Title :
A circuit for the temperature compensation of capacitive sensors
Author :
Grigorie, Mihaela ; de Raad Iseli, Christina ; Krummenacher, François ; Enz, Christian
Author_Institution :
Electron. Lab., Swiss Federal Inst. of Technol., Lausanne, Switzerland
Abstract :
A voltage reference which yields a voltage proportional to a reference voltage (VREF) and relative temperature (ΔT) is presented. The application, typically the interfacing of sensors whose output signal is proportional to VREF, is described. The principle of the voltage reference is presented as an arithmetic combination of temperature dependent sources and of a reference dependent source. The description of the realization of the main blocks is followed by the simulation results. The expected precision of the temperature measurement is better than 1°C, for VREF variations of ±10% around its nominal value
Keywords :
capacitance measurement; compensation; reference circuits; temperature measurement; temperature sensors; capacitive sensor; interface; simulation; temperature compensation circuit; temperature measurement; voltage reference; Capacitive sensors; Capacitors; Circuits; Magnetic sensors; Sensor phenomena and characterization; Temperature dependence; Temperature distribution; Temperature measurement; Temperature sensors; Voltage;
Conference_Titel :
Circuits and Systems, 1996. ISCAS '96., Connecting the World., 1996 IEEE International Symposium on
Conference_Location :
Atlanta, GA
Print_ISBN :
0-7803-3073-0
DOI :
10.1109/ISCAS.1996.539909
