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

Volume

2

fYear

1999

fDate

36342

Firstpage

25

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;

fLanguage

English

Publisher

ieee

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

Type

conf

DOI

10.1109/ISCAS.1999.780610

Filename

780610