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AS5047U - High Resolution Rotary Position Sensor

14-bit on-axis magnetic rotary position sensor with up to 14-bit binary incremental pulse count

Features

  • DAEC ™ Dynamic angle error compensation
  • DFS ™ Dynamic filter system
  • Magnetic stray field immunity
  • Independent output interfaces: SPI, ABI, UVW, PWM

Benefits

  • Easy to use – saving costs on DSP
  • Higher durability and lower system costs (no shield needed)
  • Versatile choice of the interface

Product parameters

Resolution [bit] 14
Interfaces
Output SPI, ABI, UVW, PWM
Max. Speed [rpm] 28000
Overvoltage Protection
Redundant
Supply Voltage [V] 3.3 or 5.0
Temperature Range [°C] -40 to +125
Package TSSOP-14
Automotive Qualified No

General Description

The AS5047U is a high-resolution rotary position sensor for fast absolute angle measurement over a full 360-degree range. This new position sensor is equipped with revolutionary integrated dynamic angle error compensation (DAEC™) with almost 0 latency at higher rotational speed. For increased signal quality at lower rotational speed, the dynamic filter system (DFS ™) reduces transition noise.
The robust design of the device suppresses the influence of any
homogenous external stray magnetic field. A standard 4-wire
SPI serial interface with a CRC protection allows a host
microcontroller to read 14-bit absolute angle position data
from the AS5047U and to program non-volatile settings without
a dedicated programmer.
Incremental movements are indicated on a set of ABI signals
with a maximum resolution of 16989 steps / 4096 pulses per
revolution.
Brushless DC (BLDC) motors are controlled through a standard
UVW commutation interface with a programmable number of
pole pairs from 1 to 7. The absolute angle position is also
provided as PWM-encoded output signal.
AS5047U are single die sensors and are available in a TSSOP14
Package.

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:

  • - Factory automation
  • - Building automation
  • - Robotics
  • - PMSM (permanent magnet synchronous motor)
  • - Stepper motor closed loop
  • - Optical encoder replacement

Tools

Title Category Headline Buy
AS5x47SocketBoard Application Board Socket Board for AS5x47
USBI&PBox Accessories USB I&P Box for I2C/SPI
SD4Y-PP Accessories Production Programmer SD4Y
AS5x47UAdapterBoard Application Board Adapter Board for AS5x47U
AS5x47UMotorBoard Application Board Motor Board for AS5x47U

Technical Documents

Type Description Language
Datasheet Document version 1-00 English

Notifications

Type Description Language
Product Change Notification PCN38-2018 (AS50xx, AS51xx, AS52xx, AS54xx, AS8xxx) English

Other Information

Type Description Language
Block Diagram Block Diagram of AS5047U English
Factsheet Contactless Magnetic Position Sensing for Motor Control English

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