Title :
A Low Distortion Highly Stable Class AB Output Stage for Monolithic Power Amplifiers
Author :
Seevinck, E. ; de Jager, W. ; Buitendijk, P.
Author_Institution :
Faculty of Electrical Engineering, Twente University, P.O. Box 217, 7500 AE Enschede, The Netherlands; Philips Research Labs., P.O. Box 80.000, Eindhoven, The Netherlands.
Abstract :
A new low distortion, highly stable class AB output stage intended for monolithic power amplifiers is described. High linearity is obtained through use of a new technique of class AB biasing combined with local feedback. Stability is improved by eliminating the customary quasi-PNP structure and the application of high-frequency feedforward. Measured THD is around -80 dB at 20 kHz.
Keywords :
Capacitors; Circuit stability; Current measurement; Distortion measurement; Error compensation; Feedback; High power amplifiers; Linearity; Open loop systems; Power generation;
Conference_Titel :
Solid-state Circuits Conference, 1987. ESSCIRC '87. 13th European
Conference_Location :
Taunus-Tagungs-Zentrum, F.R. Germany
