Title :
A Microconductometer Utilizing Bipolar Pulse Method for Electro-Chemical Sensors
Author :
Fujcik, L. ; Vrba, R. ; Prokop, R. ; Hubalek, J. ; Steffan, P. ; Hornochova, H.
Author_Institution :
Dept. of Microelectron., BUT Brno, Brno
Abstract :
The microelectronic measuring system for conductivity electro-chemical sensor measurement of liquid materials properties was designed in AMIS CMOS 0.7 mum technology. The main parts of the system are current source with switchable subranges, the sensor switches allowing change of the current polarity in compliance with the bipolar pulse method, which was developed specially for this measurement purposes at the Dept. of Microelectronics. The most important part of the system is a sensor voltage drop measuring circuit using opamp´s offset switched compensation.
Keywords :
CMOS integrated circuits; electrical conductivity measurement; electrochemical sensors; microsensors; operational amplifiers; AMIS CMOS technology; bipolar pulse method; electrochemical sensor measurement; liquid material properties; microconductometer; microelectronic measuring system; opamp offset switched compensation; sensor switches; sensor voltage drop measuring circuit; Ambient intelligence; CMOS technology; Conductivity measurement; Current measurement; Material properties; Microelectronics; Pulse measurements; Sensor systems; Switches; Voltage; mixed analog-digital integrated circuits;
Conference_Titel :
Systems, 2008. ICONS 08. Third International Conference on
Conference_Location :
Cancun
Print_ISBN :
978-0-7695-3105-2
Electronic_ISBN :
978-0-7695-3105-2
DOI :
10.1109/ICONS.2008.59
