Datasheet AH4930 (Diodes)

AH4930 3D MAGNETIC LINEAR HALL SENSOR WITH I2C INTERFACE Description Pin Assignments
The AH4930 3D magnetic chip 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
(Top View)
temperature compensation of magnetic field measurement. A precision analog signal-path along with integrated ADC digitizes the measured analog magnetic field values, and this allows the AH4930 with the SCL/INT 1 6 SDA correct magnetic circuit to decode the absolute position of any moving magnet. With its magnetic field detection in x, y, and z-direction the sensor reliably measures three-dimensional, linear and rotation GND 2 AH4930 5 GND movements. GND 3 7 4 VDD The AH4930 measurement data can be read over I2C bus. The sensor is runtime programmable and offers on-chip temperature compensation of the measured units. The selectable power mode
SOT26 (Type A1)
control unit enables micro-power and continuous measurement functionality. Applications include joysticks, control elements (white goods, multifunction knops), or electric meters (anti-tampering) and any other application that requires accurate angular measurements or low power consumptions.
Features Applications
• 3D magnetic flux density sensing • Knobs/levers • Low power-down current 9nA typical • Joysticks with push • Very low power consumption = 13μA during operation (10Hz, • Rotaries with push typ) • Linear (long strokes) • Digital output via standard I2C interface up to 1 Mbit/sec • Stalk gear shifters • 12-bit data resolution for each measurement direction • Shifter position sensors • Bx, By and Bz linear field measurement up to +-1300Gs • Robotics shaft positions • Different power modes and variable update frequencies • Flap positions • Supply voltage range = 2.8V to 5.5V, temperature range TJ = • Mirror positions -40°C to +125°C • Flow meters • Small, industrial 6-pin SOT26 (Type A1) package • Load detection • Interrupt signal available to wake up a microcontroller to save • Water levels system power and watch dog in wake-up mode • Multimedia rotaries/push selectors • Temperature measurement • Door handles & door locks •
Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)
• Motor commutation •
Halogen and Antimony Free. “Green” Device (Note 3)
• Power tools (speed, torque, direction selections) •
For automotive applications requiring specific change
• 2-wheelers (throttle controls, multifunction switchgears)
control (i.e. parts qualified to AEC-Q100/101/104/200, PPAP capable, and manufactured in IATF 16949 certified facilities), please contact us or your local Diodes representative. https://www.diodes.com/quality/product-definitions/
Notes: 1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS), 2011/65/EU (RoHS 2) & 2015/863/EU (RoHS 3) compliant. 2. See https://www.diodes.com/quality/lead-free/ for more information about Diodes Incorporated’s definitions of Halogen- and Antimony-free, "Green" and Lead-free. 3. Halogen- and Antimony-free "Green” products are defined as those which contain <900ppm bromine, <900ppm chlorine (<1500ppm total Br + Cl) and <1000ppm antimony compounds. AH4930 1 of 23 January 2025 Document number: DS46768 Rev. 1 - 2
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