Hall-effect sensor having reduced edge effects and improved sens

Details Hall-effect sensor having reduced edge effects and improved sens Hall-effect sensor having reduced edge effects and improved sens

1994-02-09

1995-12-05

O'Shea, Sandra L.

Electricity: measuring and testing

Magnetic

Magnetometers

324252, 327511, 338 32H, G01R 3306, G01R 3302, H01L 4300

Patent

active

054732506

ABSTRACT:
A Hall-effect sensor having a distributed array of current sources connected to an active region formed in a substrate of an integrated circuit. A corresponding array of current sinks is connected to the active region of the substrate opposite the current sources. When current flows in a path parallel to a first dimension of the active region from the current sources to the current sinks, a measurable Hall voltage develops across the active region if a magnetic field is passed through the sensor. This Hall voltage is measured by two terminals connected across a second dimension of the active region of the substrate. The measured Hall voltage sensitivity is very high according to this configuration.

REFERENCES:
patent: 3825777 (1974-07-01), Braun
patent: 4607271 (1986-08-01), Popovic et al.
R. S. Popovic, Hall Effect Devices, Chapters 1-3, IOP Publishing Ltd., Bristol, England, 1991.

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