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A high DC-gain modified CMOS OTA

  • Sungkyunkwan University

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

Abstract

A new operational transconductance amplifier (OTA) based on the conventional triple folded cascode (TFC) structure is presented. Using the proposed method, the DC gain enhances by adding only three positive feedback devices to the TFC structure. The simulation results for the designed OTA in a typical 0.35μm CMOS technology show 20dB DC gain enhancement of conventional TFC while bandwidth, output voltage swing range, and the phase margin of conventional TFC are not affected. Higher linearity in the larger output voltage swings is the other advantages of proposed approach in comparison to previously reported positive feedback methods.

Original languageEnglish
Title of host publicationISOCC 2013 - 2013 International SoC Design Conference
PublisherIEEE Computer Society
Pages329-332
Number of pages4
ISBN (Print)9781479911417
DOIs
StatePublished - 2013
Event2013 International SoC Design Conference, ISOCC 2013 - Busan, Korea, Republic of
Duration: 17 Nov 201319 Nov 2013

Publication series

NameISOCC 2013 - 2013 International SoC Design Conference

Conference

Conference2013 International SoC Design Conference, ISOCC 2013
Country/TerritoryKorea, Republic of
CityBusan
Period17/11/1319/11/13

Keywords

  • dc-gain
  • linearity
  • positive feedback device (PFD)
  • triple folded cascode

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