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tyanata
Joined: 27 Nov 2003
Posts: 122
Helped: 3
Location: Sofia
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 06 Nov 2008 15:04 Rail to Rail input single output amplifier, help |
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| Can you propose such a circuit
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svicent
Joined: 11 Jul 2001
Posts: 413
Helped: 23
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06 Nov 2008 16:20 Re: Rail to Rail input single output amplifier, help |
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| The MAX4165-MAX4169 family of operational amplifiers combines excellent DC accuracy with high output current drive, single-supply operation, and rail-to-rail inputs and outputs. These devices operate from a single +2.7V to +6.5V supply, or from dual ±1.35V to ±3.25V supplies. They typically draw 1.2mA supply current, and are guaranteed to deliver 80mA output current.
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06 Nov 2008 16:20 Ads |
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eem2am
Joined: 22 Jun 2008
Posts: 753
Helped: 13
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06 Nov 2008 19:08 Re: Rail to Rail input single output amplifier, help |
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there are many...if you see maplin catalog they have many and it states if its single supply etc, rail to rail
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tyanata
Joined: 27 Nov 2003
Posts: 122
Helped: 3
Location: Sofia
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07 Nov 2008 15:28 Re: Rail to Rail input single output amplifier, help |
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| I mean, i have to design such a amplifier. Can any body propose relevant circuit.
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Old Nick
Joined: 14 Sep 2007
Posts: 445
Helped: 49
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07 Nov 2008 17:18 Re: Rail to Rail input single output amplifier, help |
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| I've not looked at these for a while, but I think a standard op-amp design but with common-source voltge followers added at the inputs to supplly the rail to rail inputs is usually how it's done. I could be wrong, but I think that's how it's done
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PaloAlto
Joined: 08 Oct 2007
Posts: 188
Helped: 27
Location: Sevilla, Spain
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07 Nov 2008 22:44 Re: Rail to Rail input single output amplifier, help |
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I recommend the work of Ron Hogervorst for the rail to rail input.
You can read a lot about this topic here:
http://www.edaboard.com/viewtopic.php?t=147193&highlight=hogervorst
http://www.edaboard.com/viewtopic.php?t=113231&highlight=hogervorst
http://www.edaboard.com/viewtopic.php?t=122051&highlight=hogervorst
Here you even have some schematics:
http://www.edaboard.com/viewtopic.php?t=204726&highlight=hogervorst
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eem2am
Joined: 22 Jun 2008
Posts: 753
Helped: 13
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08 Nov 2008 17:50 Rail to Rail input single output amplifier, help |
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Page 2 of LM324 datasheet gives you schematic
http://cache.national.com/ds/LM/LM124.pdf
its rail to rail as yuo want
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