The Analysis and Application of Redundant Multistage ADC Resolution Improvements Through PDF Residue Shaping
An analysis of the statistics of multistage (pipeline, SAR, and algorithmic) ADCs with redundancy is performed and the ability to achieve an extra 6 dB of resolution in ADCs with half-bit redundancy is shown due to probability density function (PDF) residue shaping. This paper classifies redundancy...
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| Veröffentlicht in: | IEEE transactions on circuits and systems. I, Regular papers Regular papers, 2012-08, Vol.59 (8), p.1733-1742 |
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| container_title | IEEE transactions on circuits and systems. I, Regular papers |
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| creator | Guerber, J. Gande, M. Moon, U. |
| description | An analysis of the statistics of multistage (pipeline, SAR, and algorithmic) ADCs with redundancy is performed and the ability to achieve an extra 6 dB of resolution in ADCs with half-bit redundancy is shown due to probability density function (PDF) residue shaping. This paper classifies redundancy techniques to show that only some have properties leading to statistical resolution improvements. When properly implemented, resolution gains are maintained even in the presence of large sub-ADC nonlinearity. ADC design criteria for maximizing these resolution increases through PDF residue shaping are described including improved back-end ADCs, stage comparator offset bounds, and the use of scaled conventional restoring with Z added levels (CRZ) stage redundancy. PDF residue shaped structural improvements are also quantified in relation to ideal and nonideal traditional multistage ADC structures. |
| doi_str_mv | 10.1109/TCSI.2011.2180435 |
| format | Article |
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| identifier | ISSN: 1549-8328 |
| ispartof | IEEE transactions on circuits and systems. I, Regular papers, 2012-08, Vol.59 (8), p.1733-1742 |
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| language | eng |
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| source | IEEE Electronic Library (IEL) |
| subjects | Algorithmic ADC Algorithms Ash Comparators Complexity theory error correction Gain Multistage multistage ADC pipeline redundancy Pipelines Probability density function Probability density functions Quantization Redundancy redundancy resolution improvement residue shaping Residues SAR redundancy Statistics Synthetic aperture radar |
| title | The Analysis and Application of Redundant Multistage ADC Resolution Improvements Through PDF Residue Shaping |
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