Asset Publisher

AS5050A Rotary Sensor

10-bit magnetic position sensor with digital angle (interface) output


  • Contactless absolute angle position measurement
  • Very low standby current
  • Very small package
  • Immune to external magnetic stray fields


  • Highest reliability and durability in harsh environments
  • Sensor for battery operated devices
  • Lower material cost (no magnetic shielding needed)

Product parameters

Resolution [bit] 10
Interfaces SPI
Output Digital angle (interface)
Max. Speed [rpm]
Overvoltage Protection
Supply Voltage [V] 3.3
Temperature Range [°C] -40 to +85
Package QFN-16
Automotive Qualified

General Description

The AS5050A is a new version of the AS5050. It is a 10-bit rotary position sensor (previously known as encoder) for absolute angular measurement 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. 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 (SPI).

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

This product suits for the following applications:

  • Motor position and motion sensor
  • Rotary knob for human machine interfaces
  • Position sensor for battery operated equipment
  • Robotics


Title Category Headline Buy
AS5050AAdapterBoard Application Board Adapter Board for AS5050A
AS5xxxUniversalConnectorBoard Accessories Universal Connector Board for AS5xxx
USBI&PBox Accessories USB I&P Box for I2C/SPI
RMH05-DK-XX Accessories Rotary Magnetic Holder


Name Type Description Language Software Software V1.4.4 (USBI&PBox) English

Technical Documents

Name Type Description Version Language
PositionSensors_AN000304_1-00.pdf Application Note Tape & Reel Packing Information 1-00 English
AS5050A_55A_AN000230_1-00.pdf Application Note Error Monitoring 1-00 English
AS5050_55_AN000176_1-00.pdf Application Note SPI over long distances 1-00 English
AS5050A_BD000214_1-00.png Block Diagram AS5050A Block Diagram 1-00 English
AS5050A_DS000305_2-00.pdf Datasheet Document version 2-06 2-00 English
AS5050A_AS5055A_FS000129_1-00.pdf Factsheet Small & Low Power 1-00 English
USB-I-P-Box_PD000329_1-00.png Other Product Document USBI&PBox Image 1-00 English
AS5050A_PD000371_1-00.png Other Product Document AS5050AAdapterBoard Image 1-00 English
AS5xxx_UG000386_1-00.pdf User Guide AS5xxx Rotary Magnet Holder 1-00 English
AS5050_55_UG000127_1-00.pdf User Guide Adapter board 1-00 English

Asset Publisher

Related Products