Noise Analysis and Minimization in Bang-Bang Digital PLLs

  title={Noise Analysis and Minimization in Bang-Bang Digital PLLs},
  author={Marco Zanuso and Davide Tasca and Salvatore Levantino and Andrea Donadel and Carlo Samori and Andrea L. Lacaita},
  journal={IEEE Transactions on Circuits and Systems II: Express Briefs},
In digital bang-bang phase-locked loops (BBPLLs), both the hard nonlinearity of the phase detector and the frequency granularity of the digitally controlled oscillator (DCO) can give rise to undesired tones or peaking in the output spectrum. This work derives the maximum ratio between DCO resolution and jitter, which avoids limit cycles, in the case of dominant DCO noise over reference noise. Moreover, the output jitter is expressed in closed form as a function of the loop parameters and… CONTINUE READING
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Jitter transfer analysis of tracked oversampling techniques for multigigabit clock and data recovery

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