A Low-Jitter Cell-Based Digitally Controlled Oscillator With Differential Multiphase Outputs

Ming Chiuan Su, Shyh-Jye Jou, Wei-Zen Chen

Research output: Contribution to journalArticlepeer-review

10 Scopus citations

Abstract

A low-jitter digitally controlled oscillator (DCO) with multiphase differential outputs and good linearity is presented. The DCO is composed of four differential delay cells and can achieve linear tuning over a wide frequency range. The proposed fully differential delay cell comprises logic cells in standard library and varactors. The measured rms jitter and pk-pk jitter from 2.5-GHz carrier are 2.827 and 29 ps, respectively. The power consumption is 6 mW from a 1.2 V supply. An experimental prototype is designed using 65-nm CMOS technology, and the chip area is 156 μm × 92 μ2.

Original languageEnglish
Article number6798731
Pages (from-to)766-770
Number of pages5
JournalIEEE Transactions on Very Large Scale Integration (VLSI) Systems
Volume23
Issue number4
DOIs
StatePublished - 1 Apr 2015

Keywords

  • All-digital
  • differential
  • digitally controlled oscillator (DCO)
  • low jitter
  • multiphase

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