A fully integrated CMOS Hall sensor with a 3.65 /spl mu/T 3/spl sigma/ offset for compass applications

@article{Meer2005AFI,
  title={A fully integrated CMOS Hall sensor with a 3.65 /spl mu/T 3/spl sigma/ offset for compass applications},
  author={J. C. van der Meer and F. Riedijk and E. A. van Kampen and K. Makinwa and J. H. Huijsing},
  journal={ISSCC. 2005 IEEE International Digest of Technical Papers. Solid-State Circuits Conference, 2005.},
  year={2005},
  pages={246-247 Vol. 1}
}
A fully-integrated CMOS Hall sensor suitable for use in compass applications has a 3/spl sigma/ offset spread less than 4.5 /spl mu/T. After artificial aging it drifts less than 250 nT. Using two such sensors, a fully integrated electronically calibrated compass with a stability of 0.5/spl deg/ is realized. The sensor has an analog PWM and a digital RS232/SPI//spl mu/wire interface. 
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