Patent ID: 8890518
Filing Date: 2014-11-18
Classification: G01R

Abstract:
1. A magnetic field sensor, comprising: a circular vertical Hall (CVH) sensing element comprising: wherein, when in the normal mode configuration, the at least first one of the plurality of vertical Hall elements provides a respective normal mode voltage between vertical Hall element contacts of the at least first one of the plurality of vertical Hall elements, the normal mode voltage responsive to a magnetic field, wherein, when in the first self-test mode configuration, the at least first one of the plurality of vertical Hall elements provides a respective first self-test voltage between a respective selected pair of vertical Hall element contacts of the at least first one of the plurality of vertical Hall elements, wherein the first self-test voltage is related to a resistance between vertical Hall element contacts of the at least first one of the plurality of vertical Hall elements, respectively, wherein the first self-test voltage has little or no response to the magnetic field.