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本帖最后由 forevercgh 于 2009-1-3 22:16 编辑 * d; E" _+ A# N0 H4 t" _) d) x. j
; a+ f) i, j& i( B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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% }6 n* J; u% B1 Z; gField Solver Result：6 U7 U) p/ @5 { | E F
Differential Z = 100.5 ohms
5 |" g% A( u1 f (suggested single line-to-line resistor for differential signals;; x1 S" }0 P, e6 {
works best for opposed, balanced transitions)$ _5 D# f' D8 ^: b+ H' c2 f6 X& B
; ^8 ?( ^; s9 P Q: wCommon-mode Z = 83.5 ohms（错在这里，这里求得的值是Even-mode Z，而非Common-mode Z）; r; [- b/ o: R0 v! [) u
(suggested single line-to-ground resistor for common-mode signals;
; u2 g2 v0 T4 s7 A! j% ?! U works best for all-1's or all-0's transitions)
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Line-to-ground Z = 66.9 ohms, [' L% o* v* ]/ {7 F
(suggested single line-to-ground resistor for independent signals;
3 e; Y$ X: G5 c# t& Y2 ~: D7 n 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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