ams AS5247 Position Sensor Dual-Die

Longevity January 2031
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Longevity January 2031

Description

The AS5247 is a high-resolution redundant 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 AS5247 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 2048 steps / 512 pulses per revolution. The resolution of the ABI signal is programmable to 1024 steps / 256 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. The AS5247 supports embedded self-diagnostics including magnetic field strength too high, magnetic field strength too low or lost magnet, and other related diagnostic features. The AS5247 is available as a dual die in a compact MLF-40 7x7 package.

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Details

Features

  • DAEC™ dynamic angle error compensation
  • 14-bit core resolution
  • Independent output interfaces: SPI, ABI, UVW, PWM
  • Zero position, configuration programmable
  • Self-diagnostics and redundancy
  • Immune to external stray fields

Benefits

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

Ordering codes

Product Type Description Order No. Availability
AS5247-HMFM
AS5247-HMFT

Downloads

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Datasheets

AS5247 DS000354

Datasheet

Application note

Technical documents

Environmental documents

Lifecycle documents

Images