Monolithic integrated sensor circuit

Details Monolithic integrated sensor circuit Monolithic integrated sensor circuit

1997-02-26

1998-12-01

Ton, My-Trang Nu

Miscellaneous active electrical nonlinear devices, circuits, and

Specific signal discriminating without subsequent control

By amplitude

327511, 324251, G01R 3306

Patent

active

058444270

ABSTRACT:
A monolithic integrated sensor circuit is disclosed comprising a sensor system for generating an electronic sensor signal; a supply unit for the sensor system; an amplifying stage for amplifying the sensor signal; a plurality of inverting devices in the signal path of the amplifying stage which reverse the polarity of the sensor signal at equal time intervals, the time intervals and inversion of the sensor signal being controlled by a clock signal source; and an averaging combiner stage whose input receives an amplified sensor signal and whose output has a reference polarity which is controlled by means of the inverting devices in such a way as to be always the same regardless of the switching state in the signal path. The monolithic integrated sensor circuit of the present invention minimizes the offset error.

REFERENCES:
patent: 4992731 (1991-02-01), Lorenzen
patent: 5084674 (1992-01-01), Lachmann et al.
patent: 5278462 (1994-01-01), Wilson
patent: 5640090 (1997-06-01), Furuya et al.
patent: 5668331 (1997-09-01), Schintag et al.
European Search Report for 96103238.0 dated Aug. 2, 1996.

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