ams AS5140H Rotary Sensor

Not for new design
Not for new design


The AS5140H 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 0.35° = 1024 positions per revolution via a serial bit stream and as a PWM signal.

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  • Contactless high resolution rotational position encoding over a full turn of 360º
  • Two digital 10-bit absolute outputs: Serial interface and Pulse width modulated (PWM) output
  • Three incremental output modes: Quadrature A/B and Index output signal, Step / Direction and Index output signal, 3-phase commutation for brushless DC motors
  • User programmable zero / index position


  • High resolution absolute position sensing
  • Easy to use for motor control
  • Adjustable zero position
  • No mechanical wear

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