Digital calibration for analog-to-digital converters with implicit gain proration
US5977894A · kind A · utility
14Cited by
2References
8Claims
0Family size
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Key dates
| Filing date | Dec 31, 1997 |
| Grant date | Nov 2, 1999 |
| Priority date | — |
| Expiry date | Dec 31, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M1/167
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A method of digital calibration for analog-to-digital converters providing implicit gain proration. In accordance with the method, the calibration begins at the center of the transfer curve rather from one end or the other. By beginning in the center, calibrating in the positive direction and then calibrating in the negative direction, the interstage gain errors are also corrected without an extra gain-proration cycle. In addition, the number of accumulated measurements is reduced by a factor of two for the final correction coefficient by using the preferred method. Therefore, the roundoff errors are also reduced.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.