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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" @0 v1 m! ^/ p+ h, `
USB:* @4 [0 b8 T1 M; i" d
IMPEDANCE:90 OHM ) U5 \5 }5 R5 l P7 E# ~( a
L1/L8:6/5.5 MIL 89.06 L3/L6:5.5/8 MIL 90.734 y4 H2 r4 R+ Y# @0 G- {( O/ c
HDMI:
$ P9 b8 h9 Q( q3 u, gIMPEDANCE:95 OHM
1 m5 g+ v# Q0 \" @4 _4 N1 VL1/L8:5.1/5.5 MIL 94.32 L3/L6:5.1/9 MIL 95.23
+ x' X8 R _/ BLVDS:1 o& S8 f! Q3 h7 b# z
IMPEDANCE:100 OHM
- b9 M2 s) N2 gL1/L8:5.1/7 MIL 99.95 L3/L6:5.1/10 MIL 96.31/ k: G8 \) N% u$ l8 q, P
h0 p/ K* V. L" K8 qDDR:
* ~0 Z/ b! }$ nCLK:
) P- I/ T! l# a, VIMPEDANCE:65 OHM
7 ~9 L5 K6 y2 E' T# a* X9 n3 WL1/L8:10.5/5 MIL 67.57 L3/L6:8.5/5 MIL 68.53
" u& e" o/ \$ E/ a7 l+ c1 J* l; E) t0 z: K8 R
DATA STROBE:
* ^* e/ k1 r. ` P4 W7 V; W. h9 KIMPEDANCE:85 OHM
. @/ u" k+ a, f1 cL1/L8:6.5/5 MIL 84.41 L3/L6:5.5/5.5 MIL 85.62
2 B& g& R0 B2 s( }0 y: m3 W" c( O9 }2 G7 Y6 O7 _6 H1 p
DATA CONTROL COMMAND:
$ C3 K4 N+ n+ D( J- DIMPEDANCE:37 OHM
: f4 e g! L$ o' v, X( f4 Q" YL1/L8:11.5 MIL 40.68 L3/L6:7.9 MIL 40.15" y5 L t' h6 @0 p) k, ^( F
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