Sensor having an offset voltage and method of operation

Details Sensor having an offset voltage and method of operation Sensor having an offset voltage and method of operation

1996-01-02

1998-07-21

Jackson, Jerome

Active solid-state devices (e.g., transistors, solid-state diode

Responsive to non-electrical signal

Physical deformation

73727, H01L 2984

Patent

active

057838534

ABSTRACT:
A diaphragm (30) flexes in response to varying forces applied to the diaphragm (30). This motion is monitored by a transducer (31) that is preferably in a Wheatstone bridge configuration. When the diaphragm (30) is in a relaxed condition, with little or no force applied to the diaphragm, an offset voltage is generated by highly doped contact regions (35,36,37,38). At least one of these highly doped contact regions (35,36,37,38) is configured to have more squares of material which increases the resistance of that particular highly doped contact region (37).

REFERENCES:
patent: 5086777 (1992-02-01), Hishii
patent: 5224059 (1993-06-01), Nitta et al.
patent: 5622901 (1997-04-01), Fukada

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