[SOLVED] PMOS or NMOS for wide swing folded cascode amplifier

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darkseid

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Dear All

What is the difference between NMOS current mirror and PMOS current mirror in terms of performance and which one is preferred for a wide swing folded cascode amplifier and why?
 

Well there isn't really a difference in mirroring performance, they will both mirror! The PMOS current mirror will have a larger offset because of the Avt fabrication offset and will have a lower flicker noise.

Jgk
 
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