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A 0.011mm2 60dB SNDR 100MS/s reference error calibrated SAR ADC with 3pF decoupling capacitance for reference voltages
Chi-Hang Chan1; Yan Zhu1; Iok-Meng Ho1; Wai-Hong Zhang1; Chon-Lam Lio1; Seng-Pan U1,2,3; Rui Paulo Martins1,2,4
2017-02-06
Conference NameIEEE Asian Solid-State Circuits Conference (A-SSCC)
Source Publication2016 IEEE Asian Solid-State Circuits Conference (A-SSCC)
Pages145-148
Conference Date7-9 Nov. 2016
Conference PlaceToyama, JAPAN
CountryJAPAN
Abstract

This paper presents a calibration scheme for reference error caused by signal dependent switching transient in a high speed SAR ADC. The scheme has a little hardware overhead, which is not dependent on the type of the input signal and is able to run in the background without interrupting the ADC's normal operation. The calibration along with the SAR ADC are implemented in a 65 nm CMOS and the measurement results show that the proposed scheme effectively improves the SNDR of an 11b SAR ADC by ∼9 dB. The calibration allows the placement of only 3 pF decoupling capacitance in the reference voltages. The prototype achieves 100 MS/s sampling rate with a total power consumption of 1.6 mW at a 1.2 V supply. Plus, it exhibits a 59.03 dB and 60.4 dB SNDR at Nyquist and low input frequency, respectively, yielding a Walden FoM@Nyquist of 21.9 fJ/conv.-step. The total core area is 0.011 mm which includes the decoupling capacitor.

DOIhttp://doi.org/10.1109/ASSCC.2016.7844156
URLView the original
Indexed BySCI
Language英语
WOS Research AreaEngineering
WOS SubjectEngineering, Electrical & Electronic
WOS IDWOS:000401471500037
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Cited Times [WOS]:5   [WOS Record]     [Related Records in WOS]
Document TypeConference paper
CollectionINSTITUTE OF MICROELECTRONICS
Affiliation1.State Key Laboratory of Analog and Mixed-Signal VLSI, University of Macau, Macao, China
2.Also with Department of ECE, Faculty of Science of Technology, University of Macau, Macao, China
3.Also with Synopsys Macau Ltd
4.On leave from Instituto Superior Técnico/Universidade de Lisboa, Portugal
First Author AffilicationUniversity of Macau
Recommended Citation
GB/T 7714
Chi-Hang Chan,Yan Zhu,Iok-Meng Ho,et al. A 0.011mm2 60dB SNDR 100MS/s reference error calibrated SAR ADC with 3pF decoupling capacitance for reference voltages[C],2017:145-148.
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