Title :
Class AB output stage for low voltage CMOS op-amps with accurate quiescent current control
Author :
Torralba, A. ; Carvajal, R.G. ; Martinez-Heredia, J. ; Ramirez-Angulo, J.
Author_Institution :
Dept. de Ingenieria Electron., Seville Univ., Spain
fDate :
10/12/2000 12:00:00 AM
Abstract :
A new class AB output stage for CMOS op-amps, with accurate quiescent and minimum current control, is proposed. The proposed stage can be operated with a supply voltage close to the threshold voltage of the transistor. A dynamic biasing scheme allows it to operate over a wide range of supply voltages. Simulation results are provided that are in good agreement with expected values
Keywords :
CMOS analogue integrated circuits; low-power electronics; operational amplifiers; class AB output stage; dynamic biasing scheme; low voltage CMOS op-amps; quiescent current control; supply voltage; supply voltages; threshold voltage;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:20001247
