Interface circuit for metal-oxide gas sensor

Author

Ruedi, P.-F. ; Heim, P. ; Mortara, Alessandro ; Franzi, E. ; Oguey, H. ; Arreguit, X.

Author_Institution

Centre Suisse d´´Electronique et de Microtechnique SA, Neuchatel, Switzerland

fYear

2001

fDate

2001

Firstpage

109

Lastpage

112

Abstract

This paper describes a sensor interface for metal-oxide chemical gas sensor for pollution detection. The function of the ASIC is to control the sensor working temperature by applying a programmable voltage with 10 bit resolution, to measure the resistance of the sensitive elements ranging from 5 kΩ to 100 MΩ, measure the ambient temperature with an external NTC thermistor and offer a fully digital user interface. It gives the possibility to make low power and low cost high performance gas sensing microsystems for consumer application

Keywords

air pollution measurement; application specific integrated circuits; consumer electronics; gas sensors; low-power electronics; thermistors; 10 kohm to 100 Mohm; ambient temperature; consumer application; external NTC thermistor; fully digital user interface; low power electronics; metal-oxide gas sensor; pollution detection; programmable voltage; sensitive elements; sensor working temperature; Application specific integrated circuits; Chemical sensors; Electrical resistance measurement; Gas detectors; Pollution measurement; Sensor phenomena and characterization; Temperature control; Temperature distribution; Temperature measurement; Temperature sensors;

fLanguage

English

Publisher

ieee

Conference_Titel

Custom Integrated Circuits, 2001, IEEE Conference on.

Conference_Location

San Diego, CA

Print_ISBN

0-7803-6591-7

Type

conf

DOI

10.1109/CICC.2001.929735

Filename

929735