Rail-to-Rail High Gain Telescopic Operational Amplifier Using Positive Feedback Technique

Gil Su Kim, Hoon Jae Ki, Meejoung Kim, Soo Won Kim

Abstract

A CMOS very high DC-gain telescopic amplifier that uses internal positive feedback technique is presented. The structure of considered amplifier is consisted of rail-to-rail output swing and very high DC-gain. Simulation results predict a DC-gain can be achieved larger than 100 dB without limiting the output swing. The proposed amplifier is applied to sample and hold circuit for 10bits 100 Ms/s ADC.

Keywords

Positive feedback, Amplifier, Telescopic, Output swing, high DC-gain, Bandwidth

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IMEKO-IWADC-2003-24.pdf

DOI

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IMEKO TC

TC4 - Measurement of Electrical Quantities

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