Re: Choosing voltage opamp

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#2058

From: Vitaliy
Date: Sat, 23 Sep 2006 23:44

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Hi David,

Is the maximum Vp-p I can get from an opamp with +/-5V rails 5V then?
I know I measured the output of transimpedance amplifier and I was
getting maximum ~8Vp-p :confused:

Vitaliy

David L. Jones wrote:
> Vitaliy wrote:
> > Hello,
> >
> > I'm looking to add the 2nd stage to photodiode transimpedance
> > amplifier. All I want to achieve by 2nd stage is voltage gain and
> > capability to drive 50 Ohm loads. The first stage is OPA657.
> >
> > 1) a) Given power supply for opamp +-5V, should I select the opamp that
> > has Io,max=>200mA. I do expect Vpeak-to-peak,output to be 10V.
> >    b) Is that output current achievable only at maximum supply voltage,
> > or as long as
>
> You won't get 10Vp-p output from an opamp with +/-5V rails, you need a
> larger supply voltage.
> 
> Dave :)

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From: "Vitaliy" <vmykhayl@ee.ryerson.ca>
Newsgroups: sci.electronics.design,sci.electronics.basics,aus.electronics
Subject: Re: Choosing voltage opamp
Date: 23 Sep 2006 16:44:48 -0700
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