Published June 1, 1999
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Journal Article
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Jitter and phase noise in ring oscillators
Chicago
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Abstract
A companion analysis of clock jitter and phase noise of single-ended and differential ring oscillators is presented. The impulse sensitivity functions are used to derive expressions for the jitter and phase noise of ring oscillators. The effect of the number of stages, power dissipation, frequency of oscillation, and short-channel effects on the jitter and phase noise of ring oscillators is analyzed. Jitter and phase noise due to substrate and supply noise is discussed, and the effect of symmetry on the upconversion of 1/f noise is demonstrated. Several new design insights are given for low jitter/phase-noise design. Good agreement between theory and measurements is observed.
Additional Information
© Copyright 1999 IEEE. Reprinted with permission. Manuscript received April 8, 1998; revised November 2, 1998. The authors would like to thank M. A. Horowitz, G. Nasserbakht, A. Ong, C. K. Yang, B. A. Wooley, and M. Zargari for helpful discussions and support. They would further like to thank Texas Instruments, Inc., and Stanford Nano-Fabrication facilities for fabrication of the oscillators.Files
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