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Diodes Incorporated AH4931Q Automotive 3D Magnetic Linear Hall Sensor

Diodes Incorporated AH4931Q Automotive 3D Magnetic Linear Hall Sensor IC for the three orthogonal components of the flux density applied to the IC. The on-chip integrated temperature sensor data is available for system operations such as junction temperature indication and temperature compensation of magnetic field measurements. A precision analog signal path, along with an integrated ADC, digitizes the measured analog magnetic field values and enables the Diodes Inc AH4931Q with the correct magnetic circuit to decode the absolute position of any moving magnet. With magnetic field detection in x, y, and z-directions, the AH4931Q sensor reliably gauges three-dimensional, linear, and rotational movements.

Features

  • 3D magnetic flux density sensing
  • Low power-down current 9nA typical
  • Very low power consumption = 13μA during operation (10Hz, typ)
  • Digital output via standard I2C interface up to 1Mbit/sec
  • 12-bit data resolution for each measurement direction
  • Bx, By, and Bz linear field measurement up to +-1300Gs
  • Different power modes and variable update frequencies
  • Supply voltage range = 2.8V to 5.5V, temperature range TJ = -40°C to +125°C
  • Small, industrial 6-Pin SOT26 (Type CJ) package
  • An interrupt signal is available to wake up a microcontroller to save system power, and a watchdog is in wake-up mode
  • Temperature measurement
  • Totally lead-free and fully RoHS compliant
  • Halogen and antimony-free “Green” device

Applications

  • Knobs/levers
  • Joysticks with push
  • Rotaries with push
  • Linear (long strokes)
  • Stalk gear shifters
  • Shifter position sensors
  • Robotics shaft positions
  • Flap positions
  • Mirror positions
  • Flow meters
  • Load detection
  • Water levels
  • Multimedia rotaries/push selectors
  • Door handles and door locks
  • Motor commutation
  • Power tools (speed, torque, direction selections)
  • 2-wheelers (throttle control, multifunction switchgears)

Typical Application Circuit

Application Circuit Diagram - Diodes Incorporated AH4931Q Automotive 3D Magnetic Linear Hall Sensor

Functional Block Diagram

Block Diagram - Diodes Incorporated AH4931Q Automotive 3D Magnetic Linear Hall Sensor
Published: 2026-03-17 | Updated: 2026-03-21