Re: Choosing voltage opamp

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#2062

From: David L. Jones
Date: Sun, 24 Sep 2006 07:28

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Vitaliy wrote:
> 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:

It depends on the particular device.
As a general rule of thumb an opamp can get to within at least 2V of
either rail, so a +/-5V supply will give you at a minimum +/-3V. Your
opamp could aboviously get within 1V of the rail to give you 8Vp-p.
There are "rail-to-rail" opamps that claim to get very close to the
full output voltage rail, but usually not at any significant output
current.
You need a higher rail voltage regardless of the device you choose.

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: 24 Sep 2006 00:28:51 -0700
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