Explain non-ideal effects of PLL.

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written 6.1 years ago by

modified 6.1 years ago by

a) PFD/CP Non-linearities

i) Several imperfections in the PFD/CP circuit lead to high ripple on the control voltage even when the loop is locked. Therefore, the ripple modulates the VCO frequency producing a $\omega /f$ that is no longer periodic.

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Coincident pulses generated by PFD with zero phase difference.

ii) …

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