A single-channel voltage-scalable 8-GS/s 8-b > 37.5-dB SNDR time-domain ADC with asynchronous pipeline successive approximation in 28-nm CMOS

This article presents a single-channel voltage-scalable 8-GS/s 8-b time-domain analog-to-digital-converter (TD-ADC). It breaks the speed limit of traditional TD-ADC by leveraging asynchronous pipeline successive approximation (APSA), which reduces the quantization period to approximate one-stage tim...

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Main Authors: Chen, Qian, Boon, Chirn Chye, Liu, Qing, Liang, Yuan
Other Authors: School of Electrical and Electronic Engineering
Format: Article
Language:English
Published: 2023
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Online Access:https://hdl.handle.net/10356/167258
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-1672582023-05-18T05:00:59Z A single-channel voltage-scalable 8-GS/s 8-b > 37.5-dB SNDR time-domain ADC with asynchronous pipeline successive approximation in 28-nm CMOS Chen, Qian Boon, Chirn Chye Liu, Qing Liang, Yuan School of Electrical and Electronic Engineering Centre for Integrated Circuits and Systems (CICS) Engineering::Electrical and electronic engineering Asynchronous Pipeline Successive Approximation High Speed This article presents a single-channel voltage-scalable 8-GS/s 8-b time-domain analog-to-digital-converter (TD-ADC). It breaks the speed limit of traditional TD-ADC by leveraging asynchronous pipeline successive approximation (APSA), which reduces the quantization period to approximate one-stage time-domain comparator decision time. A co-design methodology of voltage-to-time converter (VTC) and time-to-digital converter (TDC) is proposed to optimize the ADC linearity without increasing the complexity or power consumption, reducing the linearity request of VTC. In addition, concurrent charge redistribution and voltage pull-up is deployed in the VTC, supporting the rail-to-rail input and enabling voltage scalability. The TD-ADC is fabricated in 28-nm CMOS and occupies an active area of 0.011 mm 2 , demonstrating 39.2-dB signal-to-noise-distortion ratio (SNDR) and 56.1-dB spurious-free dynamic range (SFDR) at 0.9 V, 8-GS/s with 85.3-mW power dissipation and 37.6-dB SNDR and 56.3 dB SFDR at 0.7 V, 5.05 GS/s with 23.1-mW power dissipation, achieving 143.1-and 74.3-fJ/conv.-step Nyquist Walden figure of merit (FoM W ), respectively. Ministry of Education (MOE) This work was supported by the Singapore Ministry of Education Academic Research Fund Tier 2 under Grant MOE2019-T2-1-114. 2023-05-18T05:00:59Z 2023-05-18T05:00:59Z 2022 Journal Article Chen, Q., Boon, C. C., Liu, Q. & Liang, Y. (2022). A single-channel voltage-scalable 8-GS/s 8-b > 37.5-dB SNDR time-domain ADC with asynchronous pipeline successive approximation in 28-nm CMOS. IEEE Journal of Solid-State Circuits. https://dx.doi.org/10.1109/JSSC.2022.3230697 0018-9200 https://hdl.handle.net/10356/167258 10.1109/JSSC.2022.3230697 2-s2.0-85146236944 en MOE2019-T2-1-114 IEEE Journal of Solid-State Circuits © 2022 IEEE. All rights reserved.
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic Engineering::Electrical and electronic engineering
Asynchronous Pipeline Successive Approximation
High Speed
spellingShingle Engineering::Electrical and electronic engineering
Asynchronous Pipeline Successive Approximation
High Speed
Chen, Qian
Boon, Chirn Chye
Liu, Qing
Liang, Yuan
A single-channel voltage-scalable 8-GS/s 8-b > 37.5-dB SNDR time-domain ADC with asynchronous pipeline successive approximation in 28-nm CMOS
description This article presents a single-channel voltage-scalable 8-GS/s 8-b time-domain analog-to-digital-converter (TD-ADC). It breaks the speed limit of traditional TD-ADC by leveraging asynchronous pipeline successive approximation (APSA), which reduces the quantization period to approximate one-stage time-domain comparator decision time. A co-design methodology of voltage-to-time converter (VTC) and time-to-digital converter (TDC) is proposed to optimize the ADC linearity without increasing the complexity or power consumption, reducing the linearity request of VTC. In addition, concurrent charge redistribution and voltage pull-up is deployed in the VTC, supporting the rail-to-rail input and enabling voltage scalability. The TD-ADC is fabricated in 28-nm CMOS and occupies an active area of 0.011 mm 2 , demonstrating 39.2-dB signal-to-noise-distortion ratio (SNDR) and 56.1-dB spurious-free dynamic range (SFDR) at 0.9 V, 8-GS/s with 85.3-mW power dissipation and 37.6-dB SNDR and 56.3 dB SFDR at 0.7 V, 5.05 GS/s with 23.1-mW power dissipation, achieving 143.1-and 74.3-fJ/conv.-step Nyquist Walden figure of merit (FoM W ), respectively.
author2 School of Electrical and Electronic Engineering
author_facet School of Electrical and Electronic Engineering
Chen, Qian
Boon, Chirn Chye
Liu, Qing
Liang, Yuan
format Article
author Chen, Qian
Boon, Chirn Chye
Liu, Qing
Liang, Yuan
author_sort Chen, Qian
title A single-channel voltage-scalable 8-GS/s 8-b > 37.5-dB SNDR time-domain ADC with asynchronous pipeline successive approximation in 28-nm CMOS
title_short A single-channel voltage-scalable 8-GS/s 8-b > 37.5-dB SNDR time-domain ADC with asynchronous pipeline successive approximation in 28-nm CMOS
title_full A single-channel voltage-scalable 8-GS/s 8-b > 37.5-dB SNDR time-domain ADC with asynchronous pipeline successive approximation in 28-nm CMOS
title_fullStr A single-channel voltage-scalable 8-GS/s 8-b > 37.5-dB SNDR time-domain ADC with asynchronous pipeline successive approximation in 28-nm CMOS
title_full_unstemmed A single-channel voltage-scalable 8-GS/s 8-b > 37.5-dB SNDR time-domain ADC with asynchronous pipeline successive approximation in 28-nm CMOS
title_sort single-channel voltage-scalable 8-gs/s 8-b > 37.5-db sndr time-domain adc with asynchronous pipeline successive approximation in 28-nm cmos
publishDate 2023
url https://hdl.handle.net/10356/167258
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