| 摘要 |
The invention relates to a microelectronic magnetic sensor device that comprises at least one sensor unit (10) with a magnetic field generator (11, 13) and a magnetic sensor element (12) that are coupled to a power supply unit (20) via only two common connecting terminals (x, y). In this way, the number of bonding pins on the associated microelectronic chip can be reduced to a minimum. The sensor units (10) may preferably comprise magnetic excitation wires (11, 13) as field generator and a GMR resistance (12) as sensor element that are connected (optionally via a capacitor (14)) in parallel to the connecting terminals (x, y). The power supply unit (20) preferably supplies a driving current with two frequency components such that the information of interest can be separated in the frequency domain of the measurement signal.
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