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A1688 Datasheet High Accuracy Sensor

Manufacturer: Allegro MicroSystems

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General Description

The A1688 is a Hall-effect-based integrated circuit (IC) that provides a user-friendly solution for true zero-speed digital ring magnet and gear tooth sensing in two-wire applications.

The A1688 is offered in the UB package, which integrates the IC and a high temperature ceramic capacitor in a single overmolded SIP package.

The integrated capacitor provides enhanced EMC performance with reduced external components.

Overview

A1688 Two-Wire, True Zero-Speed, High Accuracy Sensor IC.

Key Features

  • Integrated capacitor reduces need for external EMI protection components.
  • Wide leads facilitate ease of assembly.
  • True zero-speed operation.
  • Automatic Gain Control (AGC) for air gap independent switch points.
  • Automatic Offset Adjustment (AOA) for signal processing optimization.
  • Large operating air gap range.
  • Internal current regulator for two-wire operation.
  • Undervoltage lockout.
  • Single chip sensing IC for high rel.

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