AST Industry Co.,LTD , https://www.astsoundchip.com
Allegro Introduces New Packages for Two-Wire, Zero-Speed ​​Differential Gear Speed ​​Sensors
Allegro MicroSystems, LLC is excited to introduce the ATS688LSN, a new gear speed sensor package designed for high-performance applications. This single over-molded package integrates an advanced Hall-effect IC with rare-earth magnetism and high-temperature ceramic capacitors, offering a fully enclosed solution that minimizes the need for external EMC protection and magnetic circuitry. By simplifying the design, it reduces manufacturing complexity while delivering reliable performance.
The ATS688LSN features a dual Hall element sensor IC paired with sophisticated signal processing circuits. These components work together to detect differential magnetic signals from rotating ferromagnetic targets, making it ideal for two-wire systems such as automotive or two-wheel brake applications. The device includes a comprehensive compensation circuit that mitigates the impact of external magnetic fields and system offsets, ensuring accurate and stable operation.
Thanks to its digital signal processing, the ATS688LSN supports true zero-speed detection, which is crucial for applications requiring precise gear tooth sensing. The device also employs an advanced calibration algorithm during power-up, adjusting gain and offset to ensure consistent switching points regardless of air gap variations. This feature enhances output accuracy and improves reliability in the face of target vibration or sudden changes in the air gap.
The ATS688LSN delivers a regulated current output specifically tailored for two-wire operation, making it a versatile and efficient choice for a wide range of industrial and automotive applications. It comes in a lead-free 3-pin back-biased SIP package (suffix 'SN'), featuring a matte tin-plated leadframe for enhanced durability and environmental compliance.
Whether you're designing a braking system or a motion control application, the ATS688LSN offers a robust, compact, and intelligent solution that meets modern performance and reliability standards.