A high-driving class-AB buffer amplifier with a new pseudo source follower

Chih Wen Lu*, Yen Chih Shen, Meng Lieh Sheu

*Corresponding author for this work

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

5 Scopus citations

Abstract

A high-driving class-AB buffer amplifier, which consists of a high-gain input stage and a pseudo source follower, is proposed. The pseudo source follower consists of two same types of differential pairs rather than two complementary error amplifiers. The high-driving capability is mainly provided by the folded amplifiers. An experimental prototype buffer amplifier implemented in a 0.35-μm CMOS technology demonstrates that the circuit dissipates an average static power consumption of only 660 μW at a power supply of 3.3 V, and exhibits the slew rates of 2.7 V/μs and 3.8 V/μs for the rising and falling edges, respectively, under a 300Ω/150 pF load. The second and third harmonic distortions (HD2 and HD3) are -67 dB and -65 dB, respectively, at 20 KHz under the same load.

Original languageEnglish
Title of host publication2007 IFIP International Conference on Very Large Scale Integration, VLSI-SoC
Pages105-109
Number of pages5
DOIs
StatePublished - 2007
Event2007 IFIP International Conference on Very Large Scale Integration, VLSI-SoC - Atlanta, GA, United States
Duration: 15 Oct 200717 Oct 2007

Publication series

Name2007 IFIP International Conference on Very Large Scale Integration, VLSI-SoC

Conference

Conference2007 IFIP International Conference on Very Large Scale Integration, VLSI-SoC
CountryUnited States
CityAtlanta, GA
Period15/10/0717/10/07

Keywords

  • Buffer amplifier
  • Class-AB
  • Error amplifier
  • Pseudo source follower

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