ÒøÓégegÓÅÔ½»á

http://edadoc.com/

ÖÐÎÄ

EN JP
ÊÖÒÕÎÄÕÂ-YD
ÐźÅÍêÕûÐÔ·ÂÕæ > ¸ßËÙPCB°åDDR5Êý¾ÝÐźŵij¤STUBÒª±³×êÂ𠣿

¸ßËÙPCB°åDDR5Êý¾ÝÐźŵij¤STUBÒª±³×êÂ𠣿

Ðû²¼Ê±¼ä£º2025-09-28 08:42

ÒøÓéÓÅÔ½»á¡¤GEG(Öйú)ÓÐÏÞ¹«Ë¾¹ÙÍø ÒøÓéÓÅÔ½»á¡¤GEG(Öйú)ÓÐÏÞ¹«Ë¾¹ÙÍø

ÉÏ´Î˵Á˹ý¿×stub¶ÔDDRxµØÖ·ÐźŵÄÓ°Ïì £¬Õâ´ÎÎÒÃǾÍÀ´¿´¿´Êý¾ÝÐźŵij¤stubÊÇ·ñÒª±³×꣡


¸ßËÙÏÈÌìÉúÔ±£ºÖÜΰ

ÉÏһƪÎÄÕ ¹ý¿×Stub¶ÔddrxµØÖ·ÐźŵÄÓ°Ïì ÌᵽʺóÃæ»áÓÐstub¶ÔÊý¾ÝÐźŵÄÓ°Ïì £¬½ñÌìÎÒÃǾÍÒ»ÆðÀ´¿´¿´°É¡£

  

ǰÎÄͨ¹ý¼¸¸ö·ÂÕæÀý×Ó¿´µ½ £¬³¤stub¶Ô3200MbpsÒÔÄÚµÄDDRxµØÖ·ÐźÅÀ´ËµÓÐÒ»¶¨µÄÀûÒæ £¬¹ØÓÚËÙÂʲ»ÊÇÄÇô¸ßµÄÐźţ¨²»Áè¼Ý8Gbps£© £¬ÈçDDR4¡¢DDR5ÉõÖÁLPDDR5 £¬ÎÒÃÇÊÇ·ñ¿ÉÒÔ°ÑÕâ¸ö½áÂÛÔÙÀ©Õ¹µ½ËÙÂʸü¸ßµÄÊý¾ÝÐźÅÉÏÄØ £¿ÓÚÊÇÎÒÃÇÓÖ×öÁËÈçÏÂһЩ·ÂÕæÀ´¿´¿´ÊÇ·ÇstubÔÚ¸ü¸ßËÙÂʵÄÊý¾ÝÉϵÄһЩ±ÈÕÕ¡£

ÕÕ¾ÉÉÏÎÄͬÑùµÄµþ²ãºÍÇý¶¯ £¬ÎüÊÕ½ÓÄÉODT60 £¬ÔÚÊý¾ÝÂÊΪ2400MbpsµÄʱ¼ä·ÂÕæ³öÀ´µÄÊý¾ÝÑÛͼÈçÏÂͼ1Ëùʾ¡£ 

358-1.png

ͼ1 ËÙÂÊ2400MbpsʱÊý¾ÝÐźÅдÑÛͼ

ºìÉ«L14²ã×ßÏßµÄÑÛͼ¿´ÆðÀ´Ñ۸߸ü¸ß £¬jitterҲСµã £¬¶ÔÓ¦µÄбÂÊÒ²´óÒ»µã £¬ËµÃ÷³¤stub¶ÔÊý¾ÝÐźÅÔÚ2400MbpsµÄËÙÂÊÏ»ù±¾Ã»Ê²Ã´Ó°Ïì £¬ÉõÖÁ»¹»áÉÔ΢ºÃµã¡£½øÒ»²½°ÑËÙÂÊÌá¸ßµ½3200Mbps £¬ÆäËûÎȹ̵ÄÇéÐÎÏÂÊÇ·ÇstubµÄÑÛͼ·ÂÕæÐ§¹ûÈçÏÂͼ2Ëùʾ¡£

 358-2.png

ͼ2 ËÙÂÊ3200MbpsʱÊý¾ÝÐźÅдÑÛͼ

¿ÉÒÔ¿´µ½ËÙÂÊÉÏÀ´Ö®ºó £¬¶ÌstubµÄÓÅÊÆÖð²½×îÏÈÌåÏÖ³öÀ´ÁË £¬Ñ۸ߺÍÑÛ¿í¶¼ÉÔ΢±È³¤stubµÄ²¼Ïß²ãÐźÅÒªºÃ¡£

ÎÒÃǽÓÏÂÀ´ÔÙ¿´¿´DDR5 6400MbpsËÙÂʵÄÇéÐÎ £¬ÓÚÊÇÆäËûÌõ¼þ¶¼ÎÈ¹Ì £¬Ö»Êǽ«ËÙÂÊÌáÉýµ½6400Mbps £¬¿ÅÁ£Ä£×ÓÒ²»»³ÉÖ§³ÖDDR5µÄ £¬ÈÔÈ»½ÓÄÉODT60µÄ¶Ë½Ó £¬·ÂÕæºó²¨ÐÎÈçÏÂͼ3Ëùʾ¡£

 358-3.png

ͼ3 ËÙÂÊ6400MbpsʱÊý¾ÝÐźÅдÑÛͼ

´Ó·ÂÕæÐ§¹û¿ÉÒÔ¿´³ö £¬ËÙÂÊÌáÉýµ½6400Mbpsʱ £¬³¤stubµÄL14²ã×ßÏßÐźÅÑÛͼ¼±¾ç±ä²î £¬Ñ۸ߺÍÑÛ¿í¶¼ÏÔ×ÅСÓÚ¶ÌstubµÄL5²ã×ßÏß £¬ËµÃ÷DDR5µÄÊý¾ÝÐźÅÕÕ¾ÉÒªÊʵ±Ë¼Á¿stubµÄÓ°Ïì £¬PCBÉè¼ÆÊ±¾ÍҪ˼Á¿stub½Ï¶ÌµÄ²ãÃæ¡£

    ͬʱÎÒÃÇÓÖÑéÖ¤ÁËijÆÕ±éʹÓõÄFPGAÖ§³ÖDDR5ÐźŵÄÄ£×Ó £¬ÔÚÆäËûÎȹ̵ÄÇéÐÎÏÂÖ»ÊÇ»»ÁËÖ÷¿ØµÄÄ£×Ó £¬·ÂÕæÐ§¹ûÈçÏÂͼ4Ëùʾ¡£

 358-4.png

ͼ4 ÁíÒ»Çý¶¯ËÙÂÊ6400MbpsʱÊý¾ÝÐźÅдÑÛͼ

»»ÁËÇý¶¯ºó £¬·ÂÕæ½áÂÛÕÕ¾ÉÒ»ÑùµÄ £¬³¤stubµÄÐźÅÑØ±ä»ºÁËÐí¶à £¬µ¼ÖÂÑ۸ߺÍÑÛ¿í¶¼±äСÁË¡£

   Ë¼Á¿µ½ÏÖÔÚLPDDR5µÄÓ¦ÓÃÒ²Ô½À´Ô½¶àÁË £¬ÇÒÎÒÃÇÒ²ÒѾ­·ÂÕæ¹ýÐí¶àÀ² £¬½ÓÏÂÀ´ÎÒÃǾÍÓÃLPDDR5Ä£×ÓÔÙÀ´ÑéÖ¤Ò»ÏÂÊÇ·ÇStubµÄÓ°Ïì¡£ÍØÆËÕÕ¾ÉÎÈ¹Ì £¬Çý¶¯ºÍÎüÊÕ»»³ÉÖ§³ÖLPDDR5µÄÄ£×Ó £¬ÔÚÊý¾ÝËÙÂÊ8533Mbps ʱ²»¿ªÆ½ºâµÄ·ÂÕæ±ÈÕÕЧ¹ûÈçÏÂͼ5Ëùʾ¡£

 358-5.png

ͼ5 ËÙÂÊ8533MbpsʱÊý¾ÝÐźÅдÑÛͼ

¿ÉÒÔ¿´µ½Óг¤stubµÄL14²ãÐźŵÄÑÛͼ¼±¾ç±ä²î £¬jitter±ä´óÁËÐí¶à £¬±È¶ÌstubµÄL5²ã×ßÏßµÄÐźÅÑ۸ߺÍÑÛ¿í¶¼Ð¡ÁË £¬Ô£Á¿Ïà¶Ô±äÉÙ £¬ËµÃ÷ËÙÂÊÔ½¸ßºóstubµÄÓ°ÏìÕվɽÏÁ¿´ó £¬´Ëʱֻ¹Ü¼á³Ö¶Ìstub²ã×ßÏß £¬ÖÁÓÚÊÇ·ñÒ»¶¨Òª±³×ê £¬ÕÕ¾ÉÒª¿´ÇéÐÎ £¬´ó´ó¶¼ÇéÐÎÏÂÕվɿÉÒÔ²»±ØµÄ £¬ÊÂʵ±³×êÐèÒªÌØÊâÔöÌí±¾Ç® £¬¿ÉÒÔÓÅÏÈ×ßstub¶ÌµÄ²ã¡£ÈôÊÇ×Åʵ×èÖ¹²»Á˳¤stubµÄ²ã £¬ÎÒÃÇÕվɿÉÒԲο¼¸ßËÙÐźÅstub³¤¶ÈµÄÂÄÀú £¬µ±stub³¤¶È(µ¥Î»mil)Áè¼Ý1.5±¶µÄ300/ÐźÅËÙÂÊ£¨µ¥Î»Gbps£© £¬Ö»¹Ü»ò±ØÐè±³×ê¡£²»Ë¼Á¿±¾Ç®µÄÇéÐÎÏ £¬µ±stub³¤¶È(µ¥Î»mil)Áè¼Ý300/ÐźÅËÙÂÊ£¨µ¥Î»Gbps£©Ê±¾Í¿ÉÒÔ×ö±³×êÁË¡£

358-6.png

˵µ½³¤stub¾ÍÏëµ½Á˱³×ê £¬¸÷ÈËÒ»ÆðÀ´ËµËµº£ÄÚ°å³§¾­±³×êºóµÄstub³¤¶È»¹Ê£¼¸¶à £¿½Ó´ýͲÛ


 ¹ØÓÚÒøÓégegÓÅÔ½»á£º

ÒøÓégegÓÅÔ½»á¿Æ¼¼½¨ÉèÓÚ2003Äê3Ô £¬ÉîÛÚ´´Òµ°åÉÏÊй«Ë¾ £¬¹ÉƱ´úÂë: 301366 £¬×¨×¢ÓÚ¸ßËÙPCBÉè¼Æ¡¢SI/PI·ÂÕæÆÊÎöµÈÊÖÒÕ·þÎñ £¬²¢ÎªÑз¢Ñù»ú¼°ÅúÁ¿Éú²úÌṩ¸ßÆ·ÖÊ¡¢¶Ì½»ÆÚµÄPCBÖÆ°åÓëPCBAÉú²ú·þÎñ¡£ÖÂÁ¦ÓÚ´òÔìÒ»Á÷µÄÓ²¼þÁ¢ÒìÆ½Ì¨ £¬¼ÓËÙµç×Ó²úÆ·µÄÓ²¼þÁ¢ÒìÀú³Ì £¬ÌáÉý²úÆ·ÖÊÁ¿¡£

ÒøÓégegÓÅÔ½»áPCB°å³§Î»ÓÚÉîÛÚ¼°Ö麣 £¬Ìṩ2-120²ã¸ßËÙ¡¢¸ßÆ·ÖÊ¡¢¿ì½»ÆÚµÄPCBÉú²ú·þÎñ¡£ÎÒ˾ÏÖÒÑÔÚÉîÛÚ¡¢Ö麣¡¢ÉϺ£¡¢³É¶¼¡¢³¤É³¡¢Ìì½òÉèÁ¢Áù¼ÒPCBA¹¤³§ £¬³§·¿Ãæ»ý15ÍòƽÃ× £¬ÏÖÓÐ60ÓàÌõSMT²úÏß £¬×¨×¢¸ßÆ·ÖʵÄÑз¢¿ì¼þ¡¢ÅúÁ¿µÄSMTÌùƬ¡¢ºóº¸¡¢×é×°µÈ·þÎñ¡£

ÍøÕ¾µØÍ¼