Title :
1-V quasi constant-gm input/output rail-to-rail CMOS op-amp
Author :
Carrillo, Juan M. ; Duque-Carrillo, J. Francisco ; Torelli, Guido ; Ausin, Jose L.
Author_Institution :
Dept. of Electron. & Elect. Eng, Univ. de Extremadura, Badajoz, Spain
Abstract :
An input/output rail-to-rail CMOS operational amplifier with quasi constant small-signal behavior and operating with a 1-V single supply, is presented. Dynamically biased input level shifters are used to extend the amplifier input voltage range. The operation of these common-mode adapters is controlled taking the small-signal response of the amplifier input stage into account. Experimental results on a test-chip fabricated in standard 0.8-μm CMOS technology are given.
Keywords :
CMOS analogue integrated circuits; low-power electronics; operational amplifiers; 0.8 micron; 1 V; common-mode adapter; dynamic input level shifter; input/output rail-to-rail CMOS operational amplifier; low-voltage operation; quasi-constant small-signal response; voltage range; Circuit optimization; Differential amplifiers; Nonlinear circuits; Operational amplifiers; Rail to rail inputs; Rail to rail operation; Rail to rail outputs; Resistors; Signal generators; Voltage control;
Conference_Titel :
Circuits and Systems, 2003. ISCAS '03. Proceedings of the 2003 International Symposium on
Print_ISBN :
0-7803-7761-3
DOI :
10.1109/ISCAS.2003.1205554
