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[SOLVED] Cmfb

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Mohammedkhalid

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Hi,

I want to design a fully differential amplifiers to get the gain of 80db, to control the output nodes I need to use cmfb. But in cmd block resistors will be there which limits the gain. Can anyone how can I achieve 80db gain?
 
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A telescopic cascode amplifier can provide very high gain (~80 dB) by increasing the output impedance. A folded cascode topology can be used if you require higher voltage swings. Adding gain-boosted cascode transistors will further enhance the output resistance and thus the gain.
 
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