ATS645LSH Gear-Tooth Sensor IC

The components in speed sensing applications continue to diminish in size to meet spatial constraints and weight reduction requirements. As the geometries of gears become smaller, this can compromise the capabilities of a gear speed sensor IC. The ATS645 Hall-element-to-Hall-element spacing of only 1.5 mm makes this device uniquely capable of accommodating very fine-pitch gears. In addition, the ATS645 signal peak-detecting algorithm supports consistent switching at relatively large air gaps, where the peak-to-peak amplitude is small. These features make the ATS645 the ideal solution to detect the speed of fine-pitch targets such as those found in ABS (antilock braking) systems.