A Saturating-Integrator-Based Behavioral Model of Ring Oscillator Facilitating PLL Design

Zule XU  Takayuki KAWAHARA  

IEICE TRANSACTIONS on Electronics   Vol.E100-C   No.4   pp.370-372
Publication Date: 2017/04/01
Online ISSN: 1745-1353
DOI: 10.1587/transele.E100.C.370
Type of Manuscript: BRIEF PAPER
ring oscillator,  phase-locked loop,  behavioral model,  digital PLL,  

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We propose a Simulink model of a ring oscillator using saturating integrators. The oscillator's period is tuned via the saturation time of the integrators. Thus, timing jitters due to white and flicker noises are easily introduced into the model, enabling an efficient phase noise evaluation before transistor-level circuit design.