Re: Choosing voltage opamp

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#2056

From: David L. Jones
Date: Sat, 23 Sep 2006 22:18

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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: "David L. Jones" <altzone@gmail.com>
Newsgroups: sci.electronics.design,sci.electronics.basics,aus.electronics
Subject: Re: Choosing voltage opamp
Date: 23 Sep 2006 15:18:04 -0700
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