A Noble Track-and-Hold Amplifier with 10-b 120-MS/s

Author

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

Author_Institution

LG R&D Center, Seoul

fYear

2007

fDate

26-28 Sept. 2007

Firstpage

285

Lastpage

288

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 0.18 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 integrated circuits; operational amplifiers; CMOS process; cross-coupled differential pairs; high-accuracy application; high-frequency application; lower power dissipation; operational transconductance amplifier; size 0.18 mum; track-and-hold amplifier; voltage 1.8 V; word length 10 bit; Bandwidth; CMOS technology; Capacitors; Circuits; Communication switching; Operational amplifiers; Power dissipation; Sampling methods; Switches; Transconductance;

fLanguage

English

Publisher

ieee

Conference_Titel

Integrated Circuits, 2007. ISIC '07. International Symposium on

Conference_Location

Singapore

Print_ISBN

978-1-4244-0797-2

Electronic_ISBN

978-1-4244-0797-2

Type

conf

DOI

10.1109/ISICIR.2007.4441854

Filename

4441854