The AS5410 allows absolute position sensing of a simple two-pole magnet immediately after starting up the device without the need for a prior reference run within the application. Position sensing is possible over large mechanical travel distances even with small magnets: a travel distance of 40 mm does not pose a problem for a small, 4 x 4 x 3 mm sized NeFeB magnet, for example. Moreover, the 3D Hall solution’s output remains stable even when the device is subject to external stray magnetic fields.
The feature is a worldwide first and the result of a special differential measurement technique including several 3D Hall sensor elements. Programming the internal EEPROM of the AS5410 allows to convert a wide range of geometries including curved movements, non-linear scales, and tilted chip/magnet geometries into a linear output signal. In order to achieve a perfectly linearized output (up to 0.5% accuracy), the AS5410 linear position sensor provides an internal linearization table with 33 base points. With four preset basic operating modes which are selectable via SPI, the austriamicrosystems AS5410 3D Hall encoder offers quick and easy configuration. All signal conditioning is on chip, including compensation for temperature effects.
A portfolio of 3D Hall encoder products is being developed to operate up to 150°C and from a supply up to 18 V.
The sensor solution is being demonstrated during SENSOR+TEST 2011, June 7-9, 2011 in Nuremberg, Germany, at Booth #528, Hall 12.
Availability and Pricing
The AS5410 3D Hall sensor is sampling now. Production quantities will be available in Q3. Pricing starts at $ 3.75 in 1000 piece quantities.
A demonstration board for the AS5410 3D Hall magnetic encoder is available.
More information about the AS5410 and the AS540x series at
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