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本帖最后由 forevercgh 于 2009-1-3 22:16 编辑 / } b% b' v, G% L/ m' Q
8 Q; m' _ L5 @8 c" @ _3 j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：
/ u% E& o H* @! E1 ~$ ~Differential Z = 100.5 ohms
' d! u# m4 D1 R2 c (suggested single line-to-line resistor for differential signals;- M0 T6 u) m0 K& S% _
works best for opposed, balanced transitions)
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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）+ q* M) C& Z2 U5 `
(suggested single line-to-ground resistor for common-mode signals;3 Y8 I5 A8 K- g! U$ A- j, o4 z; a5 E
works best for all-1's or all-0's transitions)3 R0 T K" y. _% G+ l9 _6 Y0 g
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Line-to-ground Z = 66.9 ohms; L( h+ }! _ ]* f6 v1 @
(suggested single line-to-ground resistor for independent signals;
& n/ t5 U* F3 N. R: _6 p! 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！