A New High-Gain Operational Amplifier Using Transconductance-Enhancement Topology Integrated With Metal Oxide TFTs

Zhuo-Jia Chen; Wen-Xing Xu; Jian-Dong Wu; Lei Zhou; Wei-Jing Wu; Jian-Hua Zou; Miao Xu; Lei Wang; Yu-Rong Liu; Jun-Biao Peng

doi:10.1109/JEDS.2018.2883585

IEEE Journal of the Electron Devices Society (Jan 2019)

A New High-Gain Operational Amplifier Using Transconductance-Enhancement Topology Integrated With Metal Oxide TFTs

Zhuo-Jia Chen,
Wen-Xing Xu,
Jian-Dong Wu,
Lei Zhou,
Wei-Jing Wu,
Jian-Hua Zou,
Miao Xu,
Lei Wang,
Yu-Rong Liu,
Jun-Biao Peng

Affiliations

Zhuo-Jia Chen: ORCiD; School of Electronic and Information Engineering, South China University of Technology, Guangzhou, China
Wen-Xing Xu: School of Electronic and Information Engineering, South China University of Technology, Guangzhou, China
Jian-Dong Wu: ORCiD; School of Electronic and Information Engineering, South China University of Technology, Guangzhou, China
Lei Zhou: Research and Development Department of New Vision Opto-Electronic Technology Company, Ltd., Guangzhou, China
Wei-Jing Wu: ORCiD; State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou, China
Jian-Hua Zou: Research and Development Department of New Vision Opto-Electronic Technology Company, Ltd., Guangzhou, China
Miao Xu: State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou, China
Lei Wang: State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou, China
Yu-Rong Liu: School of Electronic and Information Engineering, South China University of Technology, Guangzhou, China
Jun-Biao Peng: State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou, China

DOI: https://doi.org/10.1109/JEDS.2018.2883585
Journal volume & issue: Vol. 7
pp. 111 – 117

Abstract

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This paper presents an integrated operational amplifier (OPAMP) consisting of only n-type metal oxide thin-film transistors. In addition to using positive feedback in the input differential pair, a transconductance-enhancement topology is applied to improve the gain of the OPAMP. The OPAMP has a voltage gain (Av) of 29.54 dB over a 3-dB bandwidth of 9.33 kHz at a supply voltage of 15 V. The unity-gain frequency, phase margin (PM), and dc power consumption (PDC) are 180.2 kHz, 21.5° PM and 5.07 mW, respectively.

Published in IEEE Journal of the Electron Devices Society

ISSN: 2168-6734 (Online)
Publisher: IEEE
Country of publisher: United States
LCC subjects: Technology: Electrical engineering. Electronics. Nuclear engineering
Website: https://ieeexplore.ieee.org/xpl/RecentIssue.jsp?punumber=6245494

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