MAGNETISM SENSOR

A mode switching portion 50 that is able to switch between a single output mode and a dual output mode is provided. In the single output mode, both a (+) magnetic field detection signal and a (-) magnetic field detection signal are output from a first external output terminal 40. In the dual output mode, the (+) magnetic field detection signal is output from the first external output terminal 40 and the (-) magnetic field detection signal is output from a second external output terminal 41. By providing the mode switching portion 50 in an integrated circuit 22, mode selection is implemented. Particularly, such mode selection may be implemented by providing the single integrated circuit 22 with a simple circuit configuration. This can reduce production cost.