Design of A Low-power Precision Op Amp with Ping-pong Autozero Architecture

Author

Pengfei Xi, University of Tennessee - Knoxville

Date of Award

12-2008

Degree Type

Thesis

Degree Name

Master of Science

Major

Electrical Engineering

Major Professor

Benjamin Blalock

Committee Members

Syed Islam, Ethan Farquhar

Abstract

Precision op amps are widely used in instrumentation, automotive, and industrial applications. This thesis presents the design and characterization of a low-power precision operational amplifier that uses “ping-pong” autozero architecture for automatic offset correction. The op amp is designed for extreme environment applications, operating across a wide temperature range (minus 180 degree Celsius to plus 120 degree Celsius) with low offset, low drift and low power consumption. This design has been fabricated in a SiGe BiCMOS 0.5-micron process and the measured results demonstrate that the op amp is fully functional and achieves less than 40 microvolt input-referred offset voltage with 0.1 microvolt per degree offset voltage drift and 1 microwatt power consumption.

Recommended Citation

Xi, Pengfei, "Design of A Low-power Precision Op Amp with Ping-pong Autozero Architecture. " Master's Thesis, University of Tennessee, 2008.
https://trace.tennessee.edu/utk_gradthes/499