Circular Hall transducer for angular position sensing

We developed a new integrated magnetic sensor based on the Hall effect, suitable for contactless 360 degrees absolute angle encoding. The sensing device consists of a narrow n-well ring with a chain of 64 contacts equally distributed along the ring. It is connected to on-chip biasing and signal conditioning circuits that provides the magnitude and the phase of the in-plane component of the magnetic field. In a homogenous magnetic field, the transducer angular resolution is 0.01 degrees in the 1 kHz frequency bandwidth and the absolute accuracy is about 1 degrees and 0.1 degrees without and with output offset calibration, respectively.


Published in:
Transducers '07 & Eurosensors Xxi, Digest Of Technical Papers, Vols 1 And 2, U1305-U1306
Presented at:
14th International Conference on Solid-State Sensors, Actuators and Microsystems, Lyon, FRANCE, Jun 10-14, 2007
Year:
2007
Publisher:
Ieee Service Center, 445 Hoes Lane, Po Box 1331, Piscataway, Nj 08855-1331 Usa
ISBN:
978-1-4244-0841-2
Keywords:
Laboratories:




 Record created 2012-07-04, last modified 2018-09-13


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