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cmos differential amplifier

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prachanda

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hi can you give the steps to find the aspect ratio of the basic differential amplifier having pmos load pair and inputs given to the nmos pair
 

hi can you give some important parameters like
gain, UGF, load cap., pwr. supply, max. curr. consumption, necessary matching accuracy resp. max. offset, process size ...

If all this doesn't matter to you, use e.g.

Wp/Lp = 20*Lp/5*Lmin = 20:1
Wn/Ln = 100*Ln/5*Lmin = 100:1
 

It depends on your offset and noise requirement.
The pmos loading pair mismatch and noise will be reduced by gmL/gmI. gmL is gm of loading PMOS. gmI is gm of input NMOS.
 
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    peja90

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