pancho_hideboo
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Wrong.Some amount of input resistance must be present, for the structures to work.
Do you understand charge pump type PLL surely ?So I said, why not try a simulation?
Your parameter's values give differerent transimpedance.To see the obvious manner in which their behavior might differ, a sine sweep is useful, to bring out their rolloff curve.
Completely irrelevant.Notice C1 has a sharper cutoff curve. C4 has a bandpass curve. These might serve some purpose for the PLL function, I don't know.
See #4 in this thread.The equations in post #1 clarify that both circuits are functionally equivalent, you can use one or the other.
So what's exactly the problem?