By combining advanced GMR technology with leading algorithms and automotive-grade packaging technology, Allegro now offers a comprehensive, state-of-the-art transmission sensor portfolio that meets the needs of today's system developers and manufacturers, while leveraging the company's 20 years of speed sensing experience, application-specific expertise, and technological advancements.
The device adds a speed-only protocol to the company's recently released ATS19580 transmission speed and direction sensor IC, setting a new standard for speed sensing and enabling developers to achieve the highest levels of system capability and adaptability. With an industry-leading air gap that is 50% larger than existing options, it improves design 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 power consumption, increasing efficiency and minimizing the carbon footprint.
“The ATS19480, our latest single-chip GMR solution for gear tooth detection, optimizes the performance of new electric vehicle applications. It is unique on the market and outperforms competing technologies thanks to its high air gap and accuracy,” says Peter Wells, Business Unit Director at Allegro. “Our new speed sensor enables designers to do things that weren’t possible before. 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 breakthrough.”.
The ATS19480 sensor follows Allegro's recent launch of the dual-channel ATS19580 IC, the industry's first fully integrated GMR speed and direction sensor, offering superior vibration immunity in applications such as automotive transmissions. Both sensors complement Allegro's ATS19420 and ATS19520 fully integrated Hall-effect speed sensors, as well as the company's family of front-biased and GMR Hall-effect products for magnetic target detection.
High integration and superior algorithms drive performance.
Monolithic integration enables the ATS19480 sensor to achieve exceptional in-system performance and highly accurate speed detection. The unique, fully integrated package reduces design complexity and simplifies the development process.
The three-pin in-line package (SIP), which allows for flexible design and system compensation, houses the IC, magnet, and EMC shielding. Precision mounting optimizes the IC's positioning relative to the magnet, as reducing the tolerance stack between the IC and magnet increases sensor accuracy and allows ample room for installation tolerances in the application.
Advanced signal compensation eliminates flat-line conditions caused by system dynamics, and differential detection protects against common-mode parasitic fields. The ATS19480 includes built-in ASIL B diagnostics and a certified safety design process for optional fault notification, and its superior performance under harsh operating conditions can help reduce failure rates, along with customer returns and warranty service claims.
Pricing and Availability:
The ATS19480 reverse-biased speed sensor IC is now available in a lead-free (SN suffix) 3-pin tin-plated SIP package. For pricing and product samples, please contact an Allegro sales office or authorized distributor.
