Allegro MicroSystems, LLC Introduces New Package for Dual Line, Zero Speed ​​Differential Gear Speed ​​Sensors

The new product provides a complete "turnkey" solution for ferromagnetic sensing

Allegro MicroSystems, LLC announces the ATS688LSN, a new package for the gear speed sensor product line, in a single over-mold package that includes an optimized Hall-effect integrated circuit, a rare-earth pellet) and high temperature ceramic capacitors. This fully integrated solution reduces the need for external EMC protection and integrated magnetic circuits, thereby reducing manufacturing complexity. The ATS688LSN provides a user-friendly solution for True Zero Speed ​​Digital Gear Tooth sensing in two-wire applications such as automotive or two-wheel braking systems.

This integrated integrated circuit and magnet combination includes dual Hall element sensor ICs and corresponding signal processing circuitry that switches between differential magnetic signals generated from rotating ferromagnetic targets. The ATS688LSN device includes a complex compensation circuit that eliminates effects such as magnetic fields and system offsets. Digital processing of analog signals ensures true zero-speed operation. Advanced calibration algorithms adjust the gain and offset of the device at power-up, keeping the switching point independent of the air gap, greatly improving output accuracy and reducing Target vibration, air gap mutation and other system caused by the impact of anomalies. The ATS688LSN's regulated current output is configured for two-wire operation.

The ATS688LSN is available in a lead-free 3-pin back-biased SIP package (suffix 'SN') with matte tin plated leadframe.

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Author：Brittany Antonia （The author of article owns the copyright.）