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我自己计算的结果如下,不知道对不对,计算单端阻抗的时候我选H为4MIL,差分计算的时候我选H1=4MIL,H=14MIL,就是走线层绝缘材料的厚度和层压厚度,但是这两个值不知道应该参考哪里来的6 o3 P# Z2 i+ s' ^3 z; Z
USB:9 [) O2 ^2 W7 L) w5 e
IMPEDANCE:90 OHM
! ?) C1 x0 p$ ?1 b1 dL1/L8:6/5.5 MIL 89.06 L3/L6:5.5/8 MIL 90.737 i: c, i$ ?3 g( ?. v
HDMI:
3 W, w m# e. l' JIMPEDANCE:95 OHM
" _* @: \! I/ O0 M- x- L: J, {* C EL1/L8:5.1/5.5 MIL 94.32 L3/L6:5.1/9 MIL 95.23- h) H) i) j+ W3 n$ A
LVDS:& W9 ]' j4 c. S5 d+ z6 e
IMPEDANCE:100 OHM 8 }& S; @) m3 x6 P |
L1/L8:5.1/7 MIL 99.95 L3/L6:5.1/10 MIL 96.31: n- n+ O @" p! `7 V
7 ]: `- j; ~: p( [( ~( ^DDR:* k, c0 @; p* E4 h8 W
CLK:
% M1 ~* k% d3 cIMPEDANCE:65 OHM 2 p9 X9 ^, i. G
L1/L8:10.5/5 MIL 67.57 L3/L6:8.5/5 MIL 68.53
- g8 `! U2 r! z' ]; k
- R/ {3 W+ B ?3 E+ p7 E' lDATA STROBE:$ h1 K% r$ Z6 U$ t! ~5 M5 D
IMPEDANCE:85 OHM 5 ?1 R7 C2 R; w* K( f1 s. b& k
L1/L8:6.5/5 MIL 84.41 L3/L6:5.5/5.5 MIL 85.62
& i& D, H, F0 v# n4 i7 g$ x, Q3 K2 i# U& ]3 Y! n3 a
DATA CONTROL COMMAND:
+ L7 B0 V/ d+ E/ ?IMPEDANCE:37 OHM . B0 h0 Y) r* n
L1/L8:11.5 MIL 40.68 L3/L6:7.9 MIL 40.15" L, E8 L1 I" |9 K! ^0 E0 S
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