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AS5040 Rotary Position Sensor

10-bit Rotary Position Sensor with Digital Angle (interface), ABI, UVW and PWM Output

The AS5040 is a 10-bit rotary position sensor (previously known as encoder) for absolute angular measurement and with an incremental output 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 and the zero position can be programmed into the device. The absolute magnet angular position is measured with a resolution of 10 bit = 1024 positions per revolution and it is provided as a digital value on the serial interface (SSI) and on the PWM output signal.

AS5040 10-bit rotary position sensor block diagram

Key Features

  • Contactless angle and motion sensing
  • Contactless absolute angle position measurement and motion sensing
  • User programmable resolution, pole pairs and zero position
  • Multiple interfaces (SSI, ABI, UVW PWM)
  • Immune to external magnetic stray fields

Key Benefits

  • Highest reliability and durability in harsh environments
  • Great flexibility during assembly
  • One device for different applications
  • Lower material cost (no magnetic shielding needed)

Applications

  • Motor speed and motion sensor
  • Replacement of optical magnetic position sensors
  • Brushless motors
  • Robotics

AS5040 Product Facts

Resolution 10-bit
Interfaces SSI
Output Digital Angle (Interface) / ABI / UVW / PWM
Max speed [rpm] 30000
Overvoltage protection [ ]
Redundant
Supply voltage [V] 3.3 or 5.0
Temperature range [°C] -40 to +125
Package SSOP-16
Automotive qualified