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技术书籍 SystemVerilog for Design
·SystemVerilog is a rich set of extensions to the IEEE 1364-2001 Verilog Hardware Description Language (Verilog HDL). These extensions address two major aspects of HDL-based design. First, modeling ver
教程资料 Cadence软件安装手册
在PC机上运行cadence需要先运行命令:source filename,此处filename指.cshrc,或其他具有该文件内容但名字不同的文件,该文件必须有set DISPLAY 本机IP:0.0 语句,同时应将其他雷同设置封住.可以先从工作站上下载.cshrc文件,然后用notepad修改显示设置相,不可用其他编辑器,否则文本文件格式会不一样.记住,必须将显示器设置为256 ...
模拟电子 双绞线和低通滤波器降低EMI_RFI
Abstract: Alexander Graham Bell patented twisted pair wires in 1881. We still use them today because they work so well. In addition we have the advantage ofincredible computer power within our world. Circuit simulators and filter design programs are available for little or no cost. We combine the ...
模拟电子 精密DAC和看门狗提高模拟输出安全
Abstract: Using a DAC and a microprocessor supervisor, the system safety can be improved in industrial controllers, programmablelogiccontrollers (PLC), and data-acquisition systems. The analog output is set to zero-scale (or pin-programmable midscale) when amicroprocessor failure, optocoupler fail ...
模拟电子 数字集成电路设计Digital Integrated Circuit Design
 
This unique guide to designing digital VLSI circuits takes a top-down approach, reflecting the natureof the design process in industry. Starting with architecture design, the book explains the why andhow of digital design, using the physics that designers need to know, and no more.Coverin ...
模拟电子 PID控制原理详解
比例控制(P)是一种最简单的控制方式。其控制器的输出与输入误差信号成比例关系。根据设备有所不同，比例带一般为2～10％(温度控制)。但是，仅仅是P 控制的话，会产生下面将提到的off set (稳态误差)，所以一般加上积分控制(I)，以消除稳态误差。
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模拟电子 ADC转换器技术用语 (A/D Converter Defi
ANALOG INPUT BANDWIDTH is a measure of the frequencyat which the reconstructed output fundamental drops3 dB below its low frequency value for a full scale input. Thetest is performed with fIN equal to 100 kHz plus integer multiplesof fCLK. The input frequency at which the output is −3dB relati ...
PCB相关 PCB抄板密技
第一步，拿到一块PCB，首先在纸上记录好所有元气件的型号，参数，以及位置，尤其是二极管，三极管的方向，IC缺口的方向。最好用数码相机拍两张元气件位置的照片。
第二步，拆掉所有器件，并且将PAD孔里的锡去掉。用酒精将PCB清洗干净，然后放入扫描仪内，启动POHTOSHOP，用彩色方式将丝印面扫入，并打印出来备用。
第三 ...
PCB相关 PCB各层定义及描述
TOP/BOTTOM SOLDER（顶层/底层阻焊绿油层）：顶层/底层敷设阻焊绿油，以防止铜箔上锡，保持绝缘。在焊盘、过孔及本层非电气走线处阻焊绿油开窗。