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Performance-Driven Unit-Capacitor Placement of Successive-Approximation-Register ADCs

Published: 02 December 2015 Publication History
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  • Abstract

    The performance of many switched-capacitor analog integrated circuits, such as analog-to-digital converters (ADCs) and sample and hold circuits, is directly related to their accurate capacitance ratios. In general, capacitor mismatch can result from two sources of errors: random mismatch and systematic mismatch. Paralleling unit capacitance (UC) with a common-centroid structure can alleviate the random mismatch errors. The complexity of generating an optimal solution to the UC placement problem is extremely high, let alone if both placement and routing problems are to be optimized simultaneously. This article evaluates the performance of the UC placement generated in an existing work and proposes an alternative UC placement to achieve optimal ratio mismatch M and better linearity performance of SAR ADC design. Results show that the proposed UC placement achieves a ratio mismatch of M = 0.695, the effective number of bits ENOB = 8.314 bits, and the integral nonlinearity INL = 0.816 LSB (least significant bits) for a 9-bit SAR ADC design.

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    Cited By

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    • (2022)A Metric of Elements Placement Properties for Nonlinearity Reduction Prediction in Binary DACs2022 Conference of Russian Young Researchers in Electrical and Electronic Engineering (ElConRus)10.1109/ElConRus54750.2022.9755486(215-219)Online publication date: 25-Jan-2022
    • (2022)Comparative Analysis of Switching Schemes for 8-bit Arrays in Binary DACs2022 International Conference on Electrical Engineering and Photonics (EExPolytech)10.1109/EExPolytech56308.2022.9950860(40-43)Online publication date: 20-Oct-2022
    • (2022)Common-Centroid Layout for Active and Passive Devices: A Review and the Road Ahead2022 27th Asia and South Pacific Design Automation Conference (ASP-DAC)10.1109/ASP-DAC52403.2022.9712576(114-121)Online publication date: 17-Jan-2022
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    1. Performance-Driven Unit-Capacitor Placement of Successive-Approximation-Register ADCs

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        Published In

        cover image ACM Transactions on Design Automation of Electronic Systems
        ACM Transactions on Design Automation of Electronic Systems  Volume 21, Issue 1
        November 2015
        464 pages
        ISSN:1084-4309
        EISSN:1557-7309
        DOI:10.1145/2852253
        • Editor:
        • Naehyuck Chang
        Issue’s Table of Contents
        Permission to make digital or hard copies of all or part of this work for personal or classroom use is granted without fee provided that copies are not made or distributed for profit or commercial advantage and that copies bear this notice and the full citation on the first page. Copyrights for components of this work owned by others than ACM must be honored. Abstracting with credit is permitted. To copy otherwise, or republish, to post on servers or to redistribute to lists, requires prior specific permission and/or a fee. Request permissions from [email protected]

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        New York, NY, United States

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        Publication History

        Published: 02 December 2015
        Accepted: 01 May 2015
        Revised: 01 April 2015
        Received: 01 December 2014
        Published in TODAES Volume 21, Issue 1

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        Author Tags

        1. Analog-to-digital converter (ADC)
        2. common-centroid
        3. routing-aware placement
        4. spatial correlation
        5. successive-approximation-register (SAR) ADC
        6. unit capacitor

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        • (2022)A Metric of Elements Placement Properties for Nonlinearity Reduction Prediction in Binary DACs2022 Conference of Russian Young Researchers in Electrical and Electronic Engineering (ElConRus)10.1109/ElConRus54750.2022.9755486(215-219)Online publication date: 25-Jan-2022
        • (2022)Comparative Analysis of Switching Schemes for 8-bit Arrays in Binary DACs2022 International Conference on Electrical Engineering and Photonics (EExPolytech)10.1109/EExPolytech56308.2022.9950860(40-43)Online publication date: 20-Oct-2022
        • (2022)Common-Centroid Layout for Active and Passive Devices: A Review and the Road Ahead2022 27th Asia and South Pacific Design Automation Conference (ASP-DAC)10.1109/ASP-DAC52403.2022.9712576(114-121)Online publication date: 17-Jan-2022
        • (2020)Comparative Analysis of Switching Schemes for 6-bit Arrays in Binary DACs2020 IEEE International Conference on Electrical Engineering and Photonics (EExPolytech)10.1109/EExPolytech50912.2020.9243952(71-75)Online publication date: 15-Oct-2020
        • (2017)PACESIEEE Transactions on Computer-Aided Design of Integrated Circuits and Systems10.1109/TCAD.2016.256140336:1(134-145)Online publication date: 1-Jan-2017

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