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resolution of digitally controlled oscillator in PLL

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tv123

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What is resolution of a dco? please explain
 

dick_freebird

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"The" resolution? 1/2^N (control bits) times whatever
the tuning range is, more or less.

These used to be called NCO, numerically controlled
oscillator, maybe you will find more references using
that.
 

dshoter13

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Basically is what @dick_freebird said, plus the fact that almost all DCO's employ sigma-deltas to lower the frequency's granularity. For more details I would suggest you to take a look at PhD thesis of Professor Robert Bogdan Staszewski.
 

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