A low-voltage current-mode instrumentation amplifier designed in a 0.18-micron CMOS technology

Author

Douglas, E.L. ; Lovely, D.F. ; Luke, D.M.

Author_Institution

Dept. of Electr. & Comput. Eng., New Brunswick Univ., Fredericton, NB, Canada

Volume

3

fYear

2004

Firstpage

1777

Abstract

A low-voltage current-mode instrumentation amplifier designed in a 0.18 μm CMOS process for biomedical applications is presented. The low-voltage technology chosen presented several challenges. The basic design was modified to incorporate low-voltage current mirrors and native NFETs. A common-mode rejection ratio (CMRR) of 143 dB after extraction was achieved, with a differential gain of 100 V/V. Several advanced layout geometries were used to ensure proper matching between key circuit elements. The design has been submitted for fabrication to CMC to allow validation and testing.

Keywords

CMOS analogue integrated circuits; biomedical electronics; biomedical engineering; biomedical equipment; biomedical measurement; current mirrors; instrumentation amplifiers; integrated circuit layout; low-power electronics; 0.18 micron; CARR; CMOS process; CMOS technology design; bio-potentials; biomedical applications; circuit element matching; common-mode rejection ratio; design modification; design testing; design validation; differential gain; layout geometries; low-voltage current-mode instrumentation amplifier; Application software; Biomedical measurements; CMOS process; CMOS technology; Fabrication; Geometry; Instruments; Mirrors; Resistors; Transconductance;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical and Computer Engineering, 2004. Canadian Conference on

ISSN

0840-7789

Print_ISBN

0-7803-8253-6

Type

conf

DOI

10.1109/CCECE.2004.1349760

Filename

1349760