Title :
Low-voltage class AB buffers with quiescent current control
Author :
You, Fan ; Embabi, S.H.K. ; Sánchez-Sinencio, Edgar
Author_Institution :
Dept. of Electr. Eng., Texas A&M Univ., College Station, TX, USA
fDate :
6/1/1998 12:00:00 AM
Abstract :
This paper presents a simple class AB buffer which is suitable for low-voltage (1.5 V) applications. The proposed buffer uses an adaptive load to reduce the sensitivity of the quiescent current to the process variation. The main feature of this scheme is its simplicity. The circuit was fabricated in a 2.0 μm digital CMOS process. Experimental results demonstrate that the buffer can operate with a supply voltage below 2 V, and it has the capability to drive small resistive loads
Keywords :
CMOS analogue integrated circuits; buffer circuits; electric current control; operational amplifiers; 1.5 to 2 V; 2 micron; CMOS process; LV class AB buffers; adaptive load; low-voltage applications; op amp output stage; quiescent current control; resistive loads; CMOS process; Current control; Energy consumption; Feedback circuits; Feedback control; Impedance; Operational amplifiers; Power conversion; Power supplies; Voltage;
Journal_Title :
Solid-State Circuits, IEEE Journal of
