Semiconductor pressure sensor

Details Semiconductor pressure sensor Semiconductor pressure sensor

2007-02-06

2007-02-06

Lefkowitz, Edward (Department: 2855)

Measuring and testing

Fluid pressure gauge

Electrical

Reexamination Certificate

active

11319668

ABSTRACT:
A semiconductor pressure sensor is intended to achieve reduction in size and cost by decreasing the number of terminals and the number of pads. In the semiconductor pressure sensor, in a first mode in which correction data is input to a memory, a voltage input change-over switch and an input/output change-over switch are operated by an input signal from a switch change-over terminal in such a manner that a voltage input terminal and an input/output terminal are connected to a digital circuit, whereas in a second mode in which an electric signal corrected and amplified is output, the voltage input change-over switch is connected to a semiconductor sensor chip by means of an input signal from the switch change-over terminal, and the input/output terminal is connected to a correction and amplification circuit.

REFERENCES:
patent: 3817106 (1974-06-01), Hobel
patent: 4233848 (1980-11-01), Sato et al.
patent: 4366716 (1983-01-01), Yoshida
patent: RE33028 (1989-08-01), Simpson
patent: 5528940 (1996-06-01), Yamamoto et al.
patent: 5571970 (1996-11-01), Mutoh et al.
patent: 06-029555 (1994-02-01), None

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