Fraunhofer-Gesellschaft

Publica

Hier finden Sie wissenschaftliche Publikationen aus den Fraunhofer-Instituten.

A novel readout technique for capacitive gas sensors

 

Transducers '89. 5th International Conference on Solid-State Sensors and Actuators. Digest of technical papers
1989
pp.10-12
International Conference on Solid-State Sensors and Actuators <5, 1989, Montreux>
English
Conference Paper
Fraunhofer IMS ()
gassensor; Readout electronic; Switch capacitor circuit

Abstract
In this communication we propose a novel readout technique for capacitive gas sensors. It uses periodically operated analog switches together with capacitors and operational amplifiers. These components are available in today standard MOS and CMOS VLSI technologies and are, therefore, fully compatible with digital circuits. The technique provides not only sensor interfacing and signal amplification but it offers posibility to cancel offset and cross-sensitivity as well. At the same time, the long-time DC-drift has been eliminated.

: http://publica.fraunhofer.de/documents/PX-26596.html