Interleaving error correction and adaptive sample frequency hopping for time-interleaved analog-to-digital converters
US9319058B1 · kind B1 · utility
8Cited by
14References
18Claims
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Key dates
| Filing date | May 26, 2015 |
| Grant date | Apr 19, 2016 |
| Priority date | — |
| Expiry date | May 26, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M1/1038
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
Methods and apparatus for blind detection and correction of interleaving errors using all-digital processing of data output by multiple sub-ADCs of a time-interleaved ADC are disclosed. The methods and apparatus detect and correct frequency-dependent timing and gain mismatches of the sub-ADCs of the time-interleaved ADC using a novel multiple-input multiple-output (MIMO) filter structure. Additionally, a novel adaptive sampling frequency hopping scheme is proposed to achieve uninterrupted data conversion by the time-interleaved ADC during transient time of ADC clock frequency switching.
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