标题: ???????·??????°??¨PCB??·??? ----zt
zing
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UID 79
精华 0
积分 710
帖子 701
阅读权限 10
注册 2004-8-30
状态 离线
发表于 2004-9-17 11:59  资料  个人空间  短消息  加为好友 
???????·??????°??¨PCB??·??? ----zt


?÷°???×??????ó?§ ???ê ?ì?ì
?????? ?????ò???è???????????·°???·?????????·???·????????è????????????????PCB???????????????????°?ú?ú?÷??PCB°???????·????¤???????ü?????¨?±?????????????????ê??????EMC·????????°??????????????????·??????ù??·????á???÷?????????è?????????????á????????????????????
???????ü????????????IBIS???????????ê??????????????
  
1 ?°??
??????????IC?è????????×??????????????????????á?????????ê?????¨SI??????????EMC?????????è??????????PCB°???????????????????????PCB°?????·?????·?????????????????·????§???????é?????????????????????????????ê????PCB°??????????§??????°ì·¨???è???¨·??ó???±????·??????à±??????????è?????????è????????????????????·??????°?ì???°?????????ù???????ù?¨·????±???????????????à???ò???è???°?ó?????????????í?è???ê?????°?é????·??????????·?è?????????????ò???????????????ù?????????í?è???????÷??????????????????????·?????·?·¨??·?????????????????

???????????·°?·?????????????·?????°???·???????·????????ù???è?????????ê???????±?ò?????ó?????????°°??ú?è?????÷?????÷?????????????????±?????????°?·?¨???ü?????????????????????????????ú×??è???????±·????????§????°???·????¨????PCB?è???ù±??ê?????ó??????????×???????????????EMC?????????°?ú????????·????????ò????SI???°?ì?°?????ò?????????à???°?ì??????????????????????·??????é?¤??????·????à±???????±????????????????????????????°????????·????????????è??·?????????·??????????????????÷?????·???????°?ì?????????????è?????????????????ü???????????????á?????¨????????



[???ù±?zing??2004-09-17 12:05 PM????±à??]



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zing
论坛支持团队



UID 79
精华 0
积分 710
帖子 701
阅读权限 10
注册 2004-8-30
状态 离线
发表于 2004-9-17 12:00  资料  个人空间  短消息  加为好友 
???°?ú?ú?÷?????é???????????í??ר??°??¨?????±????????33MHz??????????±????ì?????????????ó????±??¤?????????¤×÷????PCB???è????±????????????????ê??????EMC????????±???????×÷??????·??????????????¤?????????????????ê?????????????°EMC???????ì???????ê????????????????????×????à·??????????¨?????í????????????????????????????????


2 ·????÷??
?????¨??????°???·????÷??????1?ù?????×?????¨???????÷????·????????????ó???????è??·??????·?¨???????????è?????????è???????????????????????????????????????????±?¨????·????ì?é???????§????×??ó???????ù±??ê?????ó????°???·??????ì?é?????¤×÷????????

3 ·???????
??
??·??????????÷???è?????à????·?????????·?????????×??·?????ó???????????¨??·????????????¨??????????IBIS??Spice??????IBIS???????è??IC?÷????????????????I/O Buffer????????????????????????????Buffer??°??????·???????à??×÷??????IBIS????????????????????Buffer?????????ò??????Buffer?ú?ú???????????¨????·????÷?????????¨????·????????????°?ì??????IBIS?è????Buffer????????????×è???????????????±?????°?????????é???????????????????¤?????±??????????????????PCB°????????·????????SI????????EMC???°?±?ò·?????IBIS??????Spice?????à±????????????????¨?¨???????à????SPICE??????1/10??1/100????·????????ì?????è?è??I/O ???????????è?????§???????ì??????±??????????ò???×?????§??????????????????????????????????×??·??????·???????????·?×°?????ú?????????????ò?????????°?ú?ú?÷??PCB·??????÷????·?????????????IBIS??????

????IBIS???????????§???????????÷????????????±à???÷???ú??????×????¨??IBIS???????×???è???????¨??????±???????????????????°ü?¨????·?×°?à?????????????????????????????????????????????÷?????????????ó???????????ú?ú?§?????????????????????ó??×÷??????Hyplinx??IBIS±à???÷?????°?ú?ú?÷???ù?????????÷???ú?????à????IBIS?????????????÷???????????ó????·???×?????×?±???


[???ù±?zing??2004-09-17 12:07 PM????±à??]



 附件: 您所在的用户组无法下载或查看附件




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zing
论坛支持团队



UID 79
精华 0
积分 710
帖子 701
阅读权限 10
注册 2004-8-30
状态 离线
发表于 2004-9-17 12:00  资料  个人空间  短消息  加为好友 
4 ???è??·???????·???
?????????è??·??????°??????°????ó???÷?????????????ù±??·?¨?????°?ù???????±???????ó???????????????????è???????????????????ù???????????????°?÷???????????í?????à?????????è???????·?¨???????????????????????????????????????????????????¨???????í????????????????????????????????????????·??¤???????è?????±????????·????ó?????±?????????????????§???????????????ò???????è??·???????PCB?è????·???????????

???????????è???????????????ù?????????????±???????¨???????????¤×÷???ù×????????í?à??×÷?????????ù?????????????????±??????×??·???????????????????¤×÷???????????????ü???????????ê??????????·????×??????????????????×÷?????????°?ú?ú?÷???????ú±í????????×é?±???????????????è??·????????·?¨?????±???????????è???????????????????????ù??????????×???????

????????2?ù????????A?????§??????1??2??3??·?±???????B??????D??????C?á???à???????¨33MHz?????±??×÷?????????¤×÷?±??????????????A??B??C??????±??????ü????D????A???à???????????????????í???????ì???±???????????????????à?????????±???????á???¤?????????????¤???±?????ù?ù?è???¨?????×?????ó???????????????????ù???×???°?ì???????????????????????±???????????????±????1??±í??×??????í????8mil?¨203??m????×??¤??????306.97mil?¨7.8mm?????????±????±??????????±????3????±í???????×????????×??????í????8mil?¨203??m??????×??¤????826.98mil?¨21mm??,???????±????×????à????±????¤?????±????2????????×??????í????10mil?¨254??m??,????×??¤????3394.6mil?¨86.2mm???????ù???????????????·???í???·?????????è?????¨?±???????????????????????????????ü???????ò?????????????????±??????????????×????·?????????????ó???????????????·????????????????????????????????±????????????¤?????????±?????????±???????????????????á?ú?ú·??????ì???¨????±??ò?ú?ú???ù?????????????·???ó??×÷???????????????????????????????§????×????¤???????????ú???÷?????ò?????????????¤?????????±?????????????à????????????????????????????

?????×?????????????±??????·?±?????·????????á???¨????????·????÷?????¨?÷??????????3??????????1????????1?????¨??????????????????????????????±??í?à?à?????ü????????????????±??????±?????????????à???????????????????????¨???ù±??????????÷?????????????????????????????§??, ?ò???????±???????è?????ò????????????????±???????????????????????2????????2?????¨??????????????????????????????±??¤?????????????????§???????????é???????????±?????????????????????????????ù?????°?ì???ü???ü????????????????????????????????????????????×è?????????????°?ì????????????????×????????????¨???????????????????±?????????????????¨??????????????????????

[???ù±?zing??2004-09-17 12:08 PM????±à??]





·?????????
顶部
zing
论坛支持团队



UID 79
精华 0
积分 710
帖子 701
阅读权限 10
注册 2004-8-30
状态 离线
发表于 2004-9-17 12:00  资料  个人空间  短消息  加为好友 
????????×??±???????????????????¤?????????????á??????????????????3????????3???ù???????¨???????????????±?????????ì????×??à???????ó?????????????????????????????????ó????????????????·ù?????ó?????????????????????????á?ì?????????à?à???±??±??????????¨???ù???????±?????????????±???????á?????????????????????????ó??×÷???????????????????±?ò???ì?????????????é??·??ú??PCB?è???????§°??????¨????????????·???????????????·????????????ù???????????????ì???°?ì???ò?????????????±???????????????????????????????±??????????????????????·??????????è?????±????????3&#39????????????????AC???·????????×è??50??????????150pf??

???????????????????????????????±??????????·??????????????????÷???????¨???????????à???????????ù?????ó??·???????????????????????????????????????????????×????ì?ó?ó????????±í?÷????????±??????????????????¨???????????????????????????÷?¨?????????ù??????????

[???ù±?zing??2004-09-17 12:13 PM????±à??]



 附件: 您所在的用户组无法下载或查看附件




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顶部
zing
论坛支持团队



UID 79
精华 0
积分 710
帖子 701
阅读权限 10
注册 2004-8-30
状态 离线
发表于 2004-9-17 12:01  资料  个人空间  短消息  加为好友 
?¨????????·??????????????????á?????????????¤?????????????????ó???°?ì????????????×??????¤????????±????????????¤???????????????????è???????????????ò??????????°ì·¨??????????????????????

[???ù±?zing??2004-09-17 12:14 PM????±à??]



 附件: 您所在的用户组无法下载或查看附件




·?????????
顶部
zing
论坛支持团队



UID 79
精华 0
积分 710
帖子 701
阅读权限 10
注册 2004-8-30
状态 离线
发表于 2004-9-17 12:01  资料  个人空间  短消息  加为好友 
???°?ú?ú?÷???????????????????ó???í?à??????????±??????è????????????????×??????????????à?????????ü???à?????????????????????????????????ó?????????????????????????????????????????????±???????????????í?ó?????????ü???????????????ì???°?ì???????????????????è???ê?????????????????????????????????ù????????·??§?????????????????????ú?ú?????????í???????????????????????¤???????????????????à??????±????í????±??????????????é???????????????é??????????±???????????????????????????????????

?????????????????°?ú?ú?÷???????????????????¨????4??????????????????A????????A&#39????????????????Aggressor??1??B??B&#39?? Victim??C??C&#39??Aggressor??2???????ü???????????????????°?ì??×÷???¨????????A??C?????????????à?????????¨????????????????????????B????????????????±?????????????Victim?????????????????????????????°?ì???°??????????B&#39????????????????????????????????????5????????B&#39?????????????¨????????????????????????????Aggressor??1??Aggressor??2????????????Victim?ù?ì?????????¨????????Victim?????????????????????????????????????????????????????????????????????í?ó?????????????????°?ì???????????????????à??8 mil?¨203??m????????12 mil (305??m??????????????????????·ó???????à??(????????10mil (254??m????????5mil?¨127??m???????ó????·??????????????¨??????5?ù????????????????????Victim???????????ó?ó????????

???????????????ê??????????????????·??????±?ò??????????????·??????÷?????¨????????????????????EMC????????·????????ò????????????·???·??????????????±??????????·???????????????????????????????????

???????ù???????????????°?ú?ú?÷???????ü?????¨?±??????3?????????????????????????°?ó??????????????????·??????±?±????????3???????????????±??·??????á??????6?¨???±?????¤???????????????????????ú?ú??????·????????????????á??????·?????????government???????ù?????????????????????????ù?ú?ú?????ù??0Hz???±??????1GHz??·??§???í????????????????????·????????????à??????????????????????·???????????????government????????????×??????????????????????????????????????ù???????????????????????é??????????????????????·??????????????????????±???????????°?ù????AC??????????·?????×???????????government???????????¨??????????government???????????÷??????????·??????????ù????????????????·????????????????????????÷???????¤???????????????????±????????????????????????????????????????????????????????·??????????á????????????????
[???ù±?zing??2004-09-17 12:14 PM????±à??]



 附件: 您所在的用户组无法下载或查看附件




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顶部
zing
论坛支持团队



UID 79
精华 0
积分 710
帖子 701
阅读权限 10
注册 2004-8-30
状态 离线
发表于 2004-9-17 12:01  资料  个人空间  短消息  加为好友 
5,°???·???
?????±PCB°????????????ù±??ê???ó??????????°???PCB???ì?????°???¨??????°???·??????????????????ì?é??????·??????ù?????????ê????·????á???????????¨?÷????EMC·??????á???????????×·?????????

??????·????????????è???????????????ê??????EMC????????·?·¨????°???·????±???????í?à??????????????·????±????????????±????????±???????????è???????·?????????????í?à???????????????ê???ó????·??????????????????·?è???????????????????????????÷?????°?ì?????í?????¤????????????????????????·??????????í???????÷?????????????????à?????????????°?ì???????????????ê?????°???????¤????????????????????????????°???·???????????

??????????????????°???·??????????ê???????°?ú?ú?÷??????????·?????????????????·?????????·????ü?????§??????????????????victim?????°?ì????????×÷??aggressors???¨????victim×??ü???????????????????ó???????±?????ì??????????????????????????????×??ó??aggressor?????????°?ú?ú?÷?????§???ò??PCB?????????¨?????????ù????·?????·??????°??×??ó??aggressor??????????????????Hyplinx?? Boardsim?á????????·?·¨?????í????????????????????????????±¨?????ü?ì??????????°?????????????????????????????·?·¨???ê????Batch??Mode·????????????é???????????ó????·?????????????????????batch fashion?????????????á????????±¨?????????????????????°?ú?ú?÷??°???????·?????????????????????·?·¨???ò??????????±¨???ù?á???????????????ù???????¨??aggressors ??victim?????????ó??????×÷?????¨???ü?????è?????????????????????é?????????????????????????????????????????·?¨??aggressors ??victim?ó??·??????????ù±???????????·??????????????ù??

[???ù±?zing??2004-09-17 12:15 PM????±à??]



 附件: 您所在的用户组无法下载或查看附件




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zing
论坛支持团队



UID 79
精华 0
积分 710
帖子 701
阅读权限 10
注册 2004-8-30
状态 离线
发表于 2004-9-17 12:01  资料  个人空间  短消息  加为好友 
6 ?á??
??????×???×??÷?????????????????á?????????ê????????????EMC·????????è????????????PCB?è?????????????????????è?????????è???????????????ê????????????EMC·???????????????PCB?????ú?ú??????????±???°??ó??PCB·??¤?????????ó?????±?????·±??ú×????±?¤?????ú?ú????????????°???±???·±???????????????ì?í????±??????????°?ú?ú?÷??PCB?è????????????·??????????????????ê????????????EMC?????????????????§???????????¤×÷?????????¨?????????¤???§????
???????×
1 EMC Analysis User??s Guide LineSim EMC and BoardSim EMC, HyperLynx V6.0
2 Howard.Johnson and Martin Graham??High-Speed Digital Design?·
3 Steve Kaufer ?°Controlling crosstalk in high-speed digital systems?±
4 Lynne Green ?°Crosstalk for Printed Circuit Board Designers?±, HyperLynx, A Division of PADS Software, Inc
5 Altera Corporation ?°High-Speed Board Designs?±, Novermber 2001??Ver.4.0, Application Note 75


[???ù±?zing??2004-09-17 12:15 PM????±à??]





·?????????
顶部
????
项目组成员



UID 23
精华 2
积分 303
帖子 322
阅读权限 10
注册 2004-2-17
状态 离线
发表于 2004-10-11 17:43  资料  个人空间  短消息  加为好友 
?????§?°???ì?ì?ò??





??????
顶部
julia_zhu
新手上路
Rank: 1



UID 158
精华 0
积分 1
帖子 1
阅读权限 10
注册 2005-1-27
状态 离线
发表于 2005-1-27 17:39  资料  个人空间  短消息  加为好友  QQ
zing:?????§·???,??·????????QQ:110467492

顶部
zing
论坛支持团队



UID 79
精华 0
积分 710
帖子 701
阅读权限 10
注册 2004-8-30
状态 离线
发表于 2005-1-28 13:01  资料  个人空间  短消息  加为好友 
????????????????·???·???·?????????·????°?ò??????????°?





·?????????
顶部
wyqdustin
新手上路
Rank: 1



UID 172
精华 0
积分 4
帖子 4
阅读权限 10
注册 2005-2-23
状态 离线
发表于 2005-2-23 00:44  资料  个人空间  短消息  加为好友 
??????????·???±??¤?????ù??·???°???

顶部
游客 220.248.27.x
未注册









发表于 2005-2-23 12:50 
?????÷??

顶部
huang
新手上路
Rank: 1



UID 302
精华 0
积分 3
帖子 3
阅读权限 10
注册 2005-5-12
状态 离线
发表于 2005-5-12 15:08  资料  个人空间  短消息  加为好友 
hen a

顶部
huang
新手上路
Rank: 1



UID 302
精华 0
积分 3
帖子 3
阅读权限 10
注册 2005-5-12
状态 离线
发表于 2005-5-12 15:09  资料  个人空间  短消息  加为好友 
??°?

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