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AS5043 Rotary Sensor

10-bit rotary position sensor with digital angle (interface) and linear analog output


  • Contactless absolute angle position measurement
  • User programmable zero position
  • Diagnostic modes for magnet detection and power supply loss
  • Immune to external magnetic stray fields


  • Highest reliability and durability in harsh environments
  • Great flexibility during assembly
  • Operation safety
  • Lower material cost (no magnetic shielding needed)

Product parameters

Resolution [bit] 10
Interface SSI
Output Digital angle (interface) / linear analog
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
Longevity Program

General description

The AS5043 is a 10-bit rotary position sensor (previously known as encoder) for absolute angular measurement and with a programmable analog 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 analog output signal.

With two decades of magnetic sensor system know-how, we have broad experience in selecting the most suitable magnets. ams experts recommend the following magnet suppliers.

This product suits for the following applications:

  • Angle sensor
  • Replacement of potentiometers
  • Front panel rotary knob
  • Valve control
  • Throttle position sensor


Title Category Headline Buy
SD4Y-PP Accessories Production Programmer SD4Y

Technical documents

Type Description Language
Datasheet Document version 1-83 English
Application Note AN5000 Magnet Selection Guide v1-04 English
Application Note Tape & Reel Packing Information English
User Guide Adapter PCB English
User Guide Programming tool English

Environmental documents

Type Description Language
Material Declaration Form MDF_176060008_AS5043-Z English
Material Declaration Form MDF_176060008_AS5043 English
RoHS Certificate RoHS Certificate_AS5043 English


Type Description Language
EoL Notification AS50xx_AS53xx_tubes (issued 2017-Jun) English
EoL Notification AS5xxx, AS6204, AS8223 EoL Notification (issued August-10-2021) English
EoL Notification AS5043,AS5046 EoL Notification (Issued March-29-2022 English

Other information

Type Description Language
Block Diagram AS5043 Block Diagram English
Factsheet Easy Turn English
Image AS5000 Programmer Image English
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