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AS5147 Rotary Position Sensor

14-bit On-Axis Magnetic Rotary Position Sensor With 11-bit Binary Incremental Pulse Count

The AS5147 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 a revolutionary integrated dynamic angle error compensation (DAEC™) with almost 0 latency. The robust design of the device suppresses the influence of any homogenous external stray magnetic field. A standard 4-wire SPI serial interface allows a host microcontroller to read 14-bit absolute angle position data from the AS5147 and to program non-volatile settings without a dedicated programmer. The resolution of the ABI signal is programmable to 2048 steps / 512 pulses per revolution or 1024 steps / 256 pulses per revolution. The AS5147 has also a programmable UVW output and supports embedded self-diagnostics features.

AS5147 14-bit on-axis magnetic rotary position sensor block diagram

Key Features

  • DAEC™ Dynamic angle error compensation
  • 14-bit core resolution
  • Independent output interfaces: SPI, ABI, UVW, PWM
  • Zero position, configuration programmable
  • Self-Diagnostics
  • Immune to external stray field

Key Benefits

  • Easy to use - saving costs on DSP
  • Good resolution for motor & position control
  • Versatile choice of the interface
  • No programmer needed (via SPI command)
  • Supports safety challenging applications
  • Lower system costs (no shielding)

Applications

The AS5147 has been designed to support BLDC motors such as:

  • Electric power steering (EPS)
  • Transmission (gearbox, actuator)
  • Pump
  • Brake (actuator)
  • Starter & Alternator

AS5147 Product Facts

Resolution 14-bit / 11-bit
Interfaces SPI
Output ABI, UVW, PWM
Max speed [rpm] 14500
Overvoltage protection [ ]
Redundant
Supply voltage [V] 3.3 or 5.0
Temperature range [°C] -40 to +150
Package TSSOP-14
Automotive qualified Yes