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CMRR simulation of a p channel differential amplifier

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Chethan

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hi,
can someone upload the setup method of how to do CMRR simulation for an p channel differential amplifier.
Thanx in advance
 

refer page 631 of Baker & Li.
This is when you want same testbench to get the CMRR.
I did it by calculating Ad and Acm separately and calculate CMRR.
let me know if it is still unanswered.
-Bharat
 

Inputs should be short circuited and check the AC gain of the amplifier. Don't apply much signal to the inputs.

Normally CMRR will be 60dB-100dB but after the layout and extraction, the exact CMRR will appeared due to asymetry of the circuit.
 

refer page 313 of Allen&Holberg. it shows you how to simulate the PSRR and CMRR.
 

the reference is not very detailed.
 

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