Title :
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
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;
Conference_Titel :
Custom Integrated Circuits, 2001, IEEE Conference on.
Conference_Location :
San Diego, CA
Print_ISBN :
0-7803-6591-7
DOI :
10.1109/CICC.2001.929735
