ams AG - global leader in the design and manufacture of high performance analog ICs (integrated circuits)

AS5055A Position Sensor

12-bit magnetic position sensor with digital angle (interface) output

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The AS5055A is a new version of the AS5055. It is a 12-bit rotary position sensor (previously known as encoder) for absolute angular measurement over a full turn of 360° based on contactless magnetic sensor technology. This device fits perfectly for on-axis applications where a simple 2-pole magnet rotates above or below the sensor IC. The absolute magnet angular position is measured with a resolution of 12 bit = 4096 positions per revolution and it is provided as a digital value on the serial interface (SPI).

Key Features

  • Contactless absolute angle position measurement
  • Very low standby current
  • Very small package
  • Immune to external magnetic stray fields

Key Benefits

  • Highest reliability and durability in harsh environments
  • Sensor for battery operated devices
  • Lower material cost (no magnetic shielding needed)

Product Facts

Resolution 12-bit
Interfaces SPI
Output Digital Angle(Interface)
Max speed [rpm]
Overvoltage protection [ ]
Supply voltage [V] 3.3
Temperature range [°C] -40 to +85
Package QFN-16
Automotive qualified

Additional Information

  • Motor position and motion sensor
  • Rotary knob for human machine interfaces
  • Position sensor for battery operated equipment
  • Robotics