福彩3D走势图

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以太网差分信号线在两层PCB板上的布线方法作者:朱贤武    发布时间:2020-3-4 18:21:48    被阅览数:次

  YITAIWANGTONGXUN,ZAIGONGYEQIANRUSHIXITONGZHONGSHIYONGFEICHANGPUBIAN。YITAIWANGDETONGXUNDEWENDINGXINGYUKEKAOXING,ZHIJIEJUEDINGLESHEBEIDEKEKAOXING。YITAIWANGXINHAOSHUYUGAOSUDECHAFENXINHAO,TADETEZHENGZUKANGZHIWEI100OU,YINCIZAIPCBSHEJISHI,JIUXUYAOANZHAOCHAFENXINHAOXIANBUXIANYAOQIU,SHEJIYITAIWANGCHAFENXINHAOXIANDEBUXIANCANSHU,SHIPCBCHAFENXINHAOXIANDEZUKANGZHIJINKENENGDIJIEJIN100OU。


  差分信号,是在2条信号线上进行传输,且这2条信号线上的信号的振幅相同,相位相反。这2条传输差分信号的信号线,就是一对差分信号线。差份信号线需具有特定的交流阻抗特性,以保证信号传输的稳定与可靠性。差分信号线的PCB布线有特殊的要求:等线宽、等线距、等长度、同层面,并且要设计为特定的交流阻抗值,即所谓的“阻抗匹配”。


  YAOSHIXIANCHAFENXINHAOXIANDEZUKANGPIPEI,JIANYISHIYONGJIALICHUANGWEIXINGONGZHONGHAOSHANGDEXIAOGONGJU“ZUKANGSHENQI”,TASHIJIANHUACANSHUYAOQIUDESI9000GONGJU:


以太网差分信号线在两层PCB板上的布线方法.png


  GAIGONGJUDESHIYONGFANGFABIJIAOJIANDAN:

福彩3D走势图  1、SHURUXUYAODEZUKANGZHI

  2、XUANZEPCBBANCENGSHU

  3、XUANBAPCBBANCHENGPINBANHOUDU

福彩3D走势图  4、XUANZE“CHAFENZUKANG”

  5、XUANZECHAFENXIANZHIQIANDEXIANJU。XUYAOZHUYI,ZHEILIDEXIANJU,SHIZHI2TIAOCHAFENXIANZHIJIANDEKONGJIANJULI,BUSHITAMENDEZHONGXINXIANJU。ZUIHOUDIANJI“JISUAN”ANNIU,JIKEDEDAOXIANGYINGDEXIANKUANCANSHU。


福彩3D走势图  LIRUYITAIWANGDECHAFENXINHAOXIAN,YAOQIUZUKANGPIPEIZHIWEI100OU,PCBBANHOUWEI1.6mmDE2CENGBAN,GENJUSI9000JISUANJIEGUO,KEYIDEDAO6.5milJIANJU、15milXIANKUANDEBUXIANCANSHU,JIUKEYIDEDAOBIJIAOJIEJINYAOQIUDE100OUZUKANGDECHAFENXINHAOXIAN。GAICANSHUYESHIJUEDADUOSHUPCBBANCHANGKEYISHENGCHANCHULAIDECANSHU,YINCIKEYICANKAOGAICANSHUSHEJIYITAIWANGCHAXINXIANDEBUXIAN。


  ZAIGONGKONGYINGYONGXITONGZHONG,QITACHANGYONGDECHAFENXINHAOHAIYOUUSB、LVDS、RS485ZONGXIAN、CANZONGXIANDENG。TAMENDECHAFENXINHAOXIANYEJUYOUTEDINGDEZUKANGYAOQIU,GENJUSI9000JISUANJIEGUO,QIPCBBUXIANCANSHURUXIABIAOSUOSHI,YIGONGCANKAO:


 差分信号阻抗要求线间距线宽 
以太网100Ω 10%6.5mil15mil
USB90Ω 10%5mil
10mil
LVDS100Ω 10%6.5mil15mil
RS485120Ω 10%8mil9.48mil
CAN120Ω 10%8mil9.48mil


福彩3D走势图  YOUYUZAI2CENGBANSHANGYAOSHIXIANZUKANGPIPEINANDUXIANGDUIGAOXIE,YINCI2CENGBANDEZUKANGPIPEIZHUYAOMUDESHIWEILESHICHAFENXINHAOXIANZUKANGZHIJINKENENGJIEJINSUOYAOQIUDETEZHENGZUKANGZHI,YISHISHUJUCHUANSHUJINKENENGKEKAOWENDING。RUYITAIWANGCHAFENXINHAOXIANCAIYONG8milJIANJU、7milXIANKUAN,TADEZUKANGZHIYUEWEI130OUZUOYOU,ZAIYINGCHUANGGONGSIDECESHIZHONG,JIUHUIZAITEDINGHUANJINGXIACHUXIANTONGXUNYICHANGDEQINGKUANG,YANZHONGSHIWANGLUOXIESHANGYEHUISHIBAI。


福彩3D走势图  YOUYURS485YUCANZONGXIANTONGXUNSUDUFEICHANGDI,YINCIJINANZHAOCHAFENXINHAOXIANDEYAOQIUBUXIANJIKE,BINGZAIJIEKOUDUANKOUBINGJIE120OUMUDIANZU,JIUKEYISHIXIANPIPEI。

YINGCHUANGGONGSISUOTIGONGDEQIANRUSHIGONGKONGZHUBAN,DUISUOYOUGAOSUCHAFENXINHAOXIAN,DOUJINXINGLEZUKANGPIPEISHEJI。KEYIFANGXINSHIYONG。

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