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how to improve the match of folded cascode amplifier
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chichi



Joined: 20 Aug 2009
Posts: 15
Post28 Oct 2009 14:20   

how to improve the match of folded cascode amplifier
i am designing a folded cascode amplifier,with high gain and low current required,when i ever i run a monte carlo simulation in cadence while only mismatch is selected,the DM gain and CM gain vary a lot,means mismatch is really bad,can anybody tell me how to improve the mismatch of the whole circuit???thanks
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mengcy



Joined: 21 Aug 2006
Posts: 86
Helped: 6
Location: shanghai
Post29 Oct 2009 3:40   

how to improve the match of folded cascode amplifier
increase L or area of the input transistor pairs.
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snafflekid



Joined: 09 May 2007
Posts: 118
Helped: 16
Location: USA
Post29 Oct 2009 7:06   

Re: how to improve the match of folded cascode amplifier
The current mirror portion includes a non-trivial amount of gain as well. Interdigitate the mirrors, increase channel lengths.
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