Invention Grant
- Patent Title: Low offset spinning current hall plate and method to operate it
- Patent Title (中): 低偏移旋转电流霍尔板及其操作方法
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Application No.: US13022844Application Date: 2011-02-08
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Publication No.: US08829900B2Publication Date: 2014-09-09
- Inventor: Udo Ausserlechner
- Applicant: Udo Ausserlechner
- Applicant Address: DE Neubiberg
- Assignee: Infineon Technologies AG
- Current Assignee: Infineon Technologies AG
- Current Assignee Address: DE Neubiberg
- Agency: Eschweiler & Associates, LLC
- Main IPC: G01R33/07
- IPC: G01R33/07 ; G01R33/02

Abstract:
One embodiment of the present invention relates to a method and apparatus for removing the effect of contact resistances for Hall effect device contacts. In one embodiment, the apparatus comprises a Hall effect device comprising a plurality of force and sense contact pairs. The force and sense contact pairs comprise a force contact and a separate and distinct sense contact. The force contact is configured to act as a supply terminal that receive an input signal while the sense contact is configured act as an output terminal to provide an output signal indicative of a measured magnetic field value. By utilizing separate contacts for inputting a signal (e.g., an applied current) and reading out a signal (e.g., an induced voltage) the non-linearities generated by contact resistances may be removed, thereby minimizing the zero point offset voltage of the measured magnetic field.
Public/Granted literature
- US20120200290A1 Low Offset Spinning Current Hall Plate and Method to Operate it Public/Granted day:2012-08-09
Information query