Title :
An 1 V rail-rail low-power CMOS op-amp
Author :
Chen, Dingtzay ; Lin, Hongchin
Author_Institution :
Dept. of Electr. Eng., Nat. Chung-Hsing Univ., Taichung, Taiwan
fDate :
6/24/1905 12:00:00 AM
Abstract :
A rail-rail CMOS operational amplifier (op-amp) using 0.35 μm technologies for supply voltage of 1 V is proposed. The input stage is fully symmetric differential, while the regulated cascode gain stage with V/I feedback reduces the output offset. It is rail-rail at the inputs and the output with DC gain of 100 dB, CMRR of 65 dB, gain bandwidth of 1.1 MHz, and 40 μW power dissipation.
Keywords :
CMOS analogue integrated circuits; differential amplifiers; low-power electronics; operational amplifiers; 0.35 micron; 1 V; 1.1 MHz; 40 muW; CMOS operational amplifier; V/I feedback; fully symmetric differential input stage; low-power op-amp; rail-rail op-amp; regulated cascode gain stage; Bandwidth; CMOS technology; Circuits; Differential amplifiers; Low voltage; MOS devices; Operational amplifiers; Rail to rail amplifiers; Threshold voltage; Variable structure systems;
Conference_Titel :
Circuits and Systems, 2002. ISCAS 2002. IEEE International Symposium on
Print_ISBN :
0-7803-7448-7
DOI :
10.1109/ISCAS.2002.1009839
