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AS5145B Rotary Position Sensor

12-bit Rotary Position Sensor With Digital Angle (Interface), PWM and ABI Output

The AS5145B is a contactless magnetic rotary position sensor for accurate angular measurement over a full turn of 360° and over an extended ambient temperature range of -40°C to 150°C. The absolute angle measurement provides instant indication of the magnet’s angular position with a resolution of 0.0879° = 4096 positions per revolution via a serial bit stream and as a PWM signal. The incremental output (=ABI-interface) is preprogrammed for 12 bit = 4096 positions.

AS5145B contactless magnetic rotary position sensor block diagram

Key Features

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

Applications

  • Valve Position Sensing
  • Transmission gearbox position sensor
  • Headlight position control

AS5145B Product Facts

Resolution 12-bit
Interfaces SSI
Output Digital Angle (Interface) / ABI / PWM
Max speed [rpm]
Overvoltage protection [ ]
Redundant
Supply voltage [V] 3.3 or 5.0
Temperature range [°C] -40 to +150
Package SSOP-16
Automotive qualified Yes