A7.4 - Offset Tracing in Hall Sensors by Integrated Temperature Coefficient Determination

Markus Stahl-Offergeld, Daniel Cichon, Hans-Peter Hohe & Andreas Schuetze
Hall sensors in CMOS technologies are ever present. Modern sensors are able to measure all three orthogonal components of the magnetic flux density at approximately one point. Unfortunately Hall sensors have comparative high offsets, but there are a number of known techniques to reduce the offset. The best known are the spinning current technique and orthogonal coupling. Using these methods reduces the offset by several magnitudes, but a residual offset always remains. Additionally, this residual...