Title :
A low voltage CMOS class AB operational transconductance amplifier
Author :
Elwan, Hassan ; Gao, Weinan ; Sadkowski, Roberto ; Ismail, Mohammed
Author_Institution :
Dept. of Electr. Eng., Ohio State Univ., Columbus, OH, USA
Abstract :
This paper presents a new low voltage class-AB operational transconductance amplifier (OTA). A low impedance buffering circuit is employed to provide an accurate voltage level shift for low-noise class-AB operation and to enable operation from a supply voltage down to 1.5 V. The proposed OTA can achieve a fast settling time which is not slew-rate limited at a low quiescent current when driving large capacitive loads
Keywords :
CMOS analogue integrated circuits; buffer circuits; low-power electronics; operational amplifiers; 1.5 V; CMOS; capacitive loads; class AB operational transconductance amplifier; low impedance buffering circuit; low voltage circuits; quiescent current; settling time; voltage level shift; Capacitors; Circuits; Energy consumption; Impedance; Instruments; Low voltage; Operational amplifiers; Power dissipation; Tail; Transconductance;
Conference_Titel :
Circuits and Systems, 1999. ISCAS '99. Proceedings of the 1999 IEEE International Symposium on
Conference_Location :
Orlando, FL
Print_ISBN :
0-7803-5471-0
DOI :
10.1109/ISCAS.1999.780844
