AH4930Q

Description

The AH4930Q automotive 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 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 AH4930Q with the 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 movements.

The AH4930Q 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 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.

Feature(s)

• 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 1 Mbit/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 T_J = -40°C to +125°C
• Small, industrial 6-pin SOT26 (Type A1) package
• Interrupt signal available to wake up a microcontroller to save system power and watch dog in wake-up mode
• Temperature measurement
• Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)
• Halogen and Antimony Free. “Green” Device (Note 3)
• The AH4930Q is suitable for automotive applications requiring specific change control; this part is AEC-Q100 qualified, PPAP capable, and manufactured in IATF16949 certified facilities. https://www.diodes.com/quality/product-definitions/

Application(s)

• 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 & door locks
• Motor commutation
• Power tools (speed, torque, direction selections)
• 2-wheelers (throttle controls, multifunction switchgears)