Switched Capacitor Sample-and-Hold Circuit with Input Signal Range beyond Supply Voltage

Author

Centurelli, Francesco ; Simonetti, Andrea ; Trifiletti, Alessandro

Author_Institution

Dept. of Electron. Eng., Univ. of Rome "La Sapienza", Rome, Italy

fYear

2008

fDate

16-17 Nov. 2008

Firstpage

75

Lastpage

78

Abstract

A switched capacitor sample-and-hold (S/H) circuit with extended dynamic range beyond the supply voltage is presented. The proposed architecture includes a gate-bootstrapped circuit and an improved flip-around S/H with two selectable configurations. Simulations in a 0.13 Â¿m CMOS technology show that the new system is capable of sampling a below-ground signal and allows an interface adapter that enhances the dynamic range of the low-voltage analog-to-digital (A/D) converters without affecting the input bandwidth.

Keywords

CMOS integrated circuits; analogue-digital conversion; sample and hold circuits; switched capacitor networks; 0.13 Â¿m CMOS technology; flip-around sample-and-hold; gate-bootstrapped circuit; input signal range beyond supply voltage; low-voltage analog-to-digital converters; switched capacitor sample-and-hold circuit; Analog-digital conversion; CMOS technology; Circuit simulation; Dynamic range; Sampling methods; Switched capacitor circuits; Switches; Switching circuits; System-on-a-chip; Voltage; Analog-to-digital converters; Gate-Bootstrapping; Low-voltage; Sample-and-hold circuits;

fLanguage

English

Publisher

ieee

Conference_Titel

NORCHIP, 2008.

Conference_Location

Tallinn

Print_ISBN

978-1-4244-2492-4

Electronic_ISBN

978-1-4244-2493-1

Type

conf

DOI

10.1109/NORCHP.2008.4738286

Filename

4738286