Summary of ALLEGRO’S NEW GMR GEAR TOOTH SPEED SENSOR
Allegro MicroSystems introduced the ATS19480, a GMR-based single-channel speed sensor IC for measuring ferromagnetic gear rotation in EV transmissions, two-wheelers, off-road vehicles, and industrial designs. It leverages advanced GMR tech, automotive-grade algorithms, and packaging to extend Allegro’s transmission sensor portfolio. The ATS19480 provides a speed-only protocol, complements the ATS19580, and features an industry-leading air gap 50% larger than competitors, improving installation flexibility, design margins, system efficiency, and reducing complexity, size, weight, cost, and energy use.
Parts used in the ATS19480 Speed Sensor Project:
- ATS19480 GMR speed sensor IC
- Ferromagnetic gear (target for rotation measurement)
- Sensor packaging compatible with automotive applications
- Automotive-grade speed sensing algorithms (embedded firmware)
- Mounting hardware to achieve variable air gap
- Electrical connectors and wiring for sensor interface
- Power supply appropriate for vehicle electronics
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.
Read more: ALLEGRO’S NEW GMR GEAR TOOTH SPEED SENSOR
- What does the ATS19480 measure?
The ATS19480 measures the rotation speed of ferromagnetic gears. - Can the ATS19480 be used in electric vehicle transmissions?
Yes, it is ideal for hybrid and pure electric vehicle transmissions. - How does the ATS19480 improve installation flexibility?
It offers an air gap 50% larger than existing options, expanding installation locations and design margin. - Does the ATS19480 provide direction sensing?
No, the ATS19480 provides a speed-only protocol; direction sensing is provided by the ATS19580. - What technology does the ATS19480 use?
It uses giant magnetoresistance (GMR) technology combined with automotive-grade algorithms and packaging. - What applications beyond EVs are supported?
Use cases include two-wheelers, off-road vehicles, and industrial applications requiring speed-only information. - How does the larger air gap affect system efficiency?
The larger air gap facilitates wider sensor placement options, helping reduce system complexity, size, weight, cost, and energy consumption. - Is the ATS19480 part of a broader portfolio?
Yes, it complements Allegro's transmission sensor portfolio and pairs with the ATS19580 for speed and direction sensing.
