A31315: 3D Hall-Effect Sensor for Rotary and Linear Position Measurement

Description

The A31315 is a robust, fully integrated 3DMAG™ Hall-effect magnetic position sensor IC designed to support a wide range of non-contact rotary and linear position measurement in the 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 to accurately resolve the absolute rotary (full 360° and short-stroke <360°) or linear position of a moving magnetic target.   

The A31315 features 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.

Developed in accordance with ISO 26262 and qualified per AEC-Q100 grade 0, this sensor is suitable for the most demanding safety automotive systems including transmission and powertrain actuators, pedal position, brake cylinder position, gear shifters and electronic throttles.  In harsh conditions where others fail, the A31315 thrives.

The A31315 is available as a single die in the SOIC-8 package and stacked dual die in the TSSOP-14 package for applications that require full redundancy.

Top 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 enables 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 
  • 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

A31315 3D Magnetic Position Sensor Product Overview

Want to learn more about the A31315 fully integrated 3DMAG Hall-effect magnetic position sensor IC from Allegro? Check out this video for an introduction and demonstration from Application Engineer Simon Rock.

A31315 3D Magnetic Position Sensor Product Overview

Want to learn more about the A31315 fully integrated 3DMAG Hall-effect magnetic position sensor IC from Allegro? Check out this video for an introduction and demonstration from Application Engineer Simon Rock.

Part Number Specifications and Availability

Part Number Package Type Temperature RoHS
Compliant
Part Composition /
RoHS Data
Comments Samples Check Stock
A31315LLUBTR-XY-S-AR-10 n/a -20°C to 85°C Yes View Data Contact your
local sales rep
Check
Distributor Stock
A31315LLUBTR-XY-S-SE-10 n/a -20°C to 85°C Yes View Data Contact your
local sales rep
Check
Distributor Stock
ASEK-31315-SUBKIT-T DEMO BOARD -20°C to 85°C No -- Contact your
local sales rep
Check
Distributor Stock
ASEK-31315-T-KIT DEMO BOARD -20°C to 85°C No -- Contact your
local sales rep
Check
Distributor Stock
A31315LLUBLU-XZ-S-AR-10 14-lead TSSOP -40°C to 150°C Yes View Data Contact your
local sales rep
Check
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A31315LLUBTR-XZ-S-AR-10 14-lead TSSOP -40°C to 150°C Yes View Data Contact your
local sales rep
Check
Distributor Stock
A31315LLUBTR-XZ-S-SE-10 14-lead SIP -40°C to 150°C Yes View Data Contact your
local sales rep
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A31315LOLATR-XY-S-AR-10 8-lead SOIC -40°C to 150°C Yes View Data Contact your
local sales rep
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A31315LOLATR-XY-S-SE-10 8-lead SOIC -40°C to 150°C Yes View Data Contact your
local sales rep
Check
Distributor Stock
A31315LOLATR-XZ-S-AR-10 8-lead SOIC -40°C to 150°C Yes View Data Contact your
local sales rep
Check
Distributor Stock
A31315LOLATR-XZ-S-SE-10 8-lead SOIC -40°C to 150°C Yes View Data Contact your
local sales rep
Check
Distributor Stock

Allegro’s products are not to be used in any devices or systems, including but not limited to life support devices or systems, in which a failure of Allegro’s product can reasonably be expected to cause bodily harm.