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

Volume

1

fYear

1996

fDate

12-15 May 1996

Firstpage

381

Abstract

A voltage reference which yields a voltage proportional to a reference voltage (V_REF) and relative temperature (ΔT) is presented. The application, typically the interfacing of sensors whose output signal is proportional to V_REF, 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 V_REF 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;

fLanguage

English

Publisher

ieee

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

Type

conf

DOI

10.1109/ISCAS.1996.539909

Filename

539909