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AS5040 Rotary Sensor

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


  • 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


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

Product parameters

Resolution [bit] 10
Interfaces SSI
Output Digital angle (interface) / ABI / UVW / PWM
Max. Speed [rpm] 30000
Overvoltage Protection
Supply Voltage [V] 3.3 or 5.0
Temperature Range [°C] -40 to +125
Package SSOP-16
Automotive Qualified

General Description

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.

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

This product suits for the following applications:

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


Title Category Headline Buy
AS5040AdapterBoard Application Board Adapter Board for AS5040
AS5040DemoKit Application Board Demo Kit for AS5040
SD4Y-PP Accessories Production Programmer SD4Y
RMH05-DK-XX Accessories Rotary Magnetic Holder
AS5040-PB Application Board Programming Board for AS5040

Technical Documents

Type Description Language
Application Note Tape & Reel Packing Information English
Block Diagram AS5040 Block Diagram English
Datasheet Document version 2-12 English
EoL Notification AS50xx_AS53xx_tubes (issued 2017-Jun) English
Factsheet All-Rounder English
Other Product Document AS5040-PB Image English
Other Product Document AS5040DemoKit Image English
Other Product Document AS5040AdapterBoard Image English
Other Product Document AS5000 Programmer Image English
Other Product Document SD4Y-PP Image English
User Guide Adapter PCB English
User Guide Demo board English
User Guide Adapter board V2.1 AS5x40/AS5x45 English
User Guide SD4Y Production Programmer Manual English
User Guide AS5xxx Rotary Magnet Holder English

Environmental Documents

Type Description Language
RoHS Certificate RoHS Certificate AS5040 English

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