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AS5140H Rotary Sensor

10-bit rotary position sensor with digital angle (interface) output, ABI and PWM output


  • 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

Product parameters

Resolution [bit] 10
Interfaces SSI
Output Digital angle (interface) / ABI / PWM
Max. Speed [rpm] 10000
Overvoltage Protection
Supply Voltage [V] 3.3 or 5.0
Temperature Range [°C] -40 to +150
Package SSOP-16
Automotive Qualified Yes

General Description

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.

Magnets cannot be ordered at ams directly. Please find a list of recommended magnet suppliers.

This product suits for the following applications:

  • Steering wheel position sensing
  • Headlight position control
  • Valve position sensing


Title Category Headline Buy
AS5140HAdapterBoard Application Board Adapter Board for AS5140H
AS5140HDemoKit Application Board Demo Kit for AS5140H
SD4Y-PP Accessories Production Programmer SD4Y
RMH05-DK-XX Accessories Rotary Magnetic Holder


Name Type Description Language Software Firmware V1.5.4.0 (AS5000Programmer) English

Technical Documents

Name Type Description Version Language
PositionSensors_AN000304_1-00.pdf Application Note Tape & Reel Packing Information 1-00 English
AS5140_45_5245_AN000102_1-00.pdf Application Note PPTRIM programming 1-00 English
AS5140H_BD000221_1-00.png Block Diagram AS5140H Block Diagram 1-00 English
AS5140H_DS000315_2-00.pdf Datasheet Document version 1-09 2-00 English
AS5140H_PD000375_1-00.png Other Product Document AS5140HAdapterBoard Image 1-00 English
AS5140H_PD000376_1-00.png Other Product Document AS5140HDemoKit Image 1-00 English
AS5x40_UG000126_1-00.pdf User Guide Demo board 1-00 English
AS5x40_AS5x45_UG000214_1-00.pdf User Guide Adapter board V2.1 AS5x40/AS5x45 1-00 English
AS5xxx_UG000387_1-00.pdf User Guide SD4Y Production Programmer Manual 1-00 English
AS5xxx_UG000386_1-00.pdf User Guide AS5xxx Rotary Magnet Holder 1-00 English

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