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AS5145A Rotary Sensor

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

Features

  • Contactless high resolution rotational position encoding over a full turn of 360 degrees
  • Simple user-programmable zero position and settings
  • Serial communication interface (SSI)
    10-bit pulse width modulated (PWM) output
    Quadrature A/B and Index output signal
  • Rational speeds up to 30,000 rpm
  • Failure detection mode for magnet placement monitoring and loss of power supply
  • Serial read-out of multiple interconnected AS5145 devices using Daisy Chain mode

Benefits

  • Highest reliability and durability
  • Simple programming
  • Multiple interfaces
  • Ideal for motor applications
  • Failure diagnostics
  • Easy setup

Product parameters

Resolution [bit] 12
Interfaces SSI
Output Digital angle (interface) / ABI / PWM
Max. Speed [rpm]
Overvoltage Protection
Redundant
Supply Voltage [V] 3.3 or 5.0
Temperature Range [°C] -40 to +150
Package SSOP-16
Automotive Qualified Yes

General Description

The AS5145A is a contactless magnetic rotary position sensor for accurate angular measurement over a full turn of 360° and over an extended ambient temperature range of -40°C to 150°C. The absolute angle measurement provides instant indication of the magnet’s angular position with a resolution of 0.0879° = 4096 positions per revolution via a serial bit stream and as a PWM signal. The incremental output (=ABI-interface) is preprogrammed for 10 bit = 1024 positions.

Magnets cannot be ordered at ams directly. Please find a list of recommended magnet suppliers.

This product suits for the following applications:

  • Steering wheel position sensing
  • Headlight position control
  • Valve position sensing

Tools

Title Category Headline Buy
AS5145AdapterBoard Application Board Adapter Board for AS5145
AS5145DemoKit Application Board Demo Kit for AS5145
SD4Y-PP Accessories Production Programmer SD4Y
RMH05-DK-XX Accessories Rotary Magnetic Holder

Technical Documents

Type Description Language
Application Note PPTRIM programming English
Application Note Tape & Reel Packing Information English
Block Diagram AS5145 Block Diagram English
Datasheet Document version 2-00; AS5145A/B/H English
Other Product Document AS5145AdapterBoard Image English
Other Product Document AS5145DemoKit Image English
Other Product Document SD4Y-PP Image English
User Guide Adapter board V2.1 AS5x40/AS5x45 English
User Guide Demo board English
User Guide SD4Y Production Programmer Manual English
User Guide AS5xxx Rotary Magnet Holder English

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