Industry-leading air gap enables increased reliability, efficiency, and design flexibility

Allegro MicroSystems, Inc. (“Allegro”), a global leader in sensing and power solutions for motion control and energy-efficient systems, has introduced a new, state-of-the-art giant magnetoresistance (GMR) speed sensor that measures the rotation of ferromagnetic gears. The ATS19480 speed sensor IC provides a single-channel solution that’s ideal for hybrid and pure electric vehicle transmissions, with use cases extending to two-wheelers, off-road vehicles, and industrial application designs requiring speed-only information.

Combining advanced GMR technology with leading automotive grade algorithms and packaging technology, Allegro now offers a cutting-edge, comprehensive transmission sensor portfolio that addresses the needs of today’s system developers and manufacturers, while taking advantage of the company’s 20 years of speed sensing expertise, application-specific experience, and technological advancement.

The device adds a speed-only protocol to the company’s recently released ATS19580 transmission speed and direction sensor IC, seting a new standard for speed sensing and allowing developers to achieve the highest levels of in-system capability and adaptability. With an industry-leading air gap that’s 50% larger than existing options, it improves design-in flexibility, expands design margin and tolerance capability, and facilitates a wider range of sensor installation locations. This helps reduce system complexity, size, weight, cost, and energy consumption – boosting efficiency and minimising carbon footprints.

As our newest single-chip GMR solution for gear tooth sensing, the ATS19480 optimises performance for emerging electric vehicle applications. It’s unique to the market, and outperforms competing technologies because of the high air gap and level of accuracy,” says Peter Wells, Magnetic Speed Business Unit Director at Allegro. “Our new speed sensor allows designers to do things that haven’t been possible until now. It can be placed virtually anywhere; transmissions can be smaller and lighter than ever before, which is especially important in applications where designers want the speed-only protocol. It’s a real game changer.


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