This is the current used by the AMR sensor to operate.
The AMR sensor includes magnetic resistors, and when sensing is performed, a current flows
through the resistor element, which uses current.
Also, in magnetic switches with built-in ICs, current is used to operate the internal circuit.
Although a current also flows to the magnetoresistive element of the AMR sensor, for some
products, the timing that current flows to this magnetoresistive element can be adjusted for
reducing the current that is used (internal sampling).