ATS645LSH

www.DataSheet4U.com ATS645LSH Two-Wire True Zero Speed Miniature Differential Peak-Detecting Gear Tooth Sensor Features and Benefits Fully optimized differential digital gear tooth sensor Single chip IC for high reliability Internal current regulator for 2-wire operation Small mechanical size (8 mm diameter x 5.5 mm depth) Air gap independent switchpoints Digital output representing gear profile Precise duty cycle signal over operating temperature range Large operating air gaps Automatic Gain Control (AGC) Description 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. 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 finepitch targets such as those found in ABS (antilock braking) systems. The ATS645 combines a Hall-effect sensing integrated circuit and magnet to provide a manufacturer-friendly solution for true zero-speed digital gear-tooth sensing in two-wire applications. The device consists of a single-shot molded plastic package that includes a samari...