ACS710 Current Sensor IC

By Allegro MicroSystems, LLC 74

ACS710 Current Sensor IC

Allegro's ACS710 current sensor IC provides an economical and precise means for current sensing applications in industrial, commercial, and communications systems. The device is offered in a small footprint surface mount package that allows easy implementation in customer applications.

The ACS710 consists of a precision linear Hall sensor integrated circuit with a copper conduction path located near the surface of the silicon die. Applied current flows through the copper conduction path, and the analog output voltage from the Hall sensor linearly tracks the magnetic field generated by the applied current. The accuracy of the ACS710 is maximized with this patented packaging configuration because the Allegro sensor is fully integrated and can be programmed in the Allegro production process to optimize the accuracy over temperature.

The internal resistance of the copper path used for current sensing is typically 1 mΩ for low power loss. Additionally, the current conduction path is electrically isolated from the low voltage sensor inputs and outputs. This allows the ACS710 family of sensors to be used in applications requiring electrical isolation without the use of optoisolators or other costly isolation techniques.

  • Ratiometric output from supply voltage
  • High isolation voltage, suitable for line-powered applications
  • User-adjustable overcurrent fault level
  • Small footprint package suitable for space-constrained applications
  • Motor control and protection
  • Load management and overcurrent detection
  • Power conversion and battery monitoring / UPS systems