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Robust and Fully Integrated A31315 Hall-effect Magnetic Position Sensor IC for Wide Range of Automotive and Consumer Applications

A31315 Hall-effect Magnetic Position Sensor IC
A31315 Hall-effect Magnetic Position Sensor IC

Allegro MicroSystems has introduced the A31315 sensor to its 3DMAG family of rotary and linear magnetic position sensor ICs for automotive and industrial applications. The new sensor combines Allegro’s proven planar and vertical Hall-effect technologies for measuring magnetic field components along three axes ( X, Y, Z). This helps in providing true 3D sensing capabilities with a wide magnetic dynamic range without saturation.


The A31315 sensor has been designed to deliver the measurement accuracy and performance that are required to meet the safety-critical automotive applications including steering, braking, transmission, and throttle systems. The device can offer highly accurate, absolute linear position and rotary position measurements up to 360° at the same time eases the system integration with the help of the flexible 3D Hall front end and configurable signal processing architecture.


With advanced on-chip diagnostic features, the A31315 positions sensors provide reliable and safe operation and support both rotary and linear position sensing in a robust design with excellent native angle error over the temperature in any plane. The A31315 sensor is available as a single die in a compact SOIC-8 package, and as a fully redundant stacked dual die in a TSSOP-14 package for applications requiring redundancy or higher levels of measurement.


The sensors’ wide range of programmable channel trim and linearization options can easily be adjusted to the magnetic circuitry to optimize for both accuracy and manufacturing efficiency in end-of-line programming times for specific applications.


Features of A31315 Sensor

  • 3D Hall-effect magnetic sensor for absolute rotary and linear position sensing applications
  • On-chip angle calculation with configurable signal path and flexibility linearization enables customers to achieve the most stringent accuracy requirements while minimizing end-of-line programming time.
  • Supports SENT (SAE J2716), PWM, and Ratiometric Analog output interface options
  • Developed in accordance with ISO 26262 as a hardware safety element out of context (SEooC) with single die ASIL B and dual die ASIL D capability (pending assessment)
  • AEC-Q100 Grade 0 qualified supports operation in harsh conditions required for automotive and industrial applications


Note: More technical information can be found in the A31315 Datasheet linked at the bottom of this page and on the product page of the A31315 3D Hall Effect Sensor.

Component Datasheet

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