Wheel Speed Sensor ICs

wheel sensor, abs wheel speed sensor

Wheel Speed Sensor IC Overview

Allegro offers a selection of wheel speed sensors optimized for today’s demanding ABS applications.  Solutions are available for either ferrous targets or magnetic encoder rings, and for speed or speed-and-direction sensing capability. Allegro’s wheel speed sensors provide optimized performance in the presence of harsh automotive conditions.  Advanced peak-detection algorithms provide robustness against vehicle dynamics, such as hard cornering, and micro-oscillations in static modes.

Allegro’s solutions offer over a decade of ABS specific IC designs based on the industry’s top professionals and vehicle manufacturers' expertise. These sensor ICs also incorporate over a decade of lessons learned through the harsh, automotive scrutiny of in-vehicle testing and production. Allegro’s wheel speed sensors are offered in two current range options each using a two-wire, current output protocol. Direction information is offered in a two-wire, pulse width output protocol.

Wheel Speed Sensor ICs Selection Guide

Part Number Supply Voltage (V) Output Type Power-On State Specified Air Gap / Operating Signal Range Key Spec. Min. Speed Applications Packages
ATS642  4 to 24 2-wire High (current) 0.5 to 3 mm Duty cycle Zero speed ABS SH
ATS682  4 to 24 2-wire High (current) 0.5 to 3 mm Duty cycle Zero speed ABS SH
A1642  4 to 24 2-wire High (current) 20 to 1000 G Duty cycle Zero speed ABS KN
A1688 4 to 24 2-wire High or Low (current) 20 to 1200 G Total Pitch Deviation Zero speed ABS UB
A1698 4 to 24 2-wire PW Low (current) 20 to 1200 G Direct Detection Zero speed ABS Direction Sensor UB
Temperature range code: L = -40°C to 150°C


The following devices are discontinued: ATS645, ATS657


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