NDLI: A fully CMOS-integrated pH-ISFET interface circuit

Content Provider	IEEE Xplore Digital Library
Author	Jinbao Wei Haigang Yang Hongguang Sun Zengjin Lin Shanhong Xia
Copyright Year	2005
Description	Author affiliation: Graduate Sch., Chinese Acad. of Sci., Beijing, China (Jinbao Wei)
Abstract	ISFET is a potentiometric sensor that is easily adapted for a wide range of chemical, biochemical and biomedical measurements. This article presents an ISFET sensor system-on-chip including the ISFET/REFET (reference FET) pair and ISFET/REFET amplifiers, bias current generator, as well as a reference electrode structure, all integrated on the same chip based on CMOS technology. The sensor chip is fabricated in a standard 0.35/spl mu/m 4-metal and 2-poly layer CMOS process (chartered semiconductor) to which extra post processing steps are added for depositing membranes. The chip operates at 3.3V and the total die area is 5 mm. Finally the performance of the integrated sensor interface circuit is measured and analyzed.
Starting Page	365
Ending Page	367
File Size	1586958
Page Count	3
File Format	PDF
ISBN	0780392108
DOI	10.1109/ICASIC.2005.1611338
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2005-10-24
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Circuits Chemical and biological sensors Biosensors Biomedical measurements CMOS technology Chemical sensors Sensor systems System-on-a-chip FETs Biomedical electrodes System-on-Chip ISFET Sensor Interface Circuit Microsensor System Integration
Content Type	Text
Resource Type	Article

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