학술논문
A Simple and Accurate Track-and-Hold Circuit using Operational Transconductance Amplifier
Document Type
Conference
Author
Source
2007 14th International Conference on Mixed Design of Integrated Circuits and Systems Mixed Design of Integrated Circuits and Systems, 2007. MIXDES '07. 14th International Conference on. :215-218 Jun, 2007
Subject
Language
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.