A pseudo-differential OTA with linearity improving by HD3 feedforward

Chao Liang Chien*, Chung-Chih Hung, Chia Wei Chen

*Corresponding author for this work

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

6 Scopus citations

Abstract

This paper presents a fully balanced structure of a CMOS operational transconductance amplifier (OTA) with high linearity for frequency up to 50MHz. The proposed circuit is based on a conventional pseudo-differential structure with a third-order harmonic distortion (HD3) feedforward technique to cancel out the output 3rd harmonic component. The OTA was fabricated in the TSMC CMOS 0.18μm technology. The measurement results show the HD3 of -62dB with 0.4-Vpp 50MHz input signal and the power consumption of 0.47mW at a 1.2-V voltage supply.

Original languageEnglish
Title of host publicationProceedings of Technical Papers - 2009 IEEE Asian Solid-State Circuits Conference, A-SSCC 2009
Pages237-240
Number of pages4
DOIs
StatePublished - 1 Dec 2009
Event2009 IEEE Asian Solid-State Circuits Conference, A-SSCC 2009 - Taipei, Taiwan
Duration: 16 Nov 200918 Nov 2009

Publication series

NameProceedings of Technical Papers - 2009 IEEE Asian Solid-State Circuits Conference, A-SSCC 2009

Conference

Conference2009 IEEE Asian Solid-State Circuits Conference, A-SSCC 2009
CountryTaiwan
CityTaipei
Period16/11/0918/11/09

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