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A19571 Datasheet GMR Transmission Speed and Direction Sensor

Manufacturer: Allegro MicroSystems

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General Description

The A19571 is a magnetic sensor integrated circuit (IC) that uses giant magnetoresistance (GMR) technology to encode the speed and direction of rotating ring magnets.

Using a state-ofthe-art GMR stack design integrated with a BiCMOS process, the IC differentially measures magnetic fields and applies advanced digital processing to robustly measure ring magnets commonly used in automotive transmissions.

The A19571

Overview

A19571 Large Air Gap, Vibration-Tolerant, GMR Transmission Speed and Direction Sensor.

Key Features

  • GMR technology delivers high magnetic sensitivity for large air gaps and minimal jitter.
  • SolidSpeed Digital Architecture provides robust, adaptive performance with advanced algorithms that provide vibration immunity over the full target pitch.
  • Flexible orientation allows parallel or perpendicular placement to the magnet.
  • ISO 26262 ASIL B with integrated diagnostics and certified safety design process.
  • EEPROM enables traceability throughout product li.

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