Am improved tail current source for low voltage applications

Author

You, Fan ; Embabi, Sherif H K ; Duque-Carrillo, J. Francisco ; Sánchez-Sinencio, Edgar

Author_Institution

Dept. of Electr. Eng., Texas A&M Univ., College Station, TX, USA

Volume

32

Issue

8

fYear

1997

fDate

8/1/1997 12:00:00 AM

Firstpage

1173

Lastpage

1180

Abstract

A new current source for low-voltage applications is proposed. This current source is well suited for biasing differential pairs and source followers. Measured compliance voltage is slightly smaller than that of a single transistor. Its output resistance is a factor of 25 larger than that of a single transistor current source and was measured to be 8 MΩ. The use of the new current source improves the common-mode input range and the common-mode rejection ratio of fully balanced and single-ended differential amplifiers

Keywords

analogue circuits; constant current sources; differential amplifiers; linear network analysis; 8 Mohm; CMRR; LV operation; common-mode input range; common-mode rejection ratio; differential pair biasing; fully balanced differential amplifiers; low voltage applications; single-ended differential amplifiers; source follower biasing; tail current source; Analog circuits; Circuit topology; Current measurement; Differential amplifiers; Electrical resistance measurement; Helium; Low voltage; Noise level; Tail; Voltage measurement;

fLanguage

English

Journal_Title

Solid-State Circuits, IEEE Journal of

Publisher

ieee

ISSN

0018-9200

Type

jour

DOI

10.1109/4.604073

Filename

604073