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From: John Woodgate
Subject: Re: Rail to Rail Limit
Date: Fri, 27 Sep 2002 11:36:20 +0100
Organization: JMWA Electronics Consultancy
Reply-To: John Woodgate
NNTP-Posting-Date: Fri, 27 Sep 2002 13:22:04 +0000 (UTC)
X-Newsreader: Turnpike (32) Version 4.01 <5Z8C9wtxbnpWyFnyfFzqmVF739>
I read in sci.electronics.design that Kevin Aylward
wrote (in ) about 'Rail to Rail Limit', on Fri, 27 Sep 2002:
>"Rolf Michel" wrote in message
>> hello at all
>> how far can i use the rail to rail function of an operational
>> have 3 volt single power supply and an input signal range from 25 to
>> I'd like to gain with 25. Does this work with a rail to rail op or
>> have some distortion. (f ~ 100Hz). Who has some experience with this?
>> OP would you choose in your design? (I now there are hundreds of
>> thank you very much
>A rail-to-rail amp can swing quite near the rail without gross
>distortion. How much depends on your application, e.g. load current.
>With light loads a few 10's mv is usually doable.
>What specs do you need?
I bet his 100 mV is an r.m.s value, and he wants a gain of 25 applied to
it. That's a peak-to-peak output voltage of 7 volts! NO WAY with a 3 V
Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk
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