Automatic Analog Layout Synthesis - from Capacitor Arrays in Data Converters to General Design with Routing PDF Download
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Author: Pang-Yen Chou
Publisher:
ISBN: 9783843947336
Category :
Languages : en
Pages :
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Book Description
Author: Pang-Yen Chou
Publisher:
ISBN: 9783843947336
Category :
Languages : en
Pages :
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Book Description
Author: Sina Balkir
Publisher: CRC Press
ISBN: 0203492757
Category : Computers
Languages : en
Pages : 199
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Book Description
The explosive growth and development of the integrated circuit market over the last few years have been mostly limited to the digital VLSI domain. The difficulty of automating the design process in the analog domain, the fact that a general analog design methodology remained undefined, and the poor performance of earlier tools have left the analog
Author: Helmut E. Graeb
Publisher: Springer Science & Business Media
ISBN: 1441969322
Category : Technology & Engineering
Languages : en
Pages : 302
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Book Description
Integrated circuits are fundamental electronic components in biomedical, automotive and many other technical systems. A small, yet crucial part of a chip consists of analog circuitry. This part is still in large part designed by hand and therefore represents not only a bottleneck in the design flow, but also a permanent source of design errors responsible for re-designs, costly in terms of wasted test chips and in terms of lost time-to-market. Layout design is the step of the analog design flow with the least support by commercially available, computer-aided design tools. This book provides a survey of promising new approaches to automated, analog layout design, which have been described recently and are rapidly being adopted in industry.
Author: Geert Van der Plas
Publisher: Springer Science & Business Media
ISBN: 0306479133
Category : Technology & Engineering
Languages : en
Pages : 230
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Book Description
This text addresses the design methodologies and CAD tools available for the systematic design and design automation of analogue integrated circuits. Two complementary approaches discussed increase analogue design productivity, demonstrated throughout using design times of the different design experiments undertaken.
Author: Allen Waters
Publisher:
ISBN:
Category : Analog-to-digital converters
Languages : en
Pages : 132
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Book Description
A procedure for automating the design and layout of analog-to-digital converters (ADCs) is presented. This procedure makes use of the existing synthesis and place-and-route tools that are common in digital circuit design. A method for adding rudimentary analog cells to the standard library is described, allowing the designer to synthesize mixed-signal designs from Verilog code. By using cells that are simple and highly scalable, the same Verilog code may be used to implement the design in any number of process nodes, for rapid portability and scalability. Two different ADC architectures are implemented as proofs of concept: first, a third-order MASH ADC is fabricated in 130nm and 65nm CMOS, taking advantage of the structure's tolerance to the mismatch introduced by the automated place-and-routing. Second, a Nyquist-rate pipeline ADC using the highly-scalable ring amplifier is fabricated in 65nm CMOS. The measurement results from these chips show that synthesized ADCs can achieve moderate performance with drastically reduced design time compared to manual layout.
Author: Keren Zhu (Ph. D.)
Publisher:
ISBN:
Category :
Languages : en
Pages : 0
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Book Description
The performance of analog circuits is critically dependent on layout parasitics, but the layout has traditionally been a manual and time-consuming task. Analog and mixed-signal (AMS) circuits often impose specific parasitics and mismatch requirements on their layout implementation. Designers leverage their prior experience to place devices in specific patterns and configurations to reduce parasitics, the effects of local variation gradients, and layout-dependent effects. The reason behind this is from both the algorithm and software. Automated AMS layout synthesis faces challenges in developing effective place-and-route (PNR) algorithms for high-performance AMS circuits and lacks easily usable and accessible software. This dissertation covers several analog PNR algorithms to improve the quality of automated layout synthesis and the circuit learning methodology targeting further reducing human efforts. The proposed techniques have become critical parts of the open-source AMS layout synthesis software MAGICAL. This dissertation first proposes a novel analog routing methodology. The proposed framework, GeniusRoute, leverages machine learning to provide routing guidance, mimicking the sophisticated manual layout approaches. This approach allows the automatic analog router to follow the design expertise of human engineers while no additional manual effort is required to code the layout strategies. The proposed methodology obtains significant improvements over existing techniques and achieves competitive performance to manual layouts while capable of generalizing to circuits of different functionality. This dissertation also proposes a practical mixed-signal placement framework. Unlike the existing techniques, which mainly focus on geometric constraints in analog building blocks, the proposed framework formulates and effectively optimizes the system-level signal flow for sensitive mixed-signal circuits. Leveraging prior knowledge from schematics, we propose considering the critical signal paths in automatic AMS placement and presenting an efficient framework. The proposed framework shows efficiency and effectiveness with a reduced routed wirelength compared to a state-of-the-art AMS placer and improved post-layout performance. Furthermore, the well generation in the analog layout synthesis flow is revisited. Instead of treating well generation as an isolated process, we propose a new methodology of well-aware placement. We formulate the well-aware placement problem and propose a machine learning-guided placement framework. By allowing well sharing between transistors and explicitly considering wells in placement, the proposed framework achieves more than 74% improvement in the area and more than 26% reduction in half-perimeter wirelength over existing placement methodologies in experimental results. Finally, this dissertation revisits and explores the fundamental problem of analog circuit learning. A novel unsupervised circuit learning framework is proposed to leverage the human layout as a training label. The machine learning model is pre-trained with automatically extracted labels and then transferred to other downstream tasks. The transferrable circuit representation model demonstrates the possibility of a machine learning model to understand the circuits
Author:
Publisher:
ISBN:
Category : Engineering
Languages : en
Pages : 2264
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Book Description
Since its creation in 1884, Engineering Index has covered virtually every major engineering innovation from around the world. It serves as the historical record of virtually every major engineering innovation of the 20th century. Recent content is a vital resource for current awareness, new production information, technological forecasting and competitive intelligence. The world?s most comprehensive interdisciplinary engineering database, Engineering Index contains over 10.7 million records. Each year, over 500,000 new abstracts are added from over 5,000 scholarly journals, trade magazines, and conference proceedings. Coverage spans over 175 engineering disciplines from over 80 countries. Updated weekly.
Author:
Publisher:
ISBN:
Category : Electronic circuits
Languages : en
Pages : 526
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Book Description
Author:
Publisher:
ISBN:
Category : Electrical engineering
Languages : en
Pages : 1360
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Book Description
Author:
Publisher:
ISBN:
Category : Electrical engineering
Languages : en
Pages : 1904
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Book Description
