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Interview Question: Charge pump Gain

 
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mouzid



Joined: 22 Jun 2007
Posts: 191
Helped: 9
Post12 May 2008 14:44   Interview Question: Charge pump Gain
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.

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AdvaRes



Joined: 14 Feb 2008
Posts: 476
Helped: 22
Post13 May 2008 9:11   Interview Question: Charge pump Gain
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)]
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taofeng



Joined: 21 Mar 2006
Posts: 90
Helped: 1
Post13 May 2008 10:32   Re: Interview Question: Charge pump Gain
AdvaRes wrote:
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)]


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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