MAGNETIC FIELD SENSOR

摘要

The invention relates to a magnetic field sensor for measuring at least two components of a magnetic field. Said sensor comprises a ferromagnetic core (4), which is placed on a semiconductor chip (1), a field coil (2) to which a current can be applied, and two readout sensors (5, 6). The ferromagnetic core (4) is annular. The field coil (2) is preferably made from conductor tracks (9, 10; 23) of the semiconductor chip (1) and from bonding wires (11, 12; 24).