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Allegro MicroSystems A1304 Analog Output Linear Hall-Effect Sensor ICs

Allegro MicroSystems A1304 Analog Output Linear Hall-Effect Sensor ICs are available in a miniature, surface mount, 3-pin SOT23-W package with 100% matte tin leadframe plating. The temperature-stable, lead-free package offers operation with a 3.3V supply and wide -40°C to +85°C temperature range. These ratiometric Hall effect sensors provide a voltage output proportional to the applied magnetic field and a quiescent voltage output of 50% of the supplied voltage. Each BiCMOS monolithic circuit integrates a Hall element, offset/sensitivity trim circuitry to correct for the variation in the Hall element, a small-signal high-gain amplifier, and a proprietary dynamic offset cancellation technique.

Features

  • 3.3V supply operation
  • Allegro factory-programmed offset and sensitivity
  • Miniature 3-pin SOT23-W package
  • Low profile, surface mount
  • High-bandwidth, low-noise analog output
  • High-speed chopping scheme minimizes QVO drift across the operating temperature range
  • Temperature-stable quiescent voltage output and sensitivity
  • Precise recoverability after temperature cycling
  • Wide -40°C to +85°C ambient temperature range
  • Immune to mechanical stress
  • Lead-free and RoHS compliant

Specifications

  • 3V to 3.6V supply voltage range
  • 9mA maximum supply current, 7.7mA typical
  • 70µs maximum power-on time, 50µs typical
  • 20kHz typical internal bandwidth
  • 0.38V to 2.87V output saturation voltage range
  • 13mVp-p output referred noise
  • <1Ω typical DC output resistance
  • 4.7kΩ minimum DC output resistance
  • 10nF maximum output load capacitance
  • ±40mV typical delta quiescent voltage output
  • ±1.5% typical ratiometry/linearity sensitivity error
  • ±2% typical sensitivity drift due to package hysteresis
  • 100% matte tin leadframe plating
  • Maximum supply voltage
    • 5.5V forward
    • -0.1V reverse
  • Maximum output voltage
    • 7V forward
    • -0.1V reverse
  • Maximum output current
    • 1mA source
    • 5mA sink

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Additional Resources

Functional Block Diagram

Block Diagram - Allegro MicroSystems A1304 Analog Output Linear Hall-Effect Sensor ICs

Typical Application Circuit

Application Circuit Diagram - Allegro MicroSystems A1304 Analog Output Linear Hall-Effect Sensor ICs
Publicado: 2023-08-09 | Actualizado: 2023-08-30