Summary of A31315 3D MAGNETIC POSITION SENSORS
Allegro's A31315 is a fully integrated 3DMAG™ Hall effect sensor designed for non-contact rotary and linear position measurements in automotive, industrial, and consumer sectors. It combines vertical and planar Hall elements to detect X, Y, or Z magnetic field components. With on-chip angle calculation and configurable signal processing, it supports absolute positioning up to 360° with ratiometric analog, PWM, or SENT interfaces.
Parts used in the A31315 Project:
- A31315 3D Hall effect magnetic sensor
- Vertical Hall effect elements
- Planar Hall effect elements
- Configurable signal processing unit
- Angle calculation engine
- Ratiometric analog interface option
- PWM interface option
- SENT (SAE J2716) interface option
- Moving magnetic target
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 applications does the A31315 support?
The sensor supports non-contact rotary and linear position measurements in automotive, industrial, and consumer applications. - How many magnetic field components can the A31315 detect?
It integrates vertical and planar Hall effect elements to detect two out of three magnetic field components: X, Y, and Z. - Does the A31315 support full 360-degree rotation?
Yes, the sensors can accurately resolve absolute rotary positions including full 360 degrees and short-stroke angles less than 360 degrees. - What interface options are available for the A31315?
The device features ratiometric analog, PWM, or SENT interface options. - Can the SENT interface output field measurements from both channels?
Yes, the SENT interface provides the option to output the field measurement from both channels. - How does the A31315 help minimize programming time?
On-chip angle calculation with configurable signal path and flexibility linearization enable customers to achieve stringent accuracy while minimizing end of line programming time. - What modes are supported for position configuration?
The sensor supports piecewise-linear and binning modes. - How many fixed positions can be configured on the A31315?
The device supports up to 33-point fixed positions. - What is the maximum number of programmable positions?
The sensor allows for up to 22-point programmable positions.
