Title
Noise analysis and minimization in bang-bang digital PLLs
Abstract
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 latency, revealing the existence of a minimum and suggesting an optimum design criterion. Finally, an estimation of the BBPLL output spectrum taking into account the quantization noise is provided.
Year
DOI
Venue
2009
10.1109/TCSII.2009.2032470
IEEE Trans. on Circuits and Systems
Keywords
Field
DocType
frequency granularity,dominant dco noise,output spectrum,noise analysis,output jitter,dco resolution,digital bang-bang phase-locked loop,bbpll output spectrum,quantization noise,bang-bang digital plls,reference noise,closed form,phase detection,digital control,digitally controlled oscillator,phase detector,bang bang control,signal to noise ratio,quantization,phase locked loop,phase lock loop,phase locked loops,oscillators,limit cycle,jitter,spectrum
Digitally controlled oscillator,Phase-locked loop,Reference noise,Control theory,Signal-to-noise ratio,Phase noise,Electronic engineering,Jitter,Phase detector,Phase frequency detector,Physics
Journal
Volume
Issue
ISSN
56
11
1549-7747
Citations 
PageRank 
References 
37
2.24
8
Authors
6
Name
Order
Citations
PageRank
Marco Zanuso115214.89
Davide Tasca2564.48
Salvatore Levantino335143.23
Andrea Donadel4372.24
Carlo Samori534939.76
Andrea L. Lacaita632042.41