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author:

Dan, Binqiang (Dan, Binqiang.) [1] | Qian, Hui (Qian, Hui.) [2] (Scholars:钱慧) | Wang, Zhongfeng (Wang, Zhongfeng.) [3]

Indexed by:

CPCI-S EI Scopus

Abstract:

The development of the novel theory of unlimited sampling (US) has enabled analog-to-digital converters (ADCs) to effectively manage input signals with dynamic ranges that far exceed the threshold voltage. However, the existing design of the US asynchronous sigma-delta modulator ADC (US-ASDM-ADC) employs a nonlinear modulo operation within a two-channel architecture to generate the remainder and integer parts, leading to significant amplitude loss due to non-ideal phenomena. To address this issue, we propose a novel single-channel architecture and feedback compensation mechanism for the US-ASDM-ADC. Our approach entails a single-channel folding module to generate the remaining modulo operation while simultaneously generating the integer part of the modulo operation and initiating amplitude correction via a Schmitt trigger-based feedback system. We validate our proposed approach through transistor-level simulations.

Keyword:

amplitude compensation asynchronous sigma-delta modulator Schmidt trigger Unlimited sampling

Community:

  • [ 1 ] [Dan, Binqiang]Fuzhou Univ, Coll Phys & Informat Engn, Fuzhou 350108, Fujian, Peoples R China
  • [ 2 ] [Qian, Hui]Fuzhou Univ, Coll Phys & Informat Engn, Fuzhou 350108, Fujian, Peoples R China
  • [ 3 ] [Wang, Zhongfeng]Sun Yat Sen Univ, Sch Integrated Circuits, Shenzhen, Peoples R China

Reprint 's Address:

  • [Qian, Hui]Fuzhou Univ, Coll Phys & Informat Engn, Fuzhou 350108, Fujian, Peoples R China;;[Wang, Zhongfeng]Sun Yat Sen Univ, Sch Integrated Circuits, Shenzhen, Peoples R China;;

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Source :

2024 IEEE INTERNATIONAL SYMPOSIUM ON CIRCUITS AND SYSTEMS, ISCAS 2024

ISSN: 0271-4302

Year: 2024

Cited Count:

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ESI Highly Cited Papers on the List: 0 Unfold All

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Chinese Cited Count:

30 Days PV: 2

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