A high gain operational amplifier based on current-reuse structure

Hongsheng Liao; Yongqiang Chen; Liyou Liu; Jiangping He

doi:10.1117/12.3030711

5 June 2024 A high gain operational amplifier based on current-reuse structure

Hongsheng Liao, Yongqiang Chen, Liyou Liu, Jiangping He

Proceedings Volume 13163, Fourth International Conference on Mechanical, Electronics, and Electrical and Automation Control (METMS 2024); 131638L (2024) https://doi.org/10.1117/12.3030711
Event: International Conference on Mechanical, Electronics, and Electrical and Automation Control (METMS 2024), 2024, Xi'an, China

Abstract

Based on the current-reuse operational amplifier structure, a high-gain operational amplifier is designed using Gain-boosting technology. The operational amplifier employs a current-reuse structure and Gain-boosting technology, enhancing both transconductance and output impedance, resulting in an increased overall gain. Fabricated using a 0.18μm CMOS process, the operational amplifier's circuit model is constructed in Cadence software and validated through simulation. The low-frequency gain of the operational amplifier is measured at 116dB, with a GBW of 2MHz and a power consumption of 51.5μW. Simulation results demonstrate a significant improvement in gain compared to conventional cascode operational amplifiers.

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Hongsheng Liao, Yongqiang Chen, Liyou Liu, and Jiangping He "A high gain operational amplifier based on current-reuse structure", Proc. SPIE 13163, Fourth International Conference on Mechanical, Electronics, and Electrical and Automation Control (METMS 2024), 131638L (5 June 2024); https://doi.org/10.1117/12.3030711

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