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Diodes Incorporated AH4930Q Automotive 3D Magnetic Linear Hall Sensor

Diodes Incorporated AH4930Q Automotive 3D Magnetic Linear Hall Sensor is a miniature monolithic sensor IC sensitive to the three orthogonal components of the flux density applied to the IC. On-chip integrated temperature sensor data is available for system functions such as junction temperature indication and temperature compensation of magnetic field measurement. A precision analog signal path along with an integrated Analog-to-Digital Converter (ADC) digitizes the measured analog magnetic field values. This digitization allows the Diodes Inc. AH4930Q 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 sensor reliably measures three-dimensional, linear, and rotation movements.

The AH4930Q measurement data can be read over the I2C bus. The runtime programmable sensor offers on-chip temperature compensation of the measured units. The selectable power mode control unit enables micro-power and continuous measurement functionality. Applications include joysticks, control elements (white goods, multifunction knops), electric meters (anti-tampering), and any other application that requires accurate angular measurements or low power consumption.

Features

  • 3D magnetic flux density sensing
  • Low 9nA typical power-down current
  • Very low 13μA typical power consumption during operation (10Hz)
  • 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
  • 2.8V to 5.5V supply voltage range
  • -40°C to +125°C temperature range (TJ)
  • Small, industrial 6-pin SOT26 (Type A1) package
  • Interrupt signal available to wake up a microcontroller to save system power and watchdog in wake-up mode
  • Temperature measurement
  • Lead-free and RoHS-compliant
  • Halogen and antimony-free, Green device
  • AEC-Q100 qualified, PPAP capable, and manufactured in IATF 16949-certified facilities

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 controls, multifunction switchgear)

Specifications

  • 6V maximum supply voltage
  • 10,000G maximum magnetic flux density
  • 1150mW maximum power dissipation
  • +150°C maximum junction temperature
  • 10µs maximum power-up ramp time
  • 500µs minimum sensor initialization time
  • 3V to 3.5V power-up over-undershoot
  • ±20% clock frequency drift
  • ESD capability
    • 2kV Human Body Model (HBM)
    • 1000V Charged-Device Model (CDM)

Typical Application Circuit

Application Circuit Diagram - Diodes Incorporated AH4930Q Automotive 3D Magnetic Linear Hall Sensor

Block Diagram

Block Diagram - Diodes Incorporated AH4930Q Automotive 3D Magnetic Linear Hall Sensor

Additional Resource

Published: 2025-03-17 | Updated: 2025-04-09