ACS37010 and ACS37012 Current Sensors Allegro MicroSystems ACS37010 and ACS37012 current sensors are high accuracy, 450kHz fully integrated hall-effect current sensors in a fused-lead SOIC-6 package. Current flows through the internal conductor coupling the magnetic field generated to the hall sensor IC. Because there is no physical connection between the current and the IC, high isolation is achieved. Two hall plates that subtract out interfering external common-mode magnetic fields sense the current differentially. The sensors are factory-trimmed to provide high accuracy over the entire operating range without the need for customer programming.