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With dual, zero-crossing output signal, A1425 consists of ac-coupled differential sensor with on-chip capacitor. True zero-crossing detector has output that switches when difference in magnetic field strength between 2 Hall elements is zero. Dual-comparator scheme provides for accurate switching at zero crossing on positive and negative going regions of differential signal, while utilizing hysteresis to prevent false switching.
Excellent Timing Accuracy and Repeatability
Worcester, MA - June 18, 2004 - Allegro MicroSystems, Inc. announces a new high-accuracy analog speed sensor with integrated tracking capacitor and dual …