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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
AS5048B Block Diagram
AS5048B Block Diagram
AS5048BAdapterBoard Image
AS5048BAdapterBoard Image
AS5048BEvalKit Image
AS5048BEvalKit Image
AS5048DemoKit Image
AS5048DemoKit Image
USBI&PBox Image
USBI&PBox Image

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).

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
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

Technical Documents

Type Description Language
Datasheet AS5048A/B, Document version 1-11 English
Application Note Tape & Reel Packing Information English

Environmental Documents

Type Description Language
Material Declaration Form 187900003 - AS5048B-HTSP English

Other Information

Type Description Language
Block Diagram AS5048B Block Diagram English
Other Product Document AS5048BAdapterBoard Image English
Other Product Document AS5048BEvalKit Image English
Other Product Document AS5048DemoKit Image English
Other Product Document USBI&PBox Image English

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