Linear current sensor IC optimized for 3.3V operation

ALLEGRO MICROSYSTEMS ACS759 current sensor IC family provides an economical and precise solution for ac or dc current sensing in 3.3V supply applications. Device consists of a precision, low-offset linear Hall sensor circuit with a copper conduction path located near 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 signal to the Hall transducer. A precise, proportional voltage is provided by the low-offset, chopper-stabilized BiCMOS Hall IC, which is programmed for accuracy at the factory.

http://www.allegromicro.co