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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.

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:

  • 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
Datasheet Document version 2-00; AS5145A/B/H English
Application Note PPTRIM programming English
Application Note AN5000 Magnet Selection Guide v1-04 English
Application Note Tape & Reel Packing Information English

Notifications

Type Description Language

Other Information

Type Description Language
Block Diagram AS5145 Block Diagram English
Other Product Document AS5145AdapterBoard Image English
Other Product Document AS5145DemoKit Image English

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