Title :
Input common-mode feedback technique for very low voltage CMOS amplifiers
Author :
Duque-Carrillo, J.F. ; Ausin, J.L. ; Torelli, G. ; Carrillo, J.M. ; Merchan, P.
Author_Institution :
Dept. of Electron. & Electr. Eng., Extremadura Univ., Badajoz, Spain
Abstract :
A technique for low supply voltage CMOS amplifiers is presented. The technique shifts and attenuates the common-mode (CM) component of the signals existing at two input terminals, by means of a negative feedback loop which only acts over this CM component. It is very useful for extending the signal swing up to the rails for amplifiers operating in the total supply voltage range of 1 V and below. Some continuous-time (CT) and discrete-time (DT) applications of the technique are discussed
Keywords :
CMOS analogue integrated circuits; differential amplifiers; feedback amplifiers; low-power electronics; operational amplifiers; 1 V; 1.2 micron; LV amplifiers; continuous-time applications; discrete-time applications; input common-mode feedback technique; negative feedback loop; rail-to-rail opamp; very low voltage CMOS amplifiers; CMOS process; Circuits; Delta modulation; Differential amplifiers; Feedback; Harmonic distortion; Impedance; Low voltage; Rail to rail amplifiers; Signal processing;
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.1999.780610
