Current sensor

A current sensor comprising:

• a magnetic sensor module formed of a plurality of magnetic sensor units connected one another, the plurality of magnetic sensor units including a first magnetic sensor unit at an end of the magnetic sensor module and a last magnetic sensor unit at another end of the magnetic sensor module, each of the plurality of magnetic sensor units including:
• a first magnetic sensor element having a sensitivity axis in a first direction, the first magnetic sensor element having a first end and a second end;
• a second magnetic sensor element having a sensitivity axis in a second direction opposite to the first direction, the second magnetic sensor element having a first end and a second end;
• a first terminal connected to the first end of the first magnetic sensor element;
• a second terminal connected to the second end of the first magnetic sensor element;
• a third terminal connected to the first end of the second magnetic sensor element;
• and
• a fourth terminal connected to the second end of the second magnetic sensor element,
• wherein the first terminal of the first magnetic sensor unit is connected to a first potential source, and the third terminal of the first magnetic sensor unit is connected to a second potential source,
• wherein the second terminal and the fourth terminal of the last magnetic sensor unit are connected to each other to constitute a sensor output terminal,
• wherein the first and third terminals of each of the plurality of magnetic sensor units excluding the first magnetic sensor unit is connected to the second and fourth terminals of an adjacent magnetic sensor unit next thereto on the first magnetic sensor unit side,
• wherein the first magnetic sensor elements of the plurality of magnetic sensor units are electrically connected to one another in series, and the second magnetic sensor elements of the plurality of magnetic sensor units are electrically connected to one another in series,
• and wherein the plurality of magnetic sensor units are arranged such that the respective sensitivity axes of the first and second magnetic sensor elements are disposed along circumferences of concentric circles.