A full differential charge pump based on symmetrical complementary half-current circuit architecture

Qixiang Huang, Wei Zhao, Wenping Wang, Wen Wu, Caixia Du, Zhuqing Feng, Jin He, Ping He, Lei Song

Research output: Chapter in Book/Conference Proceeding/ReportConference Paper published in a bookpeer-review

Abstract

A full differential charge pump with low current mismatch and deviation is designed in this paper based on the symmetric complementary half-current circuit architecture. It adopts two symmetrical complementary P-N replica circuits with half value of the reference current source to remove the current mismatch and deviation. The charging and discharging current are matched very well over a wide output range. The maximum output current mismatch and deviation of the proposed charge pump are 0.78% and 0.97% over the output voltage range from 0.2V to 1.5V, respectively. The good current matching characteristics and low deviation effectively reduce the reference spur of charge pump phase locked loops. The proposed charge pump is implemented in 0.18μm CMOS technology with 1.8V supply.

Original languageEnglish
Title of host publicationAdvanced Manufacturing, Electronics and Microsystems - TechConnect Briefs 2016
EditorsBart Romanowicz, Matthew Laudon, Fiona Case, Fiona Case, Bart Romanowicz
PublisherTechConnect
Pages63-66
Number of pages4
ISBN (Electronic)9780997511734
Publication statusPublished - 2016
Externally publishedYes
Event10th Annual TechConnect World Innovation Conference and Expo, Held Jointly with the 19th Annual Nanotech Conference and Expo, and the 2016 National SBIR/STTR Conference - Washington, United States
Duration: 22 May 201625 May 2016

Publication series

NameAdvanced Materials - TechConnect Briefs 2016
Volume4

Conference

Conference10th Annual TechConnect World Innovation Conference and Expo, Held Jointly with the 19th Annual Nanotech Conference and Expo, and the 2016 National SBIR/STTR Conference
Country/TerritoryUnited States
CityWashington
Period22/05/1625/05/16

Keywords

  • Charge pump
  • Deviation
  • Differential charge pump
  • Mismatch
  • Symmetrical complementary replica circuits

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