TUSB9261: TX耦合电容位置及PCB走线阻抗匹配

TX的耦合电容放在PCB哪个位置比较合适，TX和RX两对差分线的阻抗匹配多少欧姆合适

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您好，

耦合电容通常放置在PCB上靠近芯片的输出引脚位置，以减少信号路径上的寄生电感和电容，从而提高信号完整性。

每个差分对的走线应采用 90 Ω、（±15%） 差分阻抗。

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,

37℃：

90Ω是从耦合电容出来到HOST的阻抗吗

,

Links：

是的，90Ω的特性阻抗通常是指从耦合电容到主机（HOST）之间的差分信号对的阻抗，建议在设计时参考相关的PCB设计指南和制造商的建议，以确保最佳的信号完整性。

下面链接的10.1.1 High-Speed Differential Routing的介绍也可以关注下。

https://www.ti2k.com/wp-content/uploads/ti2k/DeyiSupport_接口_tusb9261.pdf

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Hungarian
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Indonesian
Slovak

Czech
Italian
Slovenian

Danish
Japanese
Spanish

Dutch
Klingon
Swedish

English
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Thai

Estonian
Latvian
Turkish

Finnish
Lithuanian
Ukrainian

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Urdu

German
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Welsh

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