[sdiy] low supply voltage dual opamp ??? not a OPA690..

[Roman Sowa]

OPA2170

Roman

W dniu 2016-09-21 o 13:39, Jean-Pierre Desrochers pisze:
> 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:synth1 at airmail.net]
> Envoyé : 20 septembre 2016 17:58
> À : 'Jean-Pierre Desrochers'; synth-diy at dropmix.xs4all.nl
> Objet : RE: [sdiy] low supply voltage dual opamp ???
>
> OPA690. The 055 is the date code
>
> Paul S.
>
>
> -----Original Message-----
> From: Synth-diy [mailto:synth-diy-bounces at dropmix.xs4all.nl] On Behalf Of
> Jean-Pierre Desrochers
> Sent: Tuesday, September 20, 2016 4:55 PM
> To: synth-diy at dropmix.xs4all.nl
> 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
>
>
>
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