HALL ELEMENT WITH SEGMENTED FIELD EFFECT PLATE

摘要

A Hall element (110) is provided with a segmented field effect plate (160, 165, 170, 175). Dynamic bias control is applied to the segments of the field effect plate. In one embodiment, a feedback signal is derived from an amplified output of the Hall element. The feedback signal is applied to the segments of the field effect plate in order to control sheet conductivity yin specific localized areas. In one embodiment, a metal field effect plate is split into four segments along lines between bias and sense contacts of the Hall element. Opposing diagonal segments are electrically connected.