Summary of A31315 3D MAGNETIC POSITION SENSORS
Allegro’s A31315 3DMAG Hall-effect sensors provide robust, integrated 3D magnetic position sensing for non-contact rotary and linear measurements. They combine vertical and planar Hall elements to detect two magnetic components, offer on-chip angle calculation with configurable signal processing and linearization, and support ratiometric analog, PWM, or SENT interfaces (with dual-channel SENT option). Modes include piecewise-linear and binning, supporting up to 33 fixed positions and 22 programmable positions to meet strict accuracy requirements while reducing end-of-line programming.
Parts used in the A31315 3DMAG Magnetic Position Sensors Project:
- A31315 3DMAG Hall effect magnetic position sensor
- Vertical Hall effect elements (integrated on-chip)
- Planar Hall effect elements (integrated on-chip)
- Configurable signal processing and linearization firmware
- Ratiometric analog output interface
- PWM output interface
- SENT (SAE J2716) output interface
- Magnetic target (moving magnet for rotary or linear position)
Allegro’s A31315 robust, fully integrated 3DMAG™ Hall effect magnetic position sensors are designed to support a wide range of non-contact rotary and linear position measurements in automotive, industrial, and consumer applications.
This family of sensors integrates vertical and planar Hall effect elements to detect two out of three magnetic field components (X, Y, and Z). Using configurable signal processing, linearization, and angle calculation allows the A31315 sensors to accurately resolve the absolute rotary (full 360° and short-stroke <360°) or linear position of a moving magnetic target.
These A31315 sensors feature ratiometric analog, PWM, or SENT (SAE J2716) interface options to output the angle between the two factory-selected axes or the field from a single axis. In addition, the SENT interface provides the option to output the field measurement from both channels.
Features
- 3D Hall effect magnetic sensor for absolute rotary and linear position sensing applications
- On-chip angle calculation with configurable signal path and flexibility linearization enable customers to achieve the most stringent accuracy requirements while minimizing end of line programming time
- Piecewise-linear and binning modes
- Up to 33-point fixed position
- Up to 22-point programmable positions
Read more: A31315 3D MAGNETIC POSITION SENSORS
- What measurement types does the A31315 support?
It supports non-contact absolute rotary (full 360° and short-stroke <360°) and linear position sensing. - Which magnetic field components can the A31315 detect?
It integrates vertical and planar Hall elements to detect two out of three magnetic field components (X, Y, and Z). - What output interfaces are available on the A31315?
It offers ratiometric analog, PWM, and SENT (SAE J2716) interfaces, with SENT able to output both channels. - Does the A31315 perform on-chip angle calculation?
Yes, it includes on-chip angle calculation with configurable signal path and flexibility linearization. - What accuracy or configuration modes are supported?
It supports piecewise-linear and binning modes for accuracy and configuration. - How many fixed and programmable positions can it handle?
It supports up to 33 fixed positions and up to 22 programmable positions. - Can the sensor output the field from a single axis?
Yes, it can output the field from a single axis and the SENT interface can optionally output both channels. - What applications are targeted by the A31315?
It is designed for automotive, industrial, and consumer position sensing applications.
