Patent ID: 7034651
Filing Date: 2006-04-25
Classification: G01R

Abstract:
1. An integrated device for measuring magnetic fields comprising: a first sensor unit comprising a first full bridge circuit and a second sensor unit comprising a second full bridge circuit; said first sensor unit and said second sensor unit comprising magneto resistive material formed directly on a single substrate and having the same crystal anisotropy field; said first sensor unit comprising at least one sensing element having an elongated shape and having a total anisotropy field in a first direction; said first sensor unit having an output related to magnetic field components perpendicular to said first direction; said second sensor unit comprising at least one sensing element having an elongated shape and having a total anisotropy field in a second direction with said second direction being substantially perpendicular to said first direction; said second sensor unit having an output related to magnetic field components in a direction substantially perpendicular to said second direction; and said integrated device being independent of a biasing magnet.