Interview Question: Charge pump Gain

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mouzid

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Hello,

I was asked this question in an interview.
What is the gain of the charge pump in he figure ?
My response was Kcp=Ic/(2*Pi)
What is the Gain of the Charge pump if we retrieve the intverter ?
My reply was Kcp=Ic*((2*pi)-1)/2*pi

Is my replies trues ?

Thanks in advance.
 

1- You're rigth K=Ic/(2*pi)
2- I'm not sure for the second but I thing K=Ic-[Ic*(pi-1)/(2*pi)]
 

AdvaRes said:
1- You're rigth K=Ic/(2*pi)
2- I'm not sure for the second but I thing K=Ic-[Ic*(pi-1)/(2*pi)]
Click to expand...

the first I agree, but I do not fully get the second ? does it also depend on the delay of the inverter ?

can anyone explain it ?
 

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