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本帖最后由 forevercgh 于 2009-1-3 22:16 编辑 7 ~) t: Q+ u$ q3 J& I P
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典型的100ohm LVDS差分传输线，Hyperlynx场解析器的概念性错误
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Field Solver Result：7 p6 `' ~ S5 o+ A
Differential Z = 100.5 ohms- \9 u2 |: U" P) a0 k$ x& n2 K( P
(suggested single line-to-line resistor for differential signals;
2 T9 a3 z, G! u works best for opposed, balanced transitions), S* E. @/ F" Y
: e4 k/ \6 \) p D8 KCommon-mode Z = 83.5 ohms（错在这里，这里求得的值是Even-mode Z，而非Common-mode Z）
6 p- T) T* ]1 C% s! f (suggested single line-to-ground resistor for common-mode signals;+ q# u7 [" i3 T' M5 ]
works best for all-1's or all-0's transitions)" ~ y( Y& Y/ m% ]% `
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Line-to-ground Z = 66.9 ohms
; N* [9 d a% f# n9 C) P1 g/ l (suggested single line-to-ground resistor for independent signals;
9 M/ n9 \" z3 ~ S r* F works best for mixed 1's and 0's transitions) |
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发表于 2009-1-3 22:13
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淘帖
支持！
反对！