A performance comparison of PLLs for clock generation using ring oscillator VCO and LC oscillator in a digital CMOS process

  • Authors:
  • Takahito Miyazaki;Masanori Hashimoto;Hidetoshi Onodera

  • Affiliations:
  • Kyoto University;Kyoto University;Kyoto University

  • Venue:
  • Proceedings of the 2004 Asia and South Pacific Design Automation Conference
  • Year:
  • 2004

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Abstract

This paper describes a performance comparison of two PLLs for clock generation using a ring oscillator based VCO and an LC oscillator based VCO. We fabricate two 1.6GHz PLLs in a 0.18 μm digital CMOS process and compare their performances based on the measurement results. We also predicts major performances of PLLs in the future such as jitter, power consumption and chip area, based on a qualitative evaluation in an analytic way.