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Allegro MicroSystems ATS128LSE Sensor IC

Allegro MicroSystems ATS128LSE Sensor IC is a programmable, True Power-On State (TPOS) that is an optimized combination of a hall-effect IC and a rare-earth pellet. This switch responds to magnetic signals created by ferromagnetic targets in gear-tooth sensing and proximity sensing applications. The ATS128LSE sensor IC is externally programmable and offers a wide programming range for the magnetic operating point, BOP. The fixed hysteresis sets the magnetic release point, BRP, based on the selected BOP. This device is offered in a 4-pin SIP and is lead (Pb) free, with 100% matte tin leadframe plating. The ATS128LE IC is ideal for use in gathering speed or position information using gear-tooth-based configurations, or for proximity sensing with ferromagnetic targets.

Features

  • Chopper stabilization for stable switch points throughout the operating temperature range
  • User-programmable:
    • Magnetic operating point through the VCC pin 9 programming bits provides 4-gauss resolution
    • Output polarity
    • Output fall time for reduced EMI in automotive applications
  • On-board voltage regulator for 3V to 24V operation
  • On-chip protection against:
    • Supply transients
    • Output short-circuits
    • Reverse battery condition
  • True zero-speed operation
  • True power-on state

Applications

  • Gathering speed or position information using gear-tooth-based configurations
  • Camshaft and crankshaft position sensing
  • Gear-tooth speed sensing
  • Proximity detection with ferromagnetic targets
  • Automotive and industrial motion sensing

Specifications

  • 5.5mA supply current at no load on VOUT
  • 400kHz chopping frequency
  • 28V VCC forward supply voltage
  • -18V VRCC reverse supply voltage
  • -40 to 150 operating temperature range

Block Diagram

Block Diagram - Allegro MicroSystems ATS128LSE Sensor IC

Pin-out Diagram

Allegro MicroSystems ATS128LSE Sensor IC

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Publicado: 2025-09-29 | Actualizado: 2025-10-23