UM
An 8-Bit 10-GS/s 16× Interpolation-Based Time-Domain ADC with <1.5-ps Uncalibrated Quantization Steps
Zhang,Minglei; Zhu,Yan; Chan,Chi Hang; Martins,Rui P.
2020-12-01
Source PublicationIEEE Journal of Solid-State Circuits
ISSN0018-9200
Volume55Issue:12Pages:3225-3235
AbstractThis article presents an 8-bit time-domain analog-to-digital converter (ADC) that achieves 10 GS/s by aggregating only four time-interleaved channels. It also experiences less than 3.0-dB signal-to-noise and distortion ratio (SNDR) drop at an 18-GHz input frequency from a dc input due to its small input capacitance and inherent voltage-to-time converter (VTC)-based sub-channel buffer. A 16 × time-interpolation-based time-to-digital converter (TDC) resolves in two steps while allowing both the inter-stage gain and the quantization step to be free from calibration over process, supply voltage, and temperature (PVT) variations. Furthermore, through a timing-extended residue transfer scheme, the metastability error rate is suppressed to <10 -8. Fabricated in a 65-nm CMOS process, the prototype ADC achieves a 40.1-dB SNDR for a Nyquist input signal at 10 GS/s while consuming 50.8 mW from a 1.0-V power supply, yielding a Walden figure-of-merit of 61.5 fJ/conversion-step.
KeywordAnalog-to-digital converter (ADC) and temperature (PVT) robustness high-speed ADC metastability process supply voltage time interpolation time residue time-domain ADC time-to-digital converter (TDC)
DOI10.1109/JSSC.2020.3012776
URLView the original
Language英语
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Document TypeJournal article
CollectionUniversity of Macau
Corresponding AuthorZhang,Minglei
AffiliationState Key Laboratory of Analog and Mixed-Signal Vlsi,Institute of Microelectronics,University of Macau,999078,Macao
First Author AffilicationUniversity of Macau
Corresponding Author AffilicationUniversity of Macau
Recommended Citation
GB/T 7714
Zhang,Minglei,Zhu,Yan,Chan,Chi Hang,et al. An 8-Bit 10-GS/s 16× Interpolation-Based Time-Domain ADC with <1.5-ps Uncalibrated Quantization Steps[J]. IEEE Journal of Solid-State Circuits,2020,55(12):3225-3235.
APA Zhang,Minglei,Zhu,Yan,Chan,Chi Hang,&Martins,Rui P..(2020).An 8-Bit 10-GS/s 16× Interpolation-Based Time-Domain ADC with <1.5-ps Uncalibrated Quantization Steps.IEEE Journal of Solid-State Circuits,55(12),3225-3235.
MLA Zhang,Minglei,et al."An 8-Bit 10-GS/s 16× Interpolation-Based Time-Domain ADC with <1.5-ps Uncalibrated Quantization Steps".IEEE Journal of Solid-State Circuits 55.12(2020):3225-3235.
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