Wheel-Speed Sensors Come In Unique Package Offering

Allegro MicroSystems introduces a package for its wheel speed sensor product family that includes an optimized Hall-effect IC, rare-earth pellet, and high-temperature ceramic capacitor in a single over-molded package. The combo reduces the need for external EMC protection and integration of a magnetic circuit, reducing manufacturing complexity. The ATS688LSN provides true zero-speed digital gear tooth sensing in two-wire applications, such as automotive or two-wheeler braking systems.

 

The single integrated circuit and magnet combination incorporates a dual element Hall-effect sensor IC and signal processing circuitry that switches in response to differential magnetic signals created by a rotating ferromagnetic target. The device contains a sophisticated compensating circuit to eliminate magnetic and system offsets. Digital tracking of the analogue signal is used to achieve true zero-speed operation. Advanced calibration algorithms are used to adjust the device gain and offset at power-up, resulting in air gap independent switch points, which allegedly improves output accuracy and mitigates the effect of system anomalies such as target vibration and sudden changes in air gap. The regulated current output is configured for two-wire operation.

Free Newsletter

Like this article? Subscribe to FierceSensors!

The sensors industry is constantly changing as innovation runs the market’s trends. FierceSensors subscribers rely on our suite of newsletters as their must-read source for the latest news, developments and analysis impacting their world. Register today to get sensors news and updates delivered right to your inbox.

 

The ATS688LSN is provided in a lead (Pb) free 3-pin back-biased SIP package (suffix SN) with tin leadframe plating. For greater details, peruse the ATS688LSN wheel speed sensor IC datasheet.

Read more on

Suggested Articles

OmniVision's new OX01F10 SoC module provides automotive designers with a small form factor with low-light performance, ultra-low power and reduced cost.

Several industry leaders have formed a QSFP-DD800 Multi-Source Agreement (MSA) Group to expedite development of high-speed, double-density, quad small form…

NXP Semiconductors N.V. has announced its secure fine ranging chipset, SR100T, to achieve precise positioning performance for next-generation UWB-enabled…