Apparatus and method for dual slope calibration of a digitally calibrated transducer amplifier over temperature
US5608347A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 17, 1995 |
| Grant date | Mar 4, 1997 |
| Priority date | — |
| Expiry date | Aug 17, 2015 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F1/302
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A temperature dependent signal compensation signal for generating a dual sloped calibration signal is disclosed. The temperature compensation circuit may be coupled to an integrated transducer amplifier circuit that applies the compensation signal for reducing error generated by changing operating temperatures. The signal compensation circuit provides for independent adjustment of the slope of the dual sloped compensation signal in response to changes in the operating temperature of the signal compensation circuit. A technique for generating and adjusting the slope of the dual sloped compensation signal in response to the operating temperature exceeding and falling below a first operating temperature is also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.