ÈçºÎʹÓÃSI9000½øÐÐPCB³£¹æ×迹¼ÆËã

SI9000³£¹æ×迹¼ÆËã

³£¹æÐźŷÖΪ΢´øÏߺʹø×´Ïߣ¬Î¢´øÏßÖ¸¸ÃÐźÅÏßÖ»ÓÐÒ»¸ö²Î¿¼Æ½Ã棨±íµ×²ã£©£¬´ø×´ÏßÖ¸¸ÃÐźÅÏßÔÚÁ½¸ö²Î¿¼Æ½ÃæÖ®¼ä£¨Äڲ㣩£¬¹Ê×迹¼ÆËãÐèҪѡÔñ²»Í¬Ä£ÐÍÀ´Íê³É¡£

Ò»¡¢Íâ²ã£¨Î¢´øÏߣ©µ¥¶Ë×迹¼ÆËãÄ£ÐÍ

1.µ¥¶Ë×迹½á¹¹——>

2.µ¥¶Ë×迹ģÐÍ——>

3.ÉèÖÃÏàÓ¦²ÎÊý

˵Ã÷£º½éµç³£ÊýºÍ°å²ÄÓйØ£¬³£¹æFR4½éµç³£ÊýÔÚ4.2-4.5Ö®¼ä£¬³£¹æ°ë¹Ì»¯Æ¬½éµç³£Êý106£¨3.9£©¡¢1080£¨4.2£©¡¢2116£¨4.2£©¡¢7628£¨4.5£©£¬ÂÞ½Ü˹°å²ÄRO4350B½éµç³£ÊýÊÇ3.66£¬M6°å²Ä½éµç³£ÊýÔÚ3.3-3.5Ö®¼ä¡£

¶þ¡¢Íâ²ã£¨Î¢´øÏߣ©²î·Ö×迹¼ÆËãÄ£ÐÍ

1.²î·Ö×迹½á¹¹——>

2.²î·Ö×迹ģÐÍ——>

3.ÉèÖÃÏàÓ¦²ÎÊý

˵Ã÷£º³£¹æ²î·Ö¿ØÖÆ×迹100ohm£¬USB¿Ø90ohm£¬Typec¿Ø90ohm

ÒÔÏÂÊÇ1.6mm°åºñ³£¹æ°Ë²ã°åµÄ²ãµþ

1. 3¸öÐźŲã¡¢2¸öµØ¡¢Ò»¸öµçÔ´

2.ÉäƵ¸ô²ã²Î¿¼£¬Ïß¿í16mil

3.¹Ø¼üÐźÅÔÚS1²ã£¬×¢ÒâS2¿ç·Ö¸îÎÊÌ⣬ÊÊÓÃÓÚÔÓÏ߶àµÄÇé¿ö

A£®¸ù¾Ý΢´øÏßµ¥¶ËÄ£ÐÍ50ohm×迹¼ÆËãÈçÏ£¨Ïß¿í6£©£º

B£®¸ù¾Ý΢´øÏß²î·ÖÄ£ÐÍ×迹¼ÆËãÈçÏ£º

1.µ¥¶Ë×迹½á¹¹——>

2.µ¥¶Ë×迹ģÐÍ——>

3.ÉèÖÃÏàÓ¦²ÎÊý

1.²î·Ö×迹½á¹¹——>

2.²î·Ö×迹ģÐÍ——>

3.ÉèÖÃÏàÓ¦²ÎÊý

¸ù¾Ý³£¹æ8²ã°å²ãµþ¼ÆËãÄÚ²ã×迹. A£®Äڲ㵥¶Ë×迹ģÐÍ£º

S1£ºH1=16+1.2+4.3=21.5

H2=1.2+4.3=5.5

S1²ã50ohm£º5mil£¨ËµÃ÷£º×迹ÔÊÐíÎó²îÕý¸º10%£¬H1ºÍH2ÊýÖµ£©

S1ºÍS2²Î¿¼²ãÃæºñ¶ÈÏà²î½ÏС×迹Ïß¿íÒ»Ö£¨ËµÃ÷£ºÈç¹ûH1ºÍH2ÊýÖµÕýÈ·£¬H1ºÍH2¼´Ê¹µßµ¹£¬×迹±ä»¯ºÜС£©

S2£ºH1=4.3

H2=1.2+16+1.2+4.3=22.7

S2²ã50ohm£º5mil

S3£ºH1=4.3

H2=1.2+16=17.2

S3²ã50ohm£º5mil

B£®ÄÚ²ã²î·Ö×迹ģÐÍ£¨½éÖʺñ¶ÈºÍµ¥¶Ë×迹һÖ£©£ºS1£ºH1=16+1.2+4.3=21.5

H2=1.2+4.3=5.5

S2£ºH1=4.3

H2=1.2+16+1.2+4.3=22.7

S3£ºH1=4.3

H2=1.2+16=17.2

S1¡¢S2¡¢S3£º90ohm