Title
Low-leakage analog switches for low-speed sample-and-hold circuits.
Abstract
In this paper, two leakage-combating analog switches for low-speed sample-and-hold (S/H) circuits are proposed. In conventional low-leakage switch, the potential drop along MOSFET is clamped to zero to suppress sub-threshold leakage. Based on this switch, the proposed leakage-combating analog switches can suppress p-n junction reverse-biased leakage by clamping the potential drop along parasitic p-n junction to zero. The proposed two switches are designed and fabricated with a 0.13 μm CMOS process in a prototype chip. The experiment results illustrate that the order of magnitude of the leakages from the proposed two switches only change from 10−15 A to 10−12 A in the temperature range from −20 °C to 120 °C, which is many times lower than that of the traditional switch. FFT simulations of the S/H circuits using the proposed switches are performed. On the condition of 0.01 kS/s and 100 °C, the THDs of the S/H circuits with these proposed switches are −53.98 dB, −61.09 dB respectively. The proposed switches are suitably applied in low-speed S/H circuits.
Year
DOI
Venue
2018
10.1016/j.mejo.2018.04.008
Microelectronics Journal
Keywords
Field
DocType
Analog switch,Low leakage,Low speed,Sample-and-hold (S/H) circuit
Clamping,Leakage (electronics),Voltage drop,Chip,Electronic engineering,Fast Fourier transform,Engineering,Sample and hold,MOSFET,Electronic circuit
Journal
Volume
ISSN
Citations 
76
0026-2692
1
PageRank 
References 
Authors
0.37
5
4
Name
Order
Citations
PageRank
Jiangtao Xu13112.56
Xiaolin Shi221.07
Zhiyuan Gao3179.39
Kaiming Nie4358.77