TY - GEN
T1 - Analysis and Design of High-Speed and Low-Distortion Bootstrapped Switches
AU - Ma, Jinge
AU - Hu, Yuanqi
N1 - Publisher Copyright:
© 2022 IEEE.
PY - 2022
Y1 - 2022
N2 - Bootstrapped switches are widely applied in a variety of applications requiring high-speed and high-linearity sampling. However, the parasitic effects of switches causing distortions have not been thoroughly analysed before. In this paper three fundamental non-ideal factors have been explored, which are source-drain exchange, parasitic capacitive division and charge redistribution, and their impact has been mathematically derived respectively. It is found that both on-resistance and the bootstrapped capacitor have a quadratic (40 dB/dec) impact on the third harmonic distortion of sampled signals. Afterward, a design guideline is proposed and verified by a 2-MSPS-&-90dB-THD design case. Comprehensive simulation with various design parameters shows that our design flow could feasibly optimise the design cost without sacrificing performance and hence being constructive for designers of bootstrapped switches.
AB - Bootstrapped switches are widely applied in a variety of applications requiring high-speed and high-linearity sampling. However, the parasitic effects of switches causing distortions have not been thoroughly analysed before. In this paper three fundamental non-ideal factors have been explored, which are source-drain exchange, parasitic capacitive division and charge redistribution, and their impact has been mathematically derived respectively. It is found that both on-resistance and the bootstrapped capacitor have a quadratic (40 dB/dec) impact on the third harmonic distortion of sampled signals. Afterward, a design guideline is proposed and verified by a 2-MSPS-&-90dB-THD design case. Comprehensive simulation with various design parameters shows that our design flow could feasibly optimise the design cost without sacrificing performance and hence being constructive for designers of bootstrapped switches.
KW - analog-to-digital converters
KW - bootstrapped switch
KW - sample-and-hold
UR - https://www.scopus.com/pages/publications/85154541539
U2 - 10.1109/APCCAS55924.2022.10090277
DO - 10.1109/APCCAS55924.2022.10090277
M3 - 会议稿件
AN - SCOPUS:85154541539
T3 - APCCAS 2022 - 2022 IEEE Asia Pacific Conference on Circuits and Systems
SP - 199
EP - 203
BT - APCCAS 2022 - 2022 IEEE Asia Pacific Conference on Circuits and Systems
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2022 IEEE Asia Pacific Conference on Circuits and Systems, APCCAS 2022
Y2 - 11 November 2022 through 13 November 2022
ER -