Disclosed is a magnetic sensor array (1) comprising at least one magnetic field-sensitive sensor layer in an integrated multilayer GMR spin valve system, in which the magnetic field-sensitive sensor elements (10, 11, 12, 13) are interconnected so as to form a measuring bridge, the electrical resistance (R) thereof being modifiable in accordance with an external magnetic field. Each sensor element is formed by at least one largely linear measuring strip (10, 11, 12, 13) which extends perpendicular to the direction of the magnetic field (H) that is to be detected.