ACS722LLCTR-05AB-T [Allegro]

The Allegro ACS722 current sensor IC consists of a precise, low-offset, linear Hall sensor circuit with a copper conduction path located near the surface of the die. Applied current flowing through this copper conduction path generates a magnetic field which is sensed by the integrated Hall IC and converted into a proportional voltage. Device accuracy is optimized through the close proximity of the magnetic field to the Hall transducer. A precise, proportional voltage is provided by the low-offset, chopper-stabilized BiCMOS Hall IC, which includes Allegro's patented digital temperature compensation, resulting in extremely accurate performance over temperature. The output of the device has a positive slope when an increasing current flows through the primary copper conduction path. The internal resistance of this conductive path is 0.65 mΩ typical, providing low power loss. The terminals of the conductive path are electrically isolated from the sensor leads, allowing the ACS722 to be used in high-side current sense applications without the use of high-side differential amplifiers or other costly isolation techniques.