A Tunable Analog Conditioning Circuit Applied to Magnetoresistive Sensors

Author

Medrano-Marqués, Nicolás J. ; Zatorre-Navarro, G. ; Celma-Pueyo, S.

Author_Institution

Zaragoza Univ., Zaragoza

Volume

55

Issue

2

fYear

2008

Firstpage

966

Lastpage

969

Abstract

This paper presents an adaptive processing system based on analog-digital circuits to extend the linear range of angular position sensors compensating the temperature-dependent drift. System-level simulations give a sensor output improvement higher than 70%, which drastically reduces deviations due to temperature. The building block architecture characteristics make these circuits suitable for implementing the ldquosmartnessrdquo part of smart sensors in embedded systems.

Keywords

adaptive signal processing; circuit tuning; electric sensing devices; magnetoresistive devices; mixed analogue-digital integrated circuits; signal processing equipment; adaptive processing system; analog-digital circuits; embedded systems; magnetoresistive sensors; tunable analog conditioning circuit; Adaptive systems; Analog-digital conversion; Intelligent sensors; Magnetic circuits; Magnetic sensors; Magnetoresistance; Sensor phenomena and characterization; Sensor systems; Temperature sensors; Tunable circuits and devices; Adaptive signal processing; Sensor conditioning; adaptive signal processing; magnetoresistive devices; mixed analog–digital integrated circuits; mixed analog-digital integrated circuits; neural network hardware; sensor conditioning;

fLanguage

English

Journal_Title

Industrial Electronics, IEEE Transactions on

Publisher

ieee

ISSN

0278-0046

Type

jour

DOI

10.1109/TIE.2007.896555

Filename

4401154