ACS732/3 Galvanically Isolated Current Sensor IC

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ACS732/3 Galvanically Isolated Current Sensor IC

Allegro's current sensing ICs provide a compact, fast, and accurate solution for measuring high-frequency currents

The ACS732 and ACS733 from Allegro Microsystems offer high isolation, high bandwidth Hall effect-based current sensing with user-configurable overcurrent fault detection. These features make them ideally suited for high-frequency transformer and current transformer replacement in applications running at high voltages. The ACS732 and ACS733 are suitable for all markets, including automotive, industrial, commercial, and communications systems.

  • AEC-Q100 automotive qualified
  • High bandwidth, 1 MHz analog output
  • Differential Hall sensing rejects common-mode fields
  • High-isolation SOIC16 wide body package provides galvanic isolation for high-voltage applications
  • Industry-leading noise performance with greatly improved bandwidth through proprietary amplifier and filter design
  • UL60950-1 (ed. 2) certified
    • Dielectric strength voltage = 3.6 kVRMS
    • Basic isolation working voltage = 616 VRMS
  • Fast and externally configurable overcurrent fault detection
  • 1 mΩ primary conductor resistance for low power loss and high inrush current withstand capability
  • Options for 3.3 V and 5 V single supply operation
  • Output voltage proportional to AC and DC current
  • Factory-trimmed sensitivity and quiescent output voltage for improved accuracy
  • Nearly zero magnetic hysteresis
  • Ratiometric output from supply voltage
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