Robert E. Kennedy Library

Title

Apparatus, Method and System for Common-Mode Stabilization in Circuits Having Differential Operation

Author Info

George Palaskas, New York, NY
Vladimir Prodanov, New Providence, NJFollow

Recommended Citation

June 17, 2003. 14 pages. Also available from the United States Patent and Trademark Office. Website: http://www.uspto.gov.

NOTE: At the time of publication, the author Vladimir Prodanov was not yet affiliated with Cal Poly.

Abstract

A system, method and apparatus are disclosed for common-mode voltage feedback. The preferred system includes a plurality of differential circuits, a corresponding plurality of common-mode voltage detectors, a corresponding plurality of buffer circuits, and a common-mode control circuit. Each differential circuit is operative to produce a first differential output voltage and a second differential output voltage. Each corresponding common-mode voltage detector is operative to provide a common-mode voltage from the first differential output voltage and the second differential output voltage. The common-mode control circuit provides a control voltage signal from the common-mode voltage and from a reference voltage. Each buffer circuit is operative to adjust the corresponding common-mode voltage using the control voltage signal to provide a common-mode feedback voltage signal to the corresponding differential circuit.

Disciplines

Electrical and Computer Engineering