Smart Interface Circuit to Ameliorate Loss of Measurement Range in Chemical Microsensor Arrays

Author

Koickal, Thomas Jacob ; Hamilton, Alister ; Tan, Su L. ; Covington, James ; Gardner, JulianW ; Pearce, Tim

Author_Institution

Sch. of Eng. & Electron., Edinburgh Univ.

Volume

1

fYear

2005

fDate

16-19 May 2005

Firstpage

548

Lastpage

550

Abstract

A programmable analog sensor interface integrated with an array of heterogeneous chemical FET/resistive sensors is presented. The sensory interface primarily addresses the problem of loss of measurement range due to large variations in baseline signals among sensors in the array. A circuit is proposed to cancel the baseline signals in the sensor array leading to improved measurement resolution. An integrated sensory array and interface electronics chip is fabricated and tested to perform odour analysis

Keywords

chemical sensors; microsensors; programmable circuits; analog sensor interface; baseline signal cancellation; chemical microsensor arrays; heterogeneous chemical FET; integrated sensory array; interface electronics chip; odour analysis; programmable sensor interface; resistive sensors; smart interface circuit; Chemical sensors; Electronic equipment testing; FETs; Integrated circuit measurements; Intelligent sensors; Loss measurement; Microsensors; Semiconductor device measurement; Sensor arrays; Signal resolution; chemical sensors; d.c cancellation; measurement range; odour analysis; sensor interface;

fLanguage

English

Publisher

ieee

Conference_Titel

Instrumentation and Measurement Technology Conference, 2005. IMTC 2005. Proceedings of the IEEE

Conference_Location

Ottawa, Ont.

Print_ISBN

0-7803-8879-8

Type

conf

DOI

10.1109/IMTC.2005.1604176

Filename

1604176