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A1688 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 ponents.

A1688 Key Features

  • Integrated capacitor reduces need for external EMI protection ponents
  • Wide leads facilitate ease of assembly
  • True zero-speed operation
  • Automatic Gain Control (AGC) for air gap independent
  • Automatic Offset Adjustment (AOA) for signal
  • Large operating air gap range
  • Internal current regulator for two-wire operation
  • Undervoltage lockout
  • Single chip sensing IC for high reliability
  • On-chip voltage regulator with wide operating voltage

A1688 Applications

  • Contact Allegro™ for additional packing options