A Simple and Accurate Track-and-Hold Circuit Using Operational Transconductance Amplifier

Author

Seon, Jong-Kug ; Nam, Kyung-Hoon ; Kang, Sung-Hee ; Bae, Kyu-Sung ; Kim, Jong-Bae

Author_Institution

LG Ind. Syst., Seoul

Volume

1

fYear

2007

fDate

13-14 July 2007

Firstpage

1

Lastpage

4

Abstract

A novel track-and-hold (T&H) employing an operational transconductance amplifier (OTA) with two cross-coupled differential pairs (CCDPs) is proposed for high-accuracy and high-frequency applications. The T&H has a simple architecture requiring smaller capacitors and fewer switches and offers higher speed, lower distortion, and lower power dissipation than its op-amp based counterparts. The chip implemented in 0.35 um CMOS process operates from a single 1.8 V supply and achieves more than 10-bits precision for sampling rate in excess of 120 MS/s.

Keywords

CMOS analogue integrated circuits; low-power electronics; operational amplifiers; sample and hold circuits; CMOS; cross-coupled differential pair; low power dissipation; operational transconductance amplifier; size 0.35 mum; track-and-hold circuit; voltage 1.8 V; Bandwidth; CMOS technology; Capacitors; Differential amplifiers; Energy consumption; Operational amplifiers; Sampling methods; Switches; Switching circuits; Transconductance;

fLanguage

English

Publisher

ieee

Conference_Titel

Signals, Circuits and Systems, 2007. ISSCS 2007. International Symposium on

Conference_Location

Iasi

Print_ISBN

1-4244-0969-1

Electronic_ISBN

1-4244-0969-1

Type

conf

DOI

10.1109/ISSCS.2007.4292655

Filename

4292655