Quote:Since the loop BW can be observed from the spectrum, we could also see the overshoot response. The little hump there indicates the overshoot.
am I right?
Wrong.
Judging PLL XF from PLL Phase noise plot could be tricky.
The peaking that you see in phase noise plot in region 2 could be from either osc. phase noise dominating due to low BW, or i/p jitter peaking due to peaking in XF or BOTH.
Hence, to obtain loop response params, simulate loop characterstics for PLL XF separately, instead of judging them from PLL phase noise plot.
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Mayank.