A Generic Multilevel Multiplying D/A Converter for Pipelined ADCs

Sharma, Vivek; Moon, Un-Ku; Temes, Gábor C.

doi:10.1109/iscas.2005.1466052

Cited by 3 publications

(4 citation statements)

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“…In conventional restoring redundancy with Z added levels (CRZ), fewer levels are used than in the half-bit redun- dant case, but more than in the integer ADC [20], [21]. This, like half-bit redundancy, will allow for correction of over-range errors due to sub-ADC offsets and settling errors, but will have a smaller redundancy magnitude than half-bit redundancy.…”

Section: B Crz Redundancymentioning

confidence: 99%

“…Thus, there is a clear tradeoff with the CRZ scheme between the number of comparators and the loss in redundancy with greater digital complexity. One note is that [21] does achieve reduced digital complexity over [20] by changing the interstage gain of a pipeline stage, making the CRZ error correction logic look much more like that of a half-bit ADC. Example low-resolution full bit, half bit, and CRZ redundant stages are displayed in Fig.…”

Section: B Crz Redundancymentioning

confidence: 99%

“…Finally, it can be shown that the pipeline of [21] also uses non-half-bit multilevel redundant stages but can achieve full bit PDF residue shaping due to the manipulation of the interstage gain. The analysis follows that of (4)- (7) and has offset bounds similar to that of (18).…”

Section: Modifications To Crz Adcs For Pdf Residue Shapingmentioning

confidence: 99%

See 2 more Smart Citations

The Analysis and Application of Redundant Multistage ADC Resolution Improvements Through PDF Residue Shaping

Guerber

Gande

Moon

2012

IEEE Trans. Circuits Syst. I

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Abstract-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.

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Section: B Crz Redundancymentioning

confidence: 99%

Section: B Crz Redundancymentioning

confidence: 99%

See 1 more Smart Citation

The Analysis and Application of Redundant Multistage ADC Resolution Improvements Through PDF Residue Shaping

Guerber

Gande

Moon

2012

IEEE Trans. Circuits Syst. I

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“…Such gain distributions among MDACs are sub-optimal. Recently, it is demonstrated that employing a first-stage with an integer-gain (G=3) may reduce power consumption significantly [7][8]. Hence, for a given resolution it is always possible to find a better gain distribution with integer and non-integer gain MDACs as in any other system.…”

Section: Introductionmentioning

confidence: 99%