Comparative Study of Amplifiers with High-Frequency and Low-Frequency Chopping

Wenshuo Zhu; Wei Fu; Yuan Gao

10.1109/ISCAS46773.2023.10181957

2023

IEEE International Symposium on Circuits and Systems (ISCAS)

0271-4302

978-1-6654-5110-9

2023 IEEE International Symposium on Circuits and Systems (ISCAS)

2023-May

1-4

21-25 May 2023

Monterey, CA, USA

This paper presents a comparative study of high-frequency chopping and low-frequency chopping. Several key parameters of a chopper-stabilized amplifier are analyzed in detail. To verify the effect of chopping frequency, a general-purpose chopper-stabilized amplifier is designed and implemented with a $0.18-\mu \mathrm{m}$ CMOS process. Simulations show that the input biasing current, thermal noise level, and input offset voltage are all related to the chopping frequency.

Operational Amplifiers Chopper-stabilization Class-AB Charge Injection Low-noise

第一 ; 通讯

CPCI-S ; EI

WOS:001038214602062

20233314552255

Chopper amplifiers ; Choppers (circuits) ; High frequency amplifiers ; Power amplifiers

Amplifiers:713.1

IEEE

School of Microelectronics, Southern University of Science and Technology, Shenzhen, China

Wenshuo Zhu,Wei Fu,Yuan Gao. Comparative Study of Amplifiers with High-Frequency and Low-Frequency Chopping[C],2023:1-4.