DocumentCode :
3519143
Title :
Low-voltage CMOS analog switch for high precision sample-and-hold circuit
Author :
Fayomi, Christian Jesus B ; Roberts, Gordon W. ; Sawan, Mohamad
Author_Institution :
Dept. of Electr. & Comput. Eng., Ecole Polytech. de Montreal, Que., Canada
Volume :
2
fYear :
2000
fDate :
2000
Firstpage :
710
Abstract :
This paper presents a sample-and-hold circuit based on a novel implementation of the bootstrapped low-voltage analog CMOS switch. The heart of this circuit is a new low-voltage and low-stress CMOS clock voltage doubler. Through the use of a dummy switch, the charge injection induced by the bootstrapped switch is greatly reduced resulting in improved sample-and-hold accuracy. Simulation results using a 0.18 μm digital CMOS process show that a resolution greater than 16 bits can be obtained with a 1.65 V supply voltage. Operation is also possible for supply voltages close to transistor threshold (e.g., 0.5 V)
Keywords :
CMOS analogue integrated circuits; bootstrap circuits; sample and hold circuits; switching circuits; 0.18 μm; 0.18 micron; 0.5 V; 1.65 V; 1.65 supply voltage; CMOS clock voltage doubler; bootstrapped low-voltage analog switch; charge injection; dummy switch; sample-and-hold circuit; CMOS analog integrated circuits; Circuit simulation; Clocks; Conductivity; Linearity; MOSFETs; Switched capacitor circuits; Switches; Switching circuits; Voltage;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Circuits and Systems, 2000. Proceedings of the 43rd IEEE Midwest Symposium on
Conference_Location :
Lansing, MI
Print_ISBN :
0-7803-6475-9
Type :
conf
DOI :
10.1109/MWSCAS.2000.952855
Filename :
952855
Link To Document :
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