Patent ID: 9423471
Filing Date: 2016-08-23
CPC Classification: G01R,H01L

Claim Text:
1. A vertical Hall-effect device, comprising: a conductive tub having a first conductivity type and disposed in a semiconductor substrate; an isolation structure arranged around a perimeter of the tub to electrically isolate the tub from other semiconductor devices that are outside the perimeter; a plurality of contact pairs having respective first and second contacts in the tub; and a controller configured to, in a first operating phase, concurrently control a first potential at the first contact of a first contact pair, control a second potential at the first contact of a second contact pair, and control a third potential at the first contact of a third contact pair; the controller further configured to measure a Hall effect current at the second contact of the first, second, or third contact pair; while the first, second, and third potentials are present.