A frequency estimation algorithm for ADPLL designs with two-cycle lock-in time

  • Chia Tsun Wu*
  • , Wei Wang
  • , I. Chyn Wey
  • , An Yeu Wu
  • *Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

3 Scopus citations

Abstract

This paper presents a Frequency-Estimation Algorithm for the ADPLL designs instead of traditional binary frequency-search algorithm. With the proposed ADPLL architecture and synchronization process, the lock time can be optimized to two cycles. As the reference clock varies or frequency multiplication switches, lock time holds in two reference clock cycles. An implementation of proposed ADPLL design is realized in UMC 0.18 μm 1P6M CMOS technology with core area of 520×530 μm2. The PLL has the frequency range of 140 MHz to 1030 MHz with 22ps DCO resolution.

Original languageEnglish
Title of host publicationISCAS 2006
Subtitle of host publication2006 IEEE International Symposium on Circuits and Systems, Proceedings
Pages4082-4085
Number of pages4
StatePublished - 2006
Externally publishedYes
EventISCAS 2006: 2006 IEEE International Symposium on Circuits and Systems - Kos, Greece
Duration: 21 05 200624 05 2006

Publication series

NameProceedings - IEEE International Symposium on Circuits and Systems
ISSN (Print)0271-4310

Conference

ConferenceISCAS 2006: 2006 IEEE International Symposium on Circuits and Systems
Country/TerritoryGreece
CityKos
Period21/05/0624/05/06

Fingerprint

Dive into the research topics of 'A frequency estimation algorithm for ADPLL designs with two-cycle lock-in time'. Together they form a unique fingerprint.

Cite this