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A 7b 2 GS/s Time-Interleaved SAR ADC with Time Skew Calibration Based on Current Integrating Sampler
Jiang W.1; Zhu Y.1; Chan C.-H.1; Murmann B.3; Seng-Pan U.1; Martins R.P.1
2018-12-14
Conference Name14th IEEE Asian Solid-State Circuits Conference (A-SSCC)
Source Publication2018 IEEE Asian Solid-State Circuits Conference, A-SSCC 2018 - Proceedings
Pages235-238
Conference DateNOV 05-07, 2018
Conference PlaceTainan, TAIWAN
Abstract

This paper presents a time-interleaved (TI) SAR ADC that utilizes the characteristic of the current integrating (CI) sampler for sampling time skew background calibration, while it also provides buffering and anti-aliasing filtering functions, simultaneously. The inter-sample interaction in the CI sampler enables the mapping of the time domain information to the amplitude domain. Time skew errors can therefore be extracted by comparing the output-code variance among channels without requiring a reference path. A 2-channel 2 GS/s 7b TI-SAR prototype realized in 28-nm CMOS achieves a 36.4 dB SNDR at Nyquist with >2.6 GHz ERBW after calibration. The ADC with CI sampler consumes 7.62 mW, leading to a Walden FoM of 70.8 fJ/conversion-step.

KeywordBackground Calibration Current Integrating Sampler Time-interleaved Adc Timing Skew
DOI10.1109/ASSCC.2018.8579344
URLView the original
Indexed ByCPCI-S
Language英語English
WOS Research AreaEngineering
WOS SubjectEngineering, Electrical & Electronic
WOS IDWOS:000459847500071
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Citation statistics
Cited Times [WOS]:4   [WOS Record]     [Related Records in WOS]
Document TypeConference paper
CollectionINSTITUTE OF MICROELECTRONICS
DEPARTMENT OF ELECTRICAL AND COMPUTER ENGINEERING
Corresponding AuthorChan C.-H.
Affiliation1.Universidade de Macau
2.Synopsys Macau Ltd.
3.Stanford University
4.Universidade de Lisboa
First Author AffilicationUniversity of Macau
Corresponding Author AffilicationUniversity of Macau
Recommended Citation
GB/T 7714
Jiang W.,Zhu Y.,Chan C.-H.,et al. A 7b 2 GS/s Time-Interleaved SAR ADC with Time Skew Calibration Based on Current Integrating Sampler[C],2018:235-238.
APA Jiang W.,Zhu Y.,Chan C.-H.,Murmann B.,Seng-Pan U.,&Martins R.P..(2018).A 7b 2 GS/s Time-Interleaved SAR ADC with Time Skew Calibration Based on Current Integrating Sampler.2018 IEEE Asian Solid-State Circuits Conference, A-SSCC 2018 - Proceedings,235-238.
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