High-Sensitivity GMR Current Sensor IC for Low-Current Applications

ACS70331

Allegro-12-contact-QFN-ES-and-8-contact-SOIC-OL-Packages

The ACS70331 provides highly sensitive current sensing for applications below 5A, utilizing GMR technology for improved accuracy and resolution compared to Hall-effect sensors. Its differential configuration and low noise output ensure stable and precise measurements even in noisy environments.

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Top Features

Packaging

  • High sensitivity current sensor IC for sensing up to 5 A (DC or AC)
  • 1 MHz bandwidth with response time <550 ns
  • Low noise: 8 mA(rms) at 1 MHz
  • Non-ratiometric, analog output proportional to AC and DC current
  • Single 3.3 V supply operation
  • High DC PSRR enables use with low accuracy power supplies or batteries (3 to 4.5 V operation)
  • 1.1 mΩ primary conductor resistance results in low power loss
  • Small surface mount QFN-12 and SOIC-8 packages for space-constrained applications

The ACS70331 is available in small surface mount QFN-12, (suffix ES) and SOIC-8, (suffix OL) packages for space-constrained applications.

ES Package Documentation

OL Package Documentation

Part Number Specifications and Availability

Documentation and Resources

Documentation

Design Tools

Third Party Design Tools

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Current Sensors FAQ
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Mikroe Hall Current 4 Click