Semiconductor sensor with a built-in amplification circuit

Details Semiconductor sensor with a built-in amplification circuit Semiconductor sensor with a built-in amplification circuit

1996-09-19

1998-06-23

Whitehead, Carl W.

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

Responsive to non-electrical signal

Physical deformation

257418, 257420, H01L 2982

Patent

active

057708835

ABSTRACT:
A pair of signal voltages outputted from a bridge circuit composed of plural strain gauges are linearly amplified individually by a pair of amplifiers, whereupon a difference between the pair of signal voltages is detected. The pair of amplifiers are formed respectively in regions that are symmetrical with each other on a chip. As a result, variations in the output characteristics between the amplifiers are decreased.

REFERENCES:
patent: 3887937 (1975-06-01), Gatos et al.
patent: 4736089 (1988-04-01), Hair et al.
patent: 4921811 (1990-05-01), Watanabe et al.
patent: 5461916 (1995-10-01), Fujii et al.
patent: 5541437 (1996-07-01), Watanabe et al.
patent: 5578843 (1996-11-01), Garabedian et al.
patent: 5635739 (1997-06-01), Grieff et al.

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