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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.

With two decades of magnetic sensor system know-how, we have broad experience in selecting the most suitable magnets. ams experts recommend the following 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
Datasheet Document version 2-01 English
Application Note AN5000 Magnet Selection Guide v1-04 English
Application Note Tape & Reel Packing Information English
User Guide Adapter PCB English
User Guide Programming tool English

Environmental Documents

Type Description Language
RoHS Certificate RoHS Certificate AS5045 English

Notifications

Type Description Language
EoL Notification AS50xx_AS53xx_tubes (issued 2017-Jun) English
Product Change Notification CN24-2018 (AS252x, AS504x, SL900A) English

Other Information

Type Description Language
Block Diagram AS5045 Block Diagram 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

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