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AS5045 Rotary Sensor

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

Features

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

Benefits

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

Product parameters

Resolution [bit] 12
Interfaces SSI
Output Digital angle (interface) / PWM
Max. Speed [rpm]
Overvoltage Protection
Redundant
Supply Voltage [V] 3.3 or 5.0
Temperature Range [°C] -40 to +125
Package SSOP-16
Automotive Qualified

General Description

The AS5045 is a 12-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. The absolute magnet angular position is measured with a resolution of 12 bit = 4096 positions per revolution and it is provided as a digital value on the serial interface (SSI) and on the PWM output signal.

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
  • Front panel rotary knob
  • Robotics

Tools

Title Category Headline Buy
AS5045AdapterBoard Application Board Adapter Board for AS5045
AS5045DemoKit Application Board Demo Kit for AS5045
SD4Y-PP Accessories Production Programmer SD4Y
RMH05-DK-XX Accessories Rotary Magnetic Holder

Technical Documents

Type Description Language
Application Note Tape & Reel Packing Information English
Block Diagram AS5045 Block Diagram English
Datasheet Document version 2-01 English
EoL Notification AS50xx_AS53xx_tubes (issued 2017-Jun) English
Factsheet Absolute Digital English
Other Product Document AS5045DemoKit Image English
Other Product Document AS5045AdapterBoard Image 1 English
Other Product Document AS5045AdapterBoard Image 2 English
Other Product Document AS5000 Programmer Image English
Other Product Document SD4Y-PP Image English
User Guide Adapter PCB English
User Guide AS5xxx Rotary Magnet Holder English
User Guide Adapter board V2.1 AS5x40/AS5x45 English
User Guide Demo board English
User Guide SD4Y Production Programmer Manual English

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