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why the active feedback amplifier has high bandwidth?

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jwfan

jwfan

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active feedback amplifier gilbert

In the attached papar, Gilbert said: the AFA can provides accurate performance right up to its unity-gain frequency. Why? Does anyone has any idea about this?

the model of the active feedback amplifier is shown in figure 3 of the attached paper.

Thanks a lot!

Jiwei
 

Active feedback amplifiers are made of op-amps with negative feedback and it will have all the good qualities of negative feedback viz. stability,linearity,noise performance,high bandwidth....

And op-amps by itself has good qualities like CMRR..
It all comes from bode plot...
 

But what is the difference between RC compensation and using an active gm block?
 

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