A fully monolithic integrated anisotropic magnetoresistance based angle sensor for automotive

Author

Witschnig, H. ; Morici, A. ; Schaffer, B. ; Zimmer, Johannes

Author_Institution

Infineon Technol. Austria AG - Sense & Control, Villach, Austria

fYear

2013

fDate

16-20 June 2013

Firstpage

2257

Lastpage

2260

Abstract

This paper presents an automotive qualified, fully integrated AMR based sensor to enable contactless angle/position detection by means of rotating magnetic fields. The sensor provides amplified, as well as amplitude and offset compensated sinusoidal and co-sinusoidal components of the angle as differential analog voltages. The sensor allows achieving an angle error of 0.1° at room temperature as well as an overall angle error over temperature of less than 0.9° - representing a step ahead in performance of AMR angle sensors. The architecture of the sensor IC and its measurements are shown.

Keywords

angular measurement; automobiles; automotive electronics; detector circuits; enhanced magnetoresistance; integrated circuits; magnetoresistive devices; position measurement; readout electronics; sensors; anisotropic magnetoresistance based angle sensor automotive angle sensor; contactless angle detection; fully integrated AMR based sensor; integrated magnetoresistance based angle sensor; monolithic magnetoresistance based angle sensor; position detection; rotating magnetic field; sensor IC; Bridge circuits; Integrated circuits; Magnetic field measurement; Magnetic fields; Temperature measurement; Temperature sensors; Angle Sensors; Anisotropic Magnetoresistance; Automotive; Compensation; Integrated Sensors; Magnetic Sensors;

fLanguage

English

Publisher

ieee

Conference_Titel

Solid-State Sensors, Actuators and Microsystems (TRANSDUCERS & EUROSENSORS XXVII), 2013 Transducers & Eurosensors XXVII: The 17th International Conference on

Conference_Location

Barcelona

Type

conf

DOI

10.1109/Transducers.2013.6627254

Filename

6627254