Title :
Low power CMOS potentiostat for three electrodes amperometric chemical sensor
Author :
Boutet, Paul-Antoine ; Manen, Samuel
Author_Institution :
SVS at CAP, Orleat, France
fDate :
May 30 2011-June 1 2011
Abstract :
This paper presents two front-end electronics architectures, called potentiostats, developed for measuring gas concentrations with electro-chemical sensors. These potentiostats are designed to be integrated in wireless embedded systems. Consequently, the total power consumption is critical. An amperometric three-electrodes electro-chemical sensor has been chosen since it is powerless. Its electrical model has been determined in order to optimize the readout electronics associated. Two potentiostats have been realized in a 0.35μm CMOS process. The most power consumption optimized architecture designed in this work presents a consumption of 10.8μW over a range of detection included from 70nA to 25μA.
Keywords :
CMOS integrated circuits; amperometric sensors; cathodes; chemical variables measurement; gas sensors; low-power electronics; readout electronics; CMOS process; amperometric three electrode electrochemical sensor; current 70 nA to 25 muA; electrical model; front-end electronics architecture; gas concentration measuring; low power CMOS potentiostat; power 10.8 muW; readout electronics; total power consumption; wireless embedded system; Computer architecture; Electric potential; Electrodes; Mirrors; Power demand; Sensors; Amperometric; CMOS; gas sensor; low power; potentiostat;
Conference_Titel :
Faible Tension Faible Consommation (FTFC), 2011
Conference_Location :
Marrakech
Print_ISBN :
978-1-61284-646-0
DOI :
10.1109/FTFC.2011.5948906
