The A1386 Hall effect sensor is designed to be used in automotive applications requiring absolute position sensing. The part can recognize when VCC drops below a certain voltage threshold at which time the device operates at a nominal 3 V and both the quiescent voltage output and sensitivity scale ratiometrically.
The part also provides a voltage output that is proportional to the applied magnetic field over the entire 2.7 to 5.5-V supply. The quiescent voltage output can be set to approximately 50% of the supply voltage, and the sensitivity adjusted between 1.90 and 3.50 mV/G for VCC of 5 V. The sensitivity temperature coefficient is programmed at the factory, at 0.13%/°C nominal, to compensate for Neodymium-style magnets. (Call Stephanie Fennelly for pricing and information — available now.)
Allegro MicroSystems , Worcester , MA
Stephanie Fennelly 508-854-5363
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