在D/A转换电路中,针对双极性电压基准输出要求,使用运算放大器MCP606和MCP1525产生±2.5 V高精度电压基准,在打标软件中将图形打标和字符打标分开,能精确体现字号大小及字体变化的效果。给出了硬件电路设计方案及控制系统软件的实现方法。
上传时间: 2013-10-27
上传用户:牧羊人8920
中文版详情浏览:http://www.elecfans.com/emb/fpga/20130715324029.html Xilinx UltraScale:The Next-Generation Architecture for Your Next-Generation Architecture The Xilinx® UltraScale™ architecture delivers unprecedented levels of integration and capability with ASIC-class system- level performance for the most demanding applications. The UltraScale architecture is the industr y's f irst application of leading-edge ASIC architectural enhancements in an All Programmable architecture that scales from 20 nm planar through 16 nm FinFET technologies and beyond, in addition to scaling from monolithic through 3D ICs. Through analytical co-optimization with the X ilinx V ivado® Design Suite, the UltraScale architecture provides massive routing capacity while intelligently resolving typical bottlenecks in ways never before possible. This design synergy achieves greater than 90% utilization with no performance degradation. Some of the UltraScale architecture breakthroughs include: • Strategic placement (virtually anywhere on the die) of ASIC-like system clocks, reducing clock skew by up to 50% • Latency-producing pipelining is virtually unnecessary in systems with massively parallel bus architecture, increasing system speed and capability • Potential timing-closure problems and interconnect bottlenecks are eliminated, even in systems requiring 90% or more resource utilization • 3D IC integration makes it possible to build larger devices one process generation ahead of the current industr y standard • Greatly increased system performance, including multi-gigabit serial transceivers, I/O, and memor y bandwidth is available within even smaller system power budgets • Greatly enhanced DSP and packet handling The Xilinx UltraScale architecture opens up whole new dimensions for designers of ultra-high-capacity solutions.
标签: UltraScale Xilinx 架构
上传时间: 2013-11-13
上传用户:瓦力瓦力hong
白皮书:采用低成本FPGA实现高效的低功耗PCIe接口 了解一个基于DDR3存储器控制器的真实PCI Express® (PCIe®) Gen1x4参考设计演示高效的Cyclone V FPGA怎样降低系统总成本,同时实现性能和功耗目标。点击马上下载!
上传时间: 2013-11-16
上传用户:huangld
This white paper discusses how market trends, the need for increased productivity, and new legislation have accelerated the use of safety systems in industrial machinery. This TÜV-qualified FPGA design methodology is changing the paradigms of safety designs and will greatly reduce development effort, system complexity, and time to market. This allows FPGA users to design their own customized safety controllers and provides a significant competitive advantage over traditional microcontroller or ASIC-based designs. Introduction The basic motivation of deploying functional safety systems is to ensure safe operation as well as safe behavior in cases of failure. Examples of functional safety systems include train brakes, proximity sensors for hazardous areas around machines such as fast-moving robots, and distributed control systems in process automation equipment such as those used in petrochemical plants. The International Electrotechnical Commission’s standard, IEC 61508: “Functional safety of electrical/electronic/programmable electronic safety-related systems,” is understood as the standard for designing safety systems for electrical, electronic, and programmable electronic (E/E/PE) equipment. This standard was developed in the mid-1980s and has been revised several times to cover the technical advances in various industries. In addition, derivative standards have been developed for specific markets and applications that prescribe the particular requirements on functional safety systems in these industry applications. Example applications include process automation (IEC 61511), machine automation (IEC 62061), transportation (railway EN 50128), medical (IEC 62304), automotive (ISO 26262), power generation, distribution, and transportation. 图Figure 1. Local Safety System
上传时间: 2013-11-05
上传用户:维子哥哥
电子发烧友网核心提示:Altera公司昨日宣布,在业界率先在28 nm FPGA器件上成功测试了复数高性能浮点数字信号处理(DSP)设计。独立技术分析公司Berkeley设计技术有限公司(BDTI)验证了能够在 Altera Stratix V和Arria V 28 nm FPGA开发套件上简单方便的高效实现Altera浮点DSP设计流程,同时验证了要求较高的浮点DSP应用的性能。本文是BDTI完整的FPGA浮点DSP分析报告。 Altera的浮点DSP设计流程经过规划,能够快速适应可参数赋值接口的设计更改,其工作环境包括来自MathWorks的MATLAB和 Simulink,以及Altera的DSP Builder高级模块库,支持FPGA设计人员比传统HDL设计更迅速的实现并验证复数浮点算法。这一设计流程非常适合设计人员在应用中采用高性能 DSP,这些应用包括,雷达、无线基站、工业自动化、仪表和医疗图像等。
上传时间: 2014-12-28
上传用户:18888888888
电子发烧友网核心提示:医疗内窥镜的市场发展带来了各种挑战,例如,要求增强功能,更高的精度,更好的处理性能,以及更小的体积等。本文介绍Altera高级医疗内窥镜系统解决方案,它使用了1080p视频设计工作台、DSP 构建模块、参考设计,以及 Stratix® V、Cyclone® V 和 Arria® V FPGA 等。通过下文介绍,资深专家向您支招,教你懂得如何通过采用基于FPGA的方法来缩短高级医疗内窥镜系统的开发时间。 引言 对内窥镜检查的需求在不断增长,同时还需要不断改进检查过程,增强医疗设备的功能。全球竞争不断加剧,导致各种新功能的出现,新市场的变化也非常快,开发周期越来越短,工程团队必须集中精力提高核心竞争力,加强系统知识。工程师需要灵活的硬件平台和支持各种平台的工作台工具,使他们能够针对新标准或者标准的变化而对产品进行更新。此外,设计团队必须更高效的进行开发工作。Altera® 1080p 视频设计工作台和28-nm FPGA提供了灵活的系统方法来满足当前以及不断发展的功能需求。 不断增长的全球需求 很多因素导致对内窥镜检查的需求越来越强。今后数十年内,世界60岁以上的人口数量将会大幅度增长,对医疗卫生服务的需求也会随之增长。而且,胃肠道患病人口在不断增加,需要进行检查和治疗。越来越多的医生采用内窥镜检查方法。很多政府报销政策鼓励非置入式治疗,这有利于患者更快的恢复,从而降低了治疗总成本,患者的体验会更好。 很多国家增加了在医疗基础设施上的投入,特别是加大了医疗设备的采购。反过来,这些新市场需求也扩大了对下一代内窥镜系统的需求。设计团队体验到需求的不断增长,而全球竞争导致他们推迟其产品发布计划。
上传时间: 2014-12-28
上传用户:huxiao341000
电子发烧友网讯: Altera公司 28nm FPGA系列芯片共包括三大系列:Stratix V、Arria V与Cyclone V系列芯片。近日,Altera公司也正式宣布该三大系列芯片已全部开始量产出货。Altera公司凭借着其28nm FPGA芯片在性能和成本上的优势,未来的前景势必无法估量。通过本文对Altera公司 28nm FPGA系列芯片的基本性能、市场优势、型号差异以及典型应用等介绍,电子发烧友网小编将带领大家一起来感受Altera公司28nm FPGA系列芯片的“雄韬伟略”,深入阐述如何更好地为你未来的设计选择相应的Altera 28nm FPGA 芯片。
上传时间: 2013-11-21
上传用户:ZZJ886
为有效控制固态功率调制设备,提高系统的可调性和稳定性,介绍了一种基于现场可编程门阵列( FPGA)和微控制器(MCU) 的多路高压IGBT 驱动触发器的设计方法和实现电路。该触发器可选择内或外触发信号,可遥控或本控,能产生多路频率、宽度和延时独立可调的脉冲信号,信号的输入输出和传输都使用光纤。将该触发器用于高压IGBT(3300 V/ 800 A) 感应叠加脉冲发生器中进行实验测试,给出了实验波形。结果表明,该多路高压IGBT驱动触发器输出脉冲信号达到了较高的调整精度,频宽’脉宽及延时可分别以步进1 Hz、0. 1μs、0. 1μs 进行调整,满足了脉冲发生器的要求,提高了脉冲功率调制系统的性能。
上传时间: 2013-10-22
上传用户:zhulei420
这是一款U段、V段频率接收机,搜索速度较快,但说明书基本上都是英文的,中文说明书较少,需要的TX可以作参考
标签: GREAmerica 120 PSR 说明书
上传时间: 2013-10-24
上传用户:3291976780
所谓光猫,是泛指将光以太信号转换成其它协议信号的收发设备。光猫也称为单 端口光端机, 是针对特殊用户环境而设计的产品, 它利用一对光纤进行单 E1或单 V.35 或单10BaseT 点到点式的光传输终端设备。该设备作为本地网的中继传输设备,适用 于基站的光纤终端传输设备以及租用线路设备。 而对于多口的光端机一般会直称作“光 端机”, 对单端口光端机一般使用于用户端, 工作类似常用的广域网专线(电路)联网用 的基带 MODEM,和有称作“光 MODEM”、“光猫”、“光调制解调器”。
上传时间: 2013-11-21
上传用户:ming52900