Monolithic integrated sensor circuit
US5844427A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 26, 1997 |
| Grant date | Dec 1, 1998 |
| Priority date | — |
| Expiry date | Feb 26, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01D5/142
- WIPO fieldMeasurement
- WIPO sectorInstruments
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.