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AS5048B 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 I²C 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 I²C
Output Digital angle (interface) / PWM
Max. Speed [rpm]
Overvoltage Protection
Supply Voltage [V] 3.3 or 5.0
Temperature Range [°C] -40 to +125
Package TSSOP-14
Automotive Qualified

General Description

The AS5048B 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 I²C 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 (I²C).

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
AS5048BAdapterBoard Application Board Adapter Board for AS5048B
AS5048BMotorBoard Application Board MotorBoard for AS5048B
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 Eval SW 1-0-6-0 English Software Software V1.4.4 (USBI&PBox) English

Technical Documents

Name Type Description Version Language
AS5048_AN000386_1-00.pdf Application Note AS5048B I2C Slave Address Programming 1-00 English
AnglePositionOnAxis_AN000271_2-00.pdf Application Note AN5000 Magnet Selection Guide v1-04 2-00 English
PositionSensors_AN000304_1-00.pdf Application Note Tape & Reel Packing Information 1-00 English
AS5048B_BD000232_1-00.png Block Diagram AS5048B Block Diagram 1-00 English
AS5048_DS000298_4-00.pdf Datasheet AS5048A/B, Document version 1-11 4-00 English
AS5048_FS000104_2-00.pdf Factsheet 14-bit Resolution 2-00 English
AS5048_FS000149_CHIN_1-00.pdf Factsheet 14-位分辨率 1-00 Chinese
AS5048A-B_PD000370_1-00.png Other Product Document AS5048DemoKit Image 1-00 English
AS5048B_PD000218_1-00.png Other Product Document AS5048BEvalKit Image 1-00 English
AS5048B_PD000217_1-00.png Other Product Document AS5048BAdapterBoard Image 1-00 English
USB-I-P-Box_PD000329_1-00.png Other Product Document USBI&PBox 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
AS5048_UG000223_1-00.pdf User Guide Adapter board 1-00 English
AS5xxx_UG000386_1-00.pdf User Guide AS5xxx Rotary Magnet Holder 1-00 English

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