Linear Current Sensors Pack 850-μΩ Current Conductor

Linear Current Sensors Pack 850-μΩ Current Conductor
Allegro MicroSystems

Described as the first surface-mount current sensors with a reinforced isolation rating, the ACS717 and ACS718 consist of a low-offset, linear Hall sensor circuit with a copper conduction path located near the surface of the die. Current flowing through the copper conduction path generates a magnetic field that 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 proportional voltage is provided by the low-offset, chopper-stabilized BiCMOS Hall IC, which is programmed for accuracy after packaging. The output of the device has a positive slope when an increasing current flows through the primary copper conduction path (from pins 1 through 4, to pins 5 through 8), which is the path used for current sensing. The internal resistance of this conductive path is 0.85 mΩ typical. Price for either device is $1.87 each/1,000.

Datasheet are available:
• ACS717:
• ACS718:

Allegro MicroSystems
Worcester, MA

Contact Info

Company: Allegro MicroSystems
Country: United States (USA)

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