基于SRAM的可重配置电路

基于ＳＲＡＭ的可重配置ＰＬＤ（可编程逻辑器 件）的出现,为系统设计者动态改变运行电路中ＰＬＤ的逻辑功能创造了条件。ＰＬＤ使用ＳＲＡＭ单元来保存它的配置数据决定了ＰＬＤ内部互连和功能,改变这些数据,也就改变了器件的逻辑功能。由于ＳＲＡＭ的数据是易失的,因此这些数据必须保存在ＰＬＤ器件以外的ＥＰＲＯＭ,ＥＥＰＲＯＭ或ＦＬＡＳＨ ＲＯＭ等非易失存储器内,以便系统在适当的时候将其下载到ＰＬＤ中,从而实现在电路可重配置ＩＣＲ（Ｉｎ—ＣｉｒｃｕｉｔＲｅｃｏｎｆｉｇｕｒａｂｉｌｉｔｙ,在电路可重配置）。 如何实…     

红外焦平面CMOS单元读出电路

研制出一种 Ｃ Ｍ Ｏ Ｓ 差分放大器组成的电容反馈互导放大器（ Ｃ Ｔ Ｉ Ａ） 型红外焦平面读出电路,其输出端带有相关双取样（ Ｃ Ｄ Ｓ） 电路。对读出电路的注入效率进行了计算机模拟。介绍了器件的设计与工艺分析。实验结果表明,在７７ Ｋ 下,读出电路的动态范围为６６ ｄ Ｂ,功耗典型值为０ ．５３ 毫瓦／ 位     

电流最大值测量电路

设计了一种采用ＣＭＯＳＡ／Ｄ、Ｄ／Ａ通用器件组成的测量电路，能准确测量并稳定显示卢动过程电流的最大值，从而避免以往指针式电流表测量时因指针的机械惯性所引起的误差，使电流测量具有简便、准确的特点。     

SVM电路及其在大屏幕彩电上的应用

ＳＶＭ电路及其在大屏幕彩电上的应用·电路应用·３５０００４福建日立电视机有限公司吴浦飞ＳＶＭ（ＳＣＡＮＶＥＬＯＣＩＴＹＭＯＤＵＬＡ－ＴＩＯＮ）电路，即扫描速度调制电路，是近几年来大屏幕彩色电视机普遍采用的一种图象轮廓水平清晰度提升电路。它的功能是取出...     

深亚微米薄膜CMOS／SOI电路的集成器件线路模拟

开发了适用于薄膜亚微米、深亚微米ＣＭＯＳ／ＳＯＩ电路的集成器件线路模拟软件，该模拟软件采用集成数值模型，将薄膜ＳＯＩ器件的数值模拟与电路模拟有机地结合在一起，实现了薄膜亚微米、深亚微米ＣＭＯＳ／ＳＯＩ电路的精确数值模拟，利用这一软件较为详细地分析了硅层厚度为５０￣４００ｎｍ、沟道长度为０．１５￣１．０ｕｍ的ＣＭＯＳ／ＳＯＩ环形振荡器电路，使我们对深亚微米薄膜ＣＭＯＳ／ＳＯＩ环振的特性及工作机理了较     

一种智能功率集成电路隔离技术

本文介绍一种智能功率集成电路（高边ＣＭＯＳ模拟开关）的隔离技术。对除开关管ＶＤＭＯＳ管以外的器件采用自隔离技术，ＶＤＭＯＳ管不是自隔离的。衬底电势的变化易引起电路闭锁，采用浮阱技术来防止电路闭锁。     

CMOS／SOI电路模拟与参数提取

ＳＯＩ－ＭＯＳＦＥＴ主要模型参数得一致的提取，因而该模型嵌入ＳＰＩＣＥ后能保证ＣＭＯＳ／ＳＯＩ电路的正确模拟工作，从ＣＭＯＳ／ＳＯＩ器件和环振电路的模拟结果和实验结果看，两者符合得较好，说明我们所采用的ＳＯＩ ＭＯＳＦＥＴ器件模型及其参数提取都是成功的。     

CMOS电路芯片ESD保护电路设计技术的发展

本文简要地回顾了ＣＭＯＳ电路芯片上ＥＳＤ保护电路设计技术发展概况，给出了在中小规模、大规模及超大规模各阶段的ＣＭＯＳ电路芯片上ＥＳＤ保护电路的主流技术，双寄生的ＳＣＲ结构ＶＬＳＩ ＣＭＯＳ芯片上ＥＳＤ保护电路的最新设计技术，就其ＥＳＤ保护原理、设计技术及取得的成果做了较详细分析和探讨。对于研制高密度、高速度的ＶＬＳＩ ＣＭＯＳ电路。开展高ＥＳＤ失效阈值电压，小几何尺寸及低ＲＣ延迟时间常数保护电路的     

一种视频8位CMOS折叠—插值A／D转换器的设计

ＣＭＯＳ折叠式Ａ／Ｄ转换器结构是一种能兼顾面积，功耗与转换速度的新型结构，分析了折叠－插值Ａ／Ｄ转换器的原理，着重介绍一种８位ＣＭＯＳ折叠－插值电路的设计考虑和版图设计，最后给出了模拟结果。     

CMOS门阵列电路用封装外壳的研制

介绍了一种用于封装万门至十万门级ＣＭＯＳ门阵列电路的ＰＣＡ１３２多层陶瓷外壳的研制。该外壳的设计采用了ＣＡＤ设计布线,模拟并优化外壳的信号线电阻、线间电容、电感及传输延迟等参数,使其满足电路要求。并且通过结构可靠性设计,使外壳抗机械冲击、温度冲击能力大大提高,满足了高可靠应用要求。     

Resolution Enhancement Technology:Integrated Process Solutions using OPC

DUV lithography, using the 248 nm wavelength, is a viable manufacturing option for devices with features at 130 nm and less. Given the low kl value of the lithography, integrated process development is a necessary method for achieving acceptable process latitude. The application of assist features for rule based OPC requires the simultaneous optimization of the mask, illumination optics and the resist.Described in this paper are the details involved in optimizing each of these aspects for line and space imaging.A reference pitch is first chosen to determine how the optics will be set. The ideal sigma setting is determined by a simple geometrically derived expression. The inner and outer machine settings are determined, in turn,with the simulation of a figure of merit. The maximum value of the response surface of this FOM occurs at the optimal sigma settings. Experimental confirmation of this is shown in the paper.Assist features are used to modify the aerial image of the more isolated images on the mask. The effect that the diffraction of the scattering bars (SBs) has on the image intensity distribution is explained. Rules for determining the size and placement of SBs are also given.Resist is optimized for use with off-axis illumination and assist features. A general explanation of the material' s effect is discussed along with the affect on the through-pitch bias. The paper culminates with the showing of the lithographic results from the fully optimized system.     

Cost-effective test solutions for smart card and other integrated flash applications

From its emergence in the late 1980s as a lower cost alternative to early EEPROM technologies, flash memory has evolved to higher densities and speedsand rapidly growing acceptance in mobile applications.In the process, flash memory devices have placed increased test requirements on manufacturers. Today, as flash device test grows in importance in China, manufacturers face growing pressure for reduced cost-oftest, increased throughput and greater return on investment for test equipment. At the same time, the move to integrated flash packages for contactless smart card applications adds a significant further challenge to manufacturers seeking rapid, low-cost test.     

Theoretical analysis of the relationship between the Brillouin gain coefficient and the strain in the optical-fiber sensors

The relation between the power of the Brillouin signal and the strain is one of the bases of the distributed fiber sensors of temperature and strain. The coefficient of the Bfillouin gain can be changed by the temperature and the strain that will affect the power of the Brillouin scattering. The relation between the change of the Brillouin gain coefficient and the strain is thought to be linear by many researchers. However, it is not always linear based on the theoretical analysis and numerical simulation. Therefore, errors will be caused if the relation between the change of the Brillouin gain coefficient and the strain is regarded as to be linear approximately for measuring the temperature and the strain. For this reason, the influence of the parameters on the Brillouin gain coefficient is proposed through theoretical analysis and numerical simulation.     

An improved parallel thinning algorithm with two subiterations

The parallel thinning algorithm with two subiterations is improved in this paper. By analyzing the notions of connected components and passes, a conclusion is drawn that the number of passes and the number of eight-connected components are equal. Then the expression of the number of eight-connected components is obtained which replaces the old one in the algorithm. And a reserving condition is proposed by experiments, which alleviates the excess deletion where a diagonal line and a beeline intersect. The experimental results demonstrate that the thinned curve is almost located in the middle of the original curve connectivelv with single pixel width and the processing speed is high.     

Novel fiber-optical interferometer with miniaturized probe for in-hole measurements

Today, micro-system technology and the development of new MEMS （Micro-Electro-Mechanical Systems） are emerging rapidly. In order for this development to become a success in the long run, measurement systems have to ensure product quality. Most often, MEMS have to be tested by means of functionality or destructive tests. One reason for this is that there are no suitable systems or sensing probes available which can be used for the measurement of quasi inaccessible features like small holes or cavities. We present a measurement system that could be used for these kinds of measurements. The system combines a fiber optical, miniaturized sensing probe with low-coherence interferometry, so that absolute distance measurements with nanometer accuracy are possible.     

Development of the readout system for waveguide multilayer optical card

Waveguide multilayer optical card （WMOC） is a novel storage device of three-dimensional optical information. An advanced readout system fitting for the WMOC is introduced in this paper. The hardware mainly consists of the light source for reading, WMOC, motorized stages addressing unit, microscope imaging unit, CCD detecting unit and PC controlling ＆ processing unit. The movement of the precision motorized stage is controlled by the computer through Visual Basic （VB） language in software. A control panel is also designed to get the layer address and the page address through which the position of the motorized stages can be changed. The WMOC readout system is easy to manage and the readout result is directly displayed on computer monitor.     

Study of waveguide coupling efficiency in hybrid silicon lasers

This paper presents a new method to increase the waveguide coupling efficiency in hybrid silicon lasers. We find that the propagation constant of the InGaAsP emitting layer can be equal to that of the Si resonant layer through improving the design size of the InP waveguide. The coupling power achieves 42% of the total power in the hybrid lasers when the thickness of the bonding layer is 100 nm. Our result is very close to 50% of the total power reported by Intel when the thickness of the thin bonding layer is less than 5 nm. Therefore, our invariable coupling power technique is simpler than Intel＇s.     

Collinear phase-matching study of terahertz-wave generation via difference frequency mixed in GaAs and Inp

The collinearly phase-matching condition of terahertz-wave generation via difference frequency mixed in GaAs and InP is theoretically studied. In collinear phase-matching, the optimum phase-matching wave hands of these two crystals are calculated. The optimum phase-matching wave bands in GaAs and lnP are 0.95-1.38μm and 0.7-0.96μm respectively. The influence of the wavelength choice of the pump wave on the coherent length in THz-wave tuning is also discussed. The influence of the temperature alteration on the phase-matching and the temperature tuning properties in GaAs crystal are calculated and analyzed. It can serve for the following experiments as a theoretical evidence and a reference as well.     

Effects of the alloy compositions on the phonon-polaritons in ternary mixed crystals

Composition dependence of bulk and surface phonon-polaritons in ternary mixed crystals are studied in the framework of the modified random-element-isodisplacement model and the Bom-Huang approximation. The numerical results for Several Ⅱ - Ⅵ and Ⅲ- Ⅴ compound systems are performed, and the polariton frequencies as functions of the compositions for ternary mixed crystals AlxGa1-xAs, GaPxAS1-x, ZnSxSe1-x, GaAsxSb1-x, GaxIn1-xP, and ZnxCd1-xS as examples are given and discussed. The results show that the dependence of the energies of two branches of bulk phonon-polaritons which have phonon-like characteristics, and surface phonon-polaritons on the compositions of ternary mixed crystals are nonlinear and different from those of the corresponding binary systems.     

New insert layer structure OLEDs

An insert layer structure organic electroluminescent device（OLED） based on a new luminescent material （Zn（salen）） is fabricated. The configuration of the device is ITO/CuPc/NPD/Zn（salen）/Liq/LiF/A1/CuPc/NPD/Zn（salen）/Liq/LiF/A1. Effective insert electrode layers comprising LiF（1nm）/Al（5 nm） are used as a single semitransparent mirror, and bilayer cathode LiF（1 nm）/A1（100 nm） is used as a reflecting mirror. The two mirrors form a Fabry-Perot microcavity and two emissive units. The maximum brightness and luminous efficiency reach 674 cd/m^2 and 2.652 cd/A, respectively, which are 2.1 and 3.7 times higher than the conventional device, respectively. The superior brightness and luminous efficiency over conventional single-unit devices are attributed to microcavity effect.