An approach to fully differential circuit design without common-mode feedback

Author

Walker, Paul D. ; Green, Michael M.

Author_Institution

Dept. of Electr. Eng., State Univ. of New York, Stony Brook, NY, USA

Volume

43

Issue

11

fYear

1996

fDate

11/1/1996 12:00:00 AM

Firstpage

752

Lastpage

762

Abstract

Fully differential transconductance structures allow for greater linearity than their single-ended counterparts. The disadvantage is the need for common-mode feedback circuitry, which complicates the design and introduces additional design problems and constraints. In this paper we present and analyze a new technique for designing fully differential transconductance structures which removes the need for common-mode feedback by instead forming two independent nonlinear transconductance blocks, each of whose common-mode output voltage is well defined by the differential feedback

Keywords

analogue integrated circuits; differential amplifiers; electric distortion; integrated circuit design; analogue ICs; common-mode output voltage; design problems; fully differential circuit design; independent nonlinear transconductance blocks; transconductance structures; Circuit synthesis; Feedback circuits; Feedback loop; Frequency; Linearity; MOSFETs; Mirrors; Output feedback; Transconductance; Voltage;

fLanguage

English

Journal_Title

Circuits and Systems II: Analog and Digital Signal Processing, IEEE Transactions on

Publisher

ieee

ISSN

1057-7130

Type

jour

DOI

10.1109/82.544028

Filename

544028