Title :
A CMOS digitally programmable class AB OTA circuit
Author :
Elwan, Hassan ; Weinan Gao ; Sadkowski, Roberto ; Ismail, Mohammed
Author_Institution :
Dept. of Electr. Eng., Ohio State Univ., Columbus, OH, USA
Abstract :
A new low voltage digitally programmable operational transconductance amplifier (OTA) circuit is presented. The circuit utilizes a novel class AB buffer to provide a nonslew rate-limited performance with low stand-by power consumption. The transconductance of the OTA can be digitally programmed over a wide range independently of the stand-by power. The OTA can be programmed to achieve a constant settling time for different load capacitors. Experimental results from a 1.2 μm chip are presented.
Keywords :
CMOS analogue integrated circuits; buffer circuits; integrated circuit design; integrated circuit measurement; low-power electronics; microprogramming; operational amplifiers; programmable circuits; 1.2 micron; CMOS digitally programmable class AB OTA circuit; OTA; OTA circuit; chip measurement; class AB buffer; constant settling time; digital programming; load capacitors; low voltage digitally programmable operational transconductance amplifier; nonslew rate-limited performance; stand-by power; stand-by power consumption; transconductance; CMOS digital integrated circuits; Capacitance; Communication switching; Energy consumption; Filters; Low voltage; Operational amplifiers; Resistors; Switched capacitor circuits; Transconductance;
Conference_Titel :
Microelectronics, 1999. ICM '99. The Eleventh International Conference on
Print_ISBN :
0-7803-6643-3
DOI :
10.1109/ICM.2000.884803
