Title :
Offset reduction in Hall devices by continuous spinning current method
Author :
Steiner, R. ; Häberli, A. ; Steiner, E-P ; Baltes, H.
Author_Institution :
Phys. Electron. Lab., Eidgenossische Tech. Hochschule, Zurich, Switzerland
Abstract :
A novel method for dynamic offset compensation in a Hall plate is repeated. A continuous spinning current vector is generated in device by spatially superimposing two orthogonal harmonic biasing currents. The resulting voltages allow to separate the constant Hall voltage from the periodic offset voltage. Remaining offsets corresponding to fractions of the Earth magnetic field are achieved
Keywords :
CMOS integrated circuits; Hall effect devices; magnetic sensors; measurement errors; 10 muT; Earth magnetic field; Hall devices; Hall plate; continuous spinning current method; continuous spinning current vector; dynamic offset compensation; orthogonal harmonic biasing current; periodic offset voltage; remaining offsets; CMOS technology; Earth; Laboratories; Magnetic field measurement; Magnetic sensors; Magnetic separation; Piezoresistance; Spinning; Temperature sensors; Voltage;
Conference_Titel :
Solid State Sensors and Actuators, 1997. TRANSDUCERS '97 Chicago., 1997 International Conference on
Conference_Location :
Chicago, IL
Print_ISBN :
0-7803-3829-4
DOI :
10.1109/SENSOR.1997.613664
