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

A low-voltage current-mode instrumentation amplifier designed in a 0.18 /spl mu/m 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...

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Bibliographic Details
Main Authors: Douglas, E.L., Lovely, D.F., Luke, D.M.
Format: Conference Proceeding
Language:English
Subjects:
Application software
Biomedical measurements
CMOS process
CMOS technology
Fabrication
Geometry
Instruments
Mirrors
Resistors
Transconductance
Online Access:Request full text
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Summary:A low-voltage current-mode instrumentation amplifier designed in a 0.18 /spl mu/m 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.
ISSN:0840-7789
2576-7046
DOI:10.1109/CCECE.2004.1349760