Dynamic Translinear Circuits—An Overview

Dynamic translinear circuits and log-domain filters form a promising and challenging approach to meet the dynamic range limitations that conventional analog implementation techniques are facing due to ever lower supply voltages, low power consumption and high-frequency demands. This paper aims to give an overview of this young, yet rapidly developing, circuit paradigm. Emphasis is placed on methods for analysis and synthesis and on state-of-the-art results obtained for both linear and non-linear applications.     

评“Digital Circuits and Microcessors”

1982年美国Mcgraw Hill Company出版的“Digital Circuits and Microprocessors”是美国纽约市立大学电子工程学院Herbert Taub教授的最新著作。托博教授是大家熟知的电子技术界著名教授,在电子技术方面他有过许多著作。这本“数字电路和微处理器”是他在以前著作的基础上,根据近代数字集成电路迅速发展的现实编写出来的新教材。全书共分逻辑代数、逻辑函数、基本组合电路、触发器、寄存器和计数器、计算法、存贮器、时序电路、控制器、运算器和输入输出控制器等十一章,全书约五十万字。     

Advances in Developing Transitions in Microwave Integrated Circuits

Advances in developing transitions in microwave integrated circuits during the last ten years are reviewed. Some typical structures of transition are introduced, Transition structures can be classified into two basic types: one is transition between the same ]rind of transmission lines on different planes of a common substrate, the other transition between different types of transmission lines.Furthermore, future development of transition structures is discussed.     

Dielectric Integration for Sub-Micron High Performance Integrated Circuits

lIntroductionTheultra-lmp-scale-integIation(UisI)technolopdrivestondsub-hacrondevicedi-mensions,thedevicedensityandpeffonnancehavecontinuouslybeenimProvedatafastrateaP-proximatelyfourfoldevery3years[lj.Astoday'sdevicedimensioncontinuestoshrinkandPackingdensityintumcontinuestoincnae,thechallengstodielectricsinadvanedCMOStech-noogyare:activeareaisolation,highasPectra-tiogaPfill,stablefiIInqUality,lOwdieleetricconstant,multilevelinterconnectintegIationandlowcostofownrship.Themostrevolution…     

Cadence收购Cosmic Circuits以扩张IP业务

Cadence设计系统公司宣布协议收购CosmicCircuits公司，这是一家领先的以模拟和混合信号IP为核心的公司。CosmicCircuits提供在40nm和28nm工艺节点上经过硅验证的接口类及先进的混合信号IP解决方案，20nm和FinFET的产品正在开发中。     

Cosmic Circuits剑指中国混合信号IP市场

差异化模拟混合信号IP核的供应商Cosmic Circuits,近日宣布与S2C公司合作,为中国SoC设计公司带来其经硅验证过的混合信号IP核的强大产品组合。     

Printed Circuits通过ISO9001：2008认证

Printed Circuits有限公司的质量管理体系已通过瑞典DNV的ISO9001：2008认证，成为美国首个通过该最新国际标准认证的线路板制造商。     

Faraday Printed Circuits准备在英国扩大生产

近日有消息称，英国Faraday Printed Circuits有限公司已从Viking Test有限公司订购了一台高级全自动反向脉冲电镀系统，从而实现其扩大生产的计划。     

Practical Drive and Protection Circuits for the IGBT

The essential requirements of IGBT drive circuit is expounded.The short-circuit characteristic and over-current protection of the IGBT are described in detail.Finally,the practical drive and protection circuits are designed.The practical re-sults show that the circuit is good in performance.     

P．D．Circuits今年订单势头强劲

尽管经济形势迫使业务水平降低，并导致众多PCB制造商纷纷关厂，但PCB供应链管理企业P．D．Circuits（PDC）的订单势头强劲，并创历史新高。这是公司自2008年第三季度以来的最高业务水平。     

Cosmic Circuits宣布经硅验证的PLL组合

差异化模拟和混合信号IP核提供商Cosmic Circuits日前宣布,其PLL在多个工艺技术节点下经过硅验证。S2C公司是Cosmic在中国的正式代理商。系统时钟PLL在55和40纳米工艺技术中实现,并且将为SoC设计者提供各种可供选择的模拟和数字PLL-包括无需任何外部元件便可支持32kHz～2000MHz输入频率的PLL,占据极小面积的PLL,和用于电磁干扰(EMI)抑制的扩频PLL。(来自S2C公司)     

Preface to the Special Issue on Semiconductor Optoelectronic Integrated Circuits

The past 20 years have witnessed the rapid growth of photonic integration circuits(PIC)technology,which has been warmly embraced by both academia and the industry.Powered by the advanced development in material growth,processing,and design capability,the PIC technology now covers multiple material platforms,including III–V(InP,GaAs),silicon,silica,lithium niobate on insulator(LNOI)polymer,etc.The integration level has evolved from a single functional device to thousands of components on-chip.The increase in the performance and the complexity of the PICs have become an energetic booster for communication and information technology.     

A Signal-Flow Driven Automatic Physical Synthesis Methodology for Analog Circuits

This paper introduces a novel automatic physical synthesis methodology for analog circuits based on the signal-flow analysis.Circuit analysis sub-system adopts the newly advanced methodology,circuit topology analysis,and circuit sensitivity analysis to generate layout constraints and control performance degradations.Considering the heuristic information about signalflow，complexity of the methodology is less than the pure performance-driven methodology.And then these constraints are implemented in device generation,placement，and routing sub-systems separately,which makes the different constraints be satisfied at most easily implemented stages.Excellent circuit performance obtained by the methodology is demonstrated by practical circuit examples.     

意大利PCB厂Elco购买法国Main Circuits Imprimés

来自意大利的电子集团Elco宣布完成对法国PCB厂Main Circuits Imprimés的收购。 Main Circuits Imprimés原是法国电脑公司Bull的下属企业。     

Fault Models and Test Generation for OpAmp Circuits—The FFM

The analog VLSI technology processes are reaching the matureness, nevertheless, there is a big constraint, regarding their use on complex electronic products: the test. The Design for Testability paradigm was developed to permit the test plan implementation early in the design cycle. However to succeed onto this strategy, the fault simulation should be carried out in order to evaluate appropriate test patterns, fault grade and so forth. Consequently adequate fault models must be established. Due to the lack of fault models, suitable to fault simulation on OpAmps, we propose in this work a methodology for Functional Fault Modeling-FFM, and some methods for test generation. A fault dictionary for OpAmps is built and a procedure for compact test vector construction is proposed. The results have shown that high level OpAmp requirements, as slew-rate, common mode rejection ration etc., can be checked by this approach with good compromise between the fault modeling problem, the analog nature of the circuit and the circuit complexity by itself.     

Advanced Circuits连续五年荣膺科罗拉多州都市废水回收区

Advanced Circuits已宣布其连续五年荣膺科罗拉多州都市废水回收区域（MWRD）“金奖”。作为卫冕冠军，Advanced Circuits是科罗拉多州获此殊荣的仅有16家公司之一。     

Discrete-Time Chaotic Circuits for Implementation of Tent Map and Bernoulli Map

Discrete-time chaotic circuit implementations of a tent map and a Bernoulli map using switched-current （SI） techniques are presented. The two circuits can be constructed with 16 MOSFET＇s and 2 capacitors. The simulations and experiments built with commercially available IC＇s for the circuits have demonstrated the validity of the circuit designs. The experiment results also indicate that the proposed circuits are integrable by a standard CMOS technology. The implementations are useful for studies and applications of chaos.     

Design and Realization of CPW Circuits Using EC-ANN Models for CPW Discontinuities

将一种精确高效的等效电路训练人工神经网络模型引入共面波导不连续性结构建模.该建模算法继承了等效电路模型和电磁仿真人工神经网络模型的优点.此次开发并得到验证的共面波导不连续性结构模型包括:台阶段、叉指电容、对称十字节和螺旋电感.这些模型嵌入CAD仿真工具可以完成电路的设计、仿真和优化,最后通过一个GaAs工艺的共面波导带通滤波器的设计与实现验证了模型的有效性.