发明名称 CIRCULAR VERTICAL HALL MAGNETIC FIELD SENSING ELEMENT AND METHOD WITH A PLURALITY OF CONTINUOUS OUTPUT SIGNALS
摘要 A circular vertical Hall (CVH) sensing element and an associated method provide a plurality of output signals from a respective plurality of vertical Hall elements in the CVH sensing element at the same time.
申请公布号 US2015253156(A1) 申请公布日期 2015.09.10
申请号 US201514717448 申请日期 2015.05.20
申请人 Allegro MicroSystems, LLC 发明人 Petrie Craig S.
分类号 G01D5/14 主分类号 G01D5/14
代理机构 代理人
主权项 1. A method of operating a circular vertical Hall (CVH) sensing element having a plurality of vertical Hall element contacts disposed in a circle over a common implant region in a substrate, the method comprising: selecting a plurality of groups of vertical Hall element contacts from among the plurality of vertical Hall element contacts, each group representative of a respective one of a plurality of vertical Hall elements, wherein the selecting comprises selecting a first group of vertical Hall element contacts representative of a first vertical Hall element, and selecting a second group of vertical Hall element contacts representative of a second vertical Hall element; and driving at the same time the first and the second vertical Hall elements to provide at the same time a first vertical Hall element output signal between two of the vertical Hall element contacts of the first group and a second vertical Hall element output signal between two of the vertical Hall element contacts of the second group, wherein the selecting further comprises: selecting a third group of vertical Hall element contacts representative of a third vertical Hall element from among the plurality of vertical Hall element contacts, and wherein the driving further comprises:driving at the same time the third vertical Hall element to provide at the same time a third vertical Hall element output signal between two of the vertical Hall element contacts of the third group.
地址 Worcester MA US