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bharatsmile2007
Joined: 19 Sep 2007
Posts: 120
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 25 Jun 2009 7:28 folded cascode amplifier |
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hi
what is the use for 2nd stage(class AB,Common source,etc..) in folded cascode opamp?
THanks
Bhanu
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25 Jun 2009 7:28 Ads |
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tyanata
Joined: 27 Nov 2003
Posts: 122
Helped: 3
Location: Sofia
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25 Jun 2009 11:30 rail-to-rail folded cascode |
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| Increase output swing up to rail-to-rail. Increased gain, too.
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mastericke
Joined: 25 Jun 2009
Posts: 9
Helped: 1
Location: china
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25 Jun 2009 15:28 Re: Two stage folded cascode amplifier? |
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It can be used as a unit-gain amplifier,maybe.
Increasing the output swing is the main point in most palce.
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seej
Joined: 02 Jan 2008
Posts: 15
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27 Jun 2009 16:08 Two stage folded cascode amplifier? |
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| The advantages have been correctly pointed out. This does come at the cost of reduced speed. But then for smaller technologies gain is a significant issue.
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linkfox
Joined: 18 Dec 2007
Posts: 52
Helped: 3
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27 Jun 2009 23:32 Re: Two stage folded cascode amplifier? |
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improve the output voltage swing
and reduce the output impedance (thus keep the gain when there is external load)
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bharatsmile2007
Joined: 19 Sep 2007
Posts: 120
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06 Jul 2009 13:19 Re: Two stage folded cascode amplifier? |
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| Thanks all of the reply...
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