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Design review: Fully differential telescopic Operational amplifier.

Alex_Bam

Sep 28, 2020
25
Joined
Sep 28, 2020
Messages
25
Hello,
I used Behzad Razavi's book to design a fully differential telescopic op-amp [screenshot attached]. Then I follow the same steps to design my proposed opamp, but I am not getting the desired result. Can someone point out where I'm doing mistakes?
For your reference, I have attached hand calculation and simulation screenshots. Thanks
My design specifications are: Supply voltage: Vdd=5V, Output voltage swing: 5V, Power ≤ 5mW, Gain: 500, UnCox= 151uA/V2, UpCox: 26uA/V2, Vthn=0.84V, Vthp: |1V| .
 

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Arouse1973

Adam
Dec 18, 2013
5,177
Joined
Dec 18, 2013
Messages
5,177
Hello I am interested in knowing what program you are using to simulate this? It looks like you are confident in your calculation so I am wondering why you can not fault find this. What is your background and what experience do you have. Thanks Adam
 
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