix.xs4all.nl/mailman/listinfo/synth-diy">http://dropmix.xs4all.nl/mailman/listinfo/synth-diy</a>
_______________________________________________
Synth-diy mailing list
<a href="mailto:Synth-diy@dropmix.xs4all.nl">Synth-diy@dropmix.xs4all.nl</a>
<a href="http://dropmix.xs4all.nl/mailman/listinfo/synth-diy">http://dropmix.xs4all.nl/mailman/listinfo/synth-diy</a>
</pre>
</blockquote>
<p> </p>
<div>
<pre>-- <br />« L'indépendance, c'est comme un pont :
avant, personne n'en veut, après, tout le monde le prend. »
Félix Leclerc
</pre>
</div>
</body></html>