Friday, July 19, 2024

3D Magnetic Sensor With External Signal Processing

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The 3D Hall-effect position sensors are designed for automotive and industrial use, offering precise signal processing and enhanced energy efficiency.


TDK Corporation has expanded its Micronas 3D HAL position sensor line with the introduction of the HAL/HAR 3936, a development in Hall-effect-based 3D position sensors. Engineered to meet the demands of automotive and industrial applications, the HAL/HAR 3936 enhances magnetic position processing. With programming features and precision, this sensor is suitable for applications like steering column switches, gear selectors, and brake pedal or stroke sensors. 

The HAL/HAR 3936 is designed to meet the needs for 3D position sensors and comply with ISO 26262 standards. It includes a low-power mode, allowing direct battery connections in vehicles to enhance energy efficiency. Additionally, its built-in SENT interface ensures communication of external digital signals, broadening its utility across various settings. This design enables precise position measurements essential for modern applications.

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Configurable for PWM or SENT outputs, the sensor adapts to different application requirements. In SENT mode, it conforms to the SAE J2716 rev. 4 standards, offering settings like tick time and frame format. The sensor also provides two operational modes—application mode and low-power mode—selectable via an input signal, which help optimize power consumption according to usage needs.

In application mode, the sensor can measure a 360° angular range, linear movements, and provide positioning against stray magnetic fields, enhancing the reliability of steering column switch detection. Its Hall technology neutralizes the impact of external magnetic disturbances to deliver consistent, accurate readings under any conditions.

Meeting the SEooC (Safety Element out of Context) ASIL C standards per ISO 26262:2018, the sensor meets automotive safety standards up to ASIL D. It operates effectively within a temperature range of –40 °C to 150 °C, making it suitable for both automotive and industrial environments.

Available in both SOIC8 SMD package for the single-die version and SSOP16 SMD package for the dual-die variant, the HAL/HAR 3936 provides a solution for 3D position sensing needs.

Nidhi Agarwal
Nidhi Agarwal
Nidhi Agarwal is a journalist at EFY. She is an Electronics and Communication Engineer with over five years of academic experience. Her expertise lies in working with development boards and IoT cloud. She enjoys writing as it enables her to share her knowledge and insights related to electronics, with like-minded techies.


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