Title :
A CMOS current feedback operational amplifier with active current mode compensation
Author :
Ho, Kin-Pui ; Chan, Cheong-Fat ; Choy, Chiu-Sing ; Pun, Kong-Pang
Author_Institution :
Dept. of Electron. Eng., Chinese Univ. of Hong Kong, Shatin, China
fDate :
6/24/1905 12:00:00 AM
Abstract :
This paper presents a two-stage current feedback operational amplifier with a 148 dbΩ transimpedance gain and a rail-to-rail output voltage swing. The amplifier is actively compensated, but without adding extra components to the basic amplifier topology. Thus, the chip area and power consumption can be kept to a minimum. In addition, a maximum gain-bandwidth product of 90 MHz can be achieved with a DC power consumption of 6.5 mW.
Keywords :
CMOS analogue integrated circuits; compensation; current-mode circuits; equivalent circuits; feedback amplifiers; linear network analysis; operational amplifiers; 6.5 mW; CMOS current feedback op amp; active current mode compensation; operational amplifier; rail-to-rail output voltage swing; small signal model; two-stage opamp; Bandwidth; Capacitance; Circuits; Impedance; Negative feedback; Operational amplifiers; Output feedback; Railway engineering; Topology; Voltage;
Conference_Titel :
Circuits and Systems, 2002. ISCAS 2002. IEEE International Symposium on
Print_ISBN :
0-7803-7448-7
DOI :
10.1109/ISCAS.2002.1009939
