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本帖最后由 forevercgh 于 2009-1-3 22:16 编辑 ) C. t S# |( K* e
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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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, S+ y8 ^. q7 I1 j0 p$ n( aField Solver Result：
+ n$ F% m! C. U, @4 t" E4 f( RDifferential Z = 100.5 ohms
% s. \3 w# V# W' M4 N& X (suggested single line-to-line resistor for differential signals;! W0 f7 d; q2 L4 p$ W
works best for opposed, balanced transitions)2 T, K4 b7 j5 _) K2 X# W6 A/ Y
9 n/ K) t0 s1 d$ Q [6 U* _Common-mode Z = 83.5 ohms（错在这里，这里求得的值是Even-mode Z，而非Common-mode Z）; v4 @; A+ f+ k$ T( s) e, w3 O- {, y
(suggested single line-to-ground resistor for common-mode signals;0 l* x! Q5 N- b5 x
works best for all-1's or all-0's transitions)
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; ?5 h/ L6 \( X6 kLine-to-ground Z = 66.9 ohms
- r1 y7 k) B5 b; A (suggested single line-to-ground resistor for independent signals;
% ~7 M9 u, j+ P9 G4 [" |. k7 u; j1 I ?# h 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！