Allegro MicroSystems introduces new 3DMAG magnetic position sensors to support next-generation ADAS applications

     Allegro MicroSystems has introduced the A31315, the newest member of its 3DMAG family of rotary and linear magnetic position sensor ics for automotive and industrial applications. The 3DMAG™ family of sensors combines Allegro's long-proven planar and vertical Hall effect technology, which can be used along three axes (X, Y, Z) Measurement of magnetic field components to achieve true 3D sensing capability with wide magnetic dynamic range without saturation phenomenon.

     The continuous evolution of advanced driver assistance systems (ADAS) and autonomous driving systems has created entirely new performance and functional safety challenges for system integrators. The A31315 sensor overcomes these challenges by providing the measurement accuracy and performance necessary for safety-critical automotive applications, able to meet the stringent requirements of application scenarios such as steering, braking, transmission, and throttle systems.

     The flexible 3D Hall front end and configurable signal processing architecture of A31315 sensors can achieve high precision and absolute linear/rotating position measurement of up to 360 °. At the same time, due to greater sensor placement freedom, it reduces the challenge of system integration. The existing 3DMAG devices such as AlS31300 and ALS31313 also supports 3D magnetometer applications, but requires all three magnetic field components (BX, BY, BZ) to track complex magnetic movements.

     SCOTT Milne, Director of the ALLEGRO Magnetic Location Sensor Business Department, said: "The 3DMAG series sensors are based on the decades of automotive magnetic sexy innovation technology of Allegra, which has expanded the leading position sensing solution in our industry. The magnetic system, which can provide the performance and security function required for the next ADAS solution. ADAS is an important growth engine in the automotive industry. Allegro has the advantage of serving the market earlier. Combining with a powerful new product line, we can be able Provide customers with the real sensor solutions and accelerate them to provide ADAS functions in smart autonomous cars. "

     High -precision A31315 position sensor can meet the key safety needs of autonomous driving systems and ADAS applications. It has an advanced diagnostic function to ensure reliable and safe operation. A31315 supports rotation and linear position sensing through a solid design, and has an excellent internal angle to the temperature error on any plane (the sensor is less than 1.2 ° within the working temperature range of -40 ° C ~+150 ° C.). The A31315 sensor follows the functional security criteria of the independent software security unit (SEOOC), complies with ISO 26262 and ASIL-B (single-chip) and ASIL-D (dual-chip) system-level integration requirements, and supports AEC-Q100 Grade 0 car standards.

     The A31315 sensor can provide a compact SOIC-8 packaging single chip format, or in order to meet the application requirements of redundant or higher measurement levels, you can also provide TSSOP-14 packaging full redundant stack dual-chip format. Unlike the traditional side -by -side dual -chip configuration, Allegro's stacking chip structure can closely align the sensing components of the two chips to ensure almost the same magnetic field measurement. This innovative design enables the dual -chip A31315 sensor to provide excellent channel matching performance and provide stricter channel comparison thresholds in a complete redundant security system.

     New development trends in the fields of autonomous driving, vehicle electrification and industrial 4.0 have enabled many systems to encounter bottlenecks in packaging, performance and power, including the multi -function 3DMAG sensor, including the new A31315 Make customers meet strict accuracy requirements. A variety of programmable channel adjustments and linearization options of these sensors can be easily adjusted according to the magnetic circuit to optimize accuracy and manufacturing efficiency for specific applications to the end of the production line. 3DMAG sensors can also provide low power and flexible power management options, which can optimize battery life in mobile applications.

     No matter what kind of interfaces (such as simulation, SAE J2716 SENT, PWM, I2C), 3DMAG sensors support flexible low -voltage programming through the sensor output, so as to allow direct programming through microcontroller in embedded design to simplify interfaces calibrated by the production line system calibration limit. This low -voltage programming option can also open a new system architecture to realize the remote site that can be programmed by an electronic control unit (ECU) to replace the sensor module design.