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PCB设计中3W原则20H原则和五五原则都是什么

3W原则

在PCB设计中为了减少线间串扰,应保证线间距足够大,当线中心间距不少于3倍线宽时,则可保持大部分电场不互相干扰,这就是3W规则。3W原则是指多个高速信号线长距离走线的时候,其间距应该遵循3W原则,例如时钟线,差分线,视频、音频信号线,复位信号线及其他系统关键电路需要遵循3W原则,而并不是板上所有的布线都要强制符合3W原则。

 

满足3W

2021-11-08 01:30:02 下载 10 查看 4,762
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Serpent算法,想必搞相关行业的朋友看到压缩文件名字就知道是什么了!

Serpent算法,想必搞相关行业的朋友看到压缩文件名字就知道是什么了!
2013-12-19 02:34:05 下载 27 查看 1,117
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Scalable k-means software and test datasets This package (a Unix tar file, gzipped) contains the sou

Scalable k-means software and test datasets This package (a Unix tar file, gzipped) contains the source
2015-04-05 00:18:02 下载 164 查看 1,113
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infineon C515C RTX51 example. it contains example on using this device

infineon C515C RTX51 example. it contains example on using this device
2013-12-14 11:35:02 下载 38 查看 1,057
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Source files for pxa ac97 sound driver The packet contains the files that is listed below driv

Source files for pxa ac97 sound driver The packet contains the files that is listed below driver
2013-12-31 23:13:01 下载 167 查看 1,158
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Contains Holger Gruen s Making The Grass code fragments/examples.

Contains Holger Gruen s Making The Grass code fragments/examples.
2015-05-28 20:02:03 下载 92 查看 1,063
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-- Booth Multiplier -- This file contains all the entity-architectures for a complete -- k-bit x k

-- Booth Multiplier -- This file contains all the entity-architectures for a complete -- k-bit x k-bit
2015-07-02 00:50:01 下载 186 查看 1,119
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he Software folder contains the following files :- 1) Sram_Interface.exe ----------> EXE Fil

he Software folder contains the following files :- 1) Sram_Interface.exe ----------> EXE File
2015-09-28 20:29:01 下载 45 查看 1,100
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A .NET Path Finder Library Path Finder Library is a .NET library that currently contains one type c

A .NET Path Finder Library Path Finder Library is a .NET library that currently contains one type called
2013-12-14 03:47:01 下载 45 查看 1,087
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stk接口 This file contains a summary of what you will find in each of the files that make up your wo

stk接口 This file contains a summary of what you will find in each of the files that make up your work
2015-10-09 20:08:01 下载 65 查看 1,146
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It support IPv4 and IPv6 unicast and multicast and contains a trivial sender and a trivial receiver

It support IPv4 and IPv6 unicast and multicast and contains a trivial sender and a trivial receiver that
2013-12-14 04:55:02 下载 104 查看 1,147
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Contains source to demonstrate how to copy/delete files and folders with HFS+ APIs. It also demonstr

Contains source to demonstrate how to copy/delete files and folders with HFS+ APIs.
2016-01-14 20:36:02 下载 33 查看 1,077
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This directory contains code implementing the K-means algorithm. Source code may be found in KMEANS

This directory contains code implementing the K-means algorithm.
2014-01-15 13:18:09 下载 45 查看 1,149
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This README file contains important

This README file contains important information about your new software.
2014-11-18 12:25:44 下载 171 查看 1,085
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This zip contains a simple paper of SPIHT generated streams run length encoded ... later i ll be pos

This zip contains a simple paper of SPIHT generated streams run length encoded ... later i ll be posting
2013-12-01 18:44:14 下载 132 查看 1,091
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This tar file contains the Linux CPU frequency driver for AMD Athlon64 / Opteron processors.

This tar file contains the Linux CPU frequency driver for AMD Athlon64 / Opteron processors.
2014-12-08 00:45:02 下载 56 查看 1,126
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his file contains a summary of what you will find in each of the files that make up your CC applica

his file contains a summary of what you will find in each of the files that make up your CC application
2016-05-04 00:11:02 下载 124 查看 1,117
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The AP library for C++ contains a basic set of

The AP library for C++ contains a basic set of mathematical functions and collection classes needed to
2014-09-11 14:30:29 下载 52 查看 1,088
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The package contains a Reed-Solomon coding and decoding program, derived partly from Phil Karn/Rob

The package contains a Reed-Solomon coding and decoding program, derived partly from Phil Karn/Robert
2013-12-11 21:51:02 下载 103 查看 1,129
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This file contains a summary of what you

This file contains a summary of what you will find in each of the files that make up your ac1080 application
2014-01-25 01:58:02 下载 92 查看 1,085
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