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poles and zeroes basics Type-III compensation in 2 Stage CMFB amp

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Safiya

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Hi, what are poles and zeroes in a compensation network like Type-3 compensation for 2 stage cmfb amp.
how we can boost phase margin without affecting Bandwidth. by using miller compensation cap, BW decreases.
thanks
Safiya
 

tompham

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Hi Safiya
Make sure cmfb opamp has BW larger than main opamp BW to avoid decresing in your BW. To save power I use Ahuja compensation technique better than Miller compensation
 
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    Safiya

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