How to simulate charge pump noise and bring it into PLL noise model

belgium

Dear Experts,

I am surveying PLL every noise source.
But for charge pump noise, i have two questions for that.
1. how to simulate its noise? current noise?
2. becasue only a short period time for charge pump turn-on in steady state,
    how to consider this effecit in noise model?


Need your help, thanks,

Belgium

yxh12321

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