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A1221LLHLT-T - Allegro Microsystems

Description: Chopper-Stabilized Precision Hall-Effect Latches

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A1221LLHLT-T - Allegro Microsystems - PCB symbol
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PCB Footprints
A1221LLHLT-T - Allegro Microsystems PCB footprint - Other - Other - LH,3-Pin (SOT-23W)
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3D Models
A1221LLHLT-T - Allegro Microsystems - 3D model - Other - LH,3-Pin (SOT-23W)
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A1221LLHLT-T Details

  • Manufacturer Part Number:

    A1221LLHLT-T

  • Pbfree Code:

    Yes

  • Rohs Code:

    Yes

  • Part Life Cycle Code:

    Active

  • Manufacturer:

    Allegro MicroSystems LLC

  • YTEOL:

    6

  • Additional Feature:

    AEC-Q100; ISO 26262 COMPLIANT; SHORT-CIRCUIT PROTECTION

  • Body Breadth:

    1.91 mm

  • Body Height:

    1 mm

  • Body Length or Diameter:

    2.98 mm

  • Housing:

    PLASTIC

  • Hysteresis:

    10 mT

  • Magnetic Field Range-Max:

    9 mT

  • Magnetic Field Range-Min:

    -9 mT

  • Mounting Feature:

    SURFACE MOUNT

  • Operating Current-Max:

    4 mA

  • Operating Temperature-Max:

    150 °C

  • Operating Temperature-Min:

    -40 °C

  • Output Current-Max:

    60 mA

  • Output Range:

    30-60mA

  • Output Type:

    CURRENT OUTPUT

  • Package Shape/Style:

    RECTANGULAR

  • Sensors/Transducers Type:

    MAGNETIC FIELD SENSOR,HALL EFFECT

  • Supply Voltage-Max:

    24 V

  • Supply Voltage-Min:

    3 V

  • Surface Mount:

    YES

  • Terminal Finish:

    Tin (Sn)

  • Termination Type:

    SOLDER

A1221LLHLT-T Frequently Asked Questions (FAQs)

  • A symmetrical layout with a central ground plane and minimal signal trace length is recommended. Allegro provides a reference layout in their application note AN296055.
  • Use a voltage regulator or a voltage clamp circuit to regulate the output voltage. The A1221LLHLT-T has an internal voltage regulator, but it's recommended to add external regulation for high-reliability applications.
  • The A1221LLHLT-T is rated for operation from -40°C to 150°C (TJ). However, the device's accuracy and reliability may degrade above 125°C.
  • Yes, the A1221LLHLT-T is designed to withstand high vibrations. However, it's recommended to follow proper PCB mounting and screwing procedures to ensure the device remains securely attached.
  • Calibration is not required for the A1221LLHLT-T, as it is a pre-calibrated device. However, it's recommended to perform a system-level calibration to account for any system-specific errors.

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A1221LLHLT-T Overview

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