Statistically based cascaded analog-to-digital converter calibration technique
US6781531B2 · kind B2 · utility
1Cited by
14References
13Claims
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Key dates
| Filing date | Jan 15, 2002 |
| Grant date | Aug 24, 2004 |
| Priority date | — |
| Expiry date | Jan 15, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M1/445
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
An auto-calibration technique for optimizing the transfer function of analog-to-digital converters. The technique can be applied to analog-to-digital converter (ADC) architectures employing a cascade of n-stages to form a composite n-bit ADC transfer function. The technique utilizes evaluation of the probability density function of individual bits to determine error sign, minimize error magnitude and assure calibration convergence.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.