Design a folded Cascode OPAMP with nmos load

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Jyotirmaya Patra

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the only given contions are ones below
i) Open loop gain(DC gain) ≥ 80 dB
ii) UGB ≥ 100 MHz
iii) Phase margin ≈ 600

i am new to designing.....how to i find w and l using these given parameters and then find the dc bias voltages

 

Hi Jyotimaya

You can follow this link to design your opamp

**broken link removed**

- - - Updated - - -

Hi Jyotimaya

The previous link help you to design single output first after you have done it , here is differential output with cmfb and bias

http://file.scirp.org/Html/7-7600135%5Cc55bdf8f-147f-4bd2-9384-1ad024895e1b.jpg
 
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