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Routable and Matched Layout Styles for Analog Module Generation

Published: 28 June 2018 Publication History

Abstract

Two1 novel automatic generation methods for analog layout—a symmetrical twin-row method for MOS transistors and a twisted common-centroid method for capacitor arrays—are introduced. Based on the proposed layout styles and the corresponding algorithms, the symmetry and common-centroid placement patterns for analog devices are realized to guarantee matching properties. On this basis, as the most prominent contribution of this article, channel routing-based algorithms for the proposed layout styles are presented and could achieve 100% routability due to well-arranged devices and corresponding low routing complexity. The algorithms benefits include a small layout area that maximizes the diffusion-sharing of MOS transistors and less routing layer usage for common-centroid device arrays. Moreover, we successfully applied our algorithms to the layout designs of two typical analog modules including a two-stage operating amplifier and a Successive Approximation Register Analog-to-Digital Converter (SAR-ADC). The generated layouts and the circuit simulation results demonstrate the effectiveness of our algorithms in terms of their routability and matching properties. Our algorithms can also be extended to apply to a variety of essential MOS analog circuits.

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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 23, Issue 4
Special Section on Advances in Physical Design Automation and Regular Papers
July 2018
316 pages
ISSN:1084-4309
EISSN:1557-7309
DOI:10.1145/3217208
  • 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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Association for Computing Machinery

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Publication History

Published: 28 June 2018
Accepted: 01 January 2018
Revised: 01 October 2017
Received: 01 May 2017
Published in TODAES Volume 23, Issue 4

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Author Tags

  1. Analog layout automation
  2. capacitor array
  3. common-centroid placement
  4. diffusion-sharing

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  • Research-article
  • Research
  • Refereed

Funding Sources

  • National Natural Science Foundation of China
  • China Postdoctoral Science Foundation
  • Scientific Research Foundation for the Returned Overseas Chinese Scholars, State Education Ministry

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Cited By

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  • (2023)BP Neural Network Modeling and Solving Acceleration of Analog ICsCircuits, Systems, and Signal Processing10.1007/s00034-023-02443-x42:12(7023-7044)Online publication date: 1-Dec-2023
  • (2023)High-Efficiency Multiobjective Synchronous Modeling and Solution of Analog ICsCircuits, Systems, and Signal Processing10.1007/s00034-022-02219-942:4(1984-2006)Online publication date: 1-Apr-2023
  • (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)A precision programmable multilevel voltage output and low-temperature-variation CMOS bandgap reference with area-efficient transistor-array layoutIntegration, the VLSI Journal10.1016/j.vlsi.2022.06.00387:C(74-81)Online publication date: 1-Nov-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
  • (2020)A full-transistor fine-grain multilevel delay element with compact regularity layoutAnalog Integrated Circuits and Signal Processing10.1007/s10470-020-01588-y103:1(163-172)Online publication date: 3-Feb-2020
  • (2019)Density Optimization for Analog Layout Based on Transistor-ArrayIEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences10.1587/transfun.E102.A.1720E102.A:12(1720-1730)Online publication date: 1-Dec-2019

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