Wide swing signal amplification by SC voltage doubling

Sebastian Höppner*, René Schüffny, Zuo-Min Tsai , Huei Wang

*Corresponding author for this work

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

Abstract

This paper presents a switched capacitor voltage doubler as analog signal amplifier to increase the swing in low voltage electronics like PLLs. A signal is doubled with respect to a reference voltage which results in a wide signal swing exceeding the supply rails. An analytical expression of the transfer function, from which design equations for circuit parameters can be obtained, is derived including the effect of incomplete voltage settling due to finite switch resistances. The theory is validated by measurements of a voltage doubler as part of a PLL charge pump in 90nm CMOS technology.

Original languageEnglish
Title of host publicationISCAS 2010 - 2010 IEEE International Symposium on Circuits and Systems
Subtitle of host publicationNano-Bio Circuit Fabrics and Systems
Pages761-764
Number of pages4
DOIs
StatePublished - 31 Aug 2010
Event2010 IEEE International Symposium on Circuits and Systems: Nano-Bio Circuit Fabrics and Systems, ISCAS 2010 - Paris, France
Duration: 30 May 20102 Jun 2010

Publication series

NameISCAS 2010 - 2010 IEEE International Symposium on Circuits and Systems: Nano-Bio Circuit Fabrics and Systems

Conference

Conference2010 IEEE International Symposium on Circuits and Systems: Nano-Bio Circuit Fabrics and Systems, ISCAS 2010
CountryFrance
CityParis
Period30/05/102/06/10

Keywords

  • Charge pump
  • Phaselocked loop (PLL)
  • Switched capacitor
  • Voltage doubler

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