Title :
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
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;
Conference_Titel :
Electrical and Computer Engineering, 2004. Canadian Conference on
Print_ISBN :
0-7803-8253-6
DOI :
10.1109/CCECE.2004.1349760
