A chopped Hall sensor with small jitter and programmable "True Power-on" function

@article{Motz2005ACH,
  title={A chopped Hall sensor with small jitter and programmable "True Power-on" function},
  author={Mario Motz and Dieter Draxelmayr and Teresa N Werth and Bruce Forster},
  journal={IEEE Journal of Solid-State Circuits},
  year={2005},
  volume={40},
  pages={1533-1540}
}
A chopped Hall sensor for camshaft applications is presented which provides a programmable "True Power-on" switching level effective after the power-up phase. The proposed chopping technique and self-compensation methods for temperature drift and technology spread provide a correct output state immediately after power-on even at zero speed of the target wheel. The circuits improve the magnetic offsets from 5 to 10 mT to below 200 /spl mu/T in a bandwidth of 30 kHz and stabilize the spread of… CONTINUE READING

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