Debdut
Full Member level 3
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I have created an integer and fractional PLL.
The integer PLL is locking fine. The fractional PLL has a delta-sigma modulator which varies the feedback frequency divider modulus. Maybe that's why the control voltage on the VCO is varying periodically?
Is there a way to mitigate the periodic variation of control voltage of the VCO in fractional PLL?
The integer PLL is locking fine. The fractional PLL has a delta-sigma modulator which varies the feedback frequency divider modulus. Maybe that's why the control voltage on the VCO is varying periodically?
Is there a way to mitigate the periodic variation of control voltage of the VCO in fractional PLL?