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AS5048A High-Resolution Position Sensor

14-bit rotary position sensor with digital angle (interface) and PWM output


  • Contactless absolute angle position measurement
  • 14-bit resolution (16384 positions/revolution)
  • In system programmable zero position via SPI command
  • Immune to external magnetic stray fields


  • Highest reliability and durability in harsh environments
  • High precision
  • Great flexibility during assembly (no external programmer needed)
  • Lower material cost (no magnetic shielding needed)

Product parameters

Resolution [bit] 14
Interfaces SPI
Output Digital angle (interface), PWM
Max. Speed [rpm]
Overvoltage Protection
Supply Voltage [V] 3.3 or 5.0
Temperature Range [°C] -40 to +150
Package TSSOP-14
Automotive Qualified

General Description

The AS5048A is a 14-bit rotary position sensor (previously known as encoder) for absolute angular measurement and with a PWM (=pulse width modulation) 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 simply with a SPI command. The absolute magnet angular position is measured with a resolution of 14 bit = 16384 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:

  • Angle sensor
  • Replacement of potentiometers
  • Factory and process automation
  • Robotics


Title Category Headline Buy
AS5048DemoKit Application Board Demo Kit for AS5048
AS5048AAdapterBoard Application Board Adapter Board for AS5048A
AS5048AMotorBoard Application Board Motor Board for AS5048A
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 Software Eval SW 1-0-6-0 English

Technical Documents

Name Type Description Version Language
PositionSensors_AN000304_1-00.pdf Application Note Tape & Reel Packing Information 1-00 English
AS5048_AN000386_1-00.pdf Application Note AS5048B I2C Slave Address Programming 1-00 English
AS5048A_BD000213_1-00.png Block Diagram AS5048A Block Diagram 1-00 English
AS5048_DS000298_4-00.pdf Datasheet AS5048A/B, Document version 1-11 4-00 English
AS5048_FS000149_CHIN_1-00.pdf Factsheet 14-位分辨率 1-00 Chinese
AS5048_FS000104_2-00.pdf Factsheet 14-bit Resolution 2-00 English
AS5048A_PD000215_1-00.png Other Product Document AS5048AAdapterBoard Image 1-00 English
AS5048A_PD000216_1-00.png Other Product Document AS5048AEvalKit Image 1-00 English
USB-I-P-Box_PD000329_1-00.png Other Product Document USBI&PBox Image 1-00 English
AS5048A-B_PD000370_1-00.png Other Product Document AS5048DemoKit Image 1-00 English
AS5048_MB_UG000373_1-00.pdf User Guide AS5048 Motor Board 1-00 English
AS5048_UG000372_1-00.pdf User Guide AS5048 Demoboard 1-00 English
AS5xxx_UG000386_1-00.pdf User Guide AS5xxx Rotary Magnet Holder 1-00 English
AS5048_UG000223_1-00.pdf User Guide Adapter board 1-00 English

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