硬件常用参数设置

硬件常用参数设置

整理者：ZHOU 邮箱：zjvskn@gmail.com 

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常用阻抗参数

信号	Trace Impedance	Max trace length
Ethernet	95Ω ±15% differential; 55Ω ±15% single ended	<~100mm
USB	90Ω ±15% differential; 50Ω ±15% single ended	<200mm
LVDS	100Ω ±15% differential; 55Ω ±15% single ended	<500mm

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嘉立创阻抗控制

阻抗值	层数	板厚	差分	线距	方案	线宽	方案	线宽
90R	4	1.6mm	差分	5mil	方案一JLC7628	8.1mil	方案二JLC2313	5.17mil
95R	4	1.6mm	差分	5mil	方案一JLC7628	7mil	方案二JLC2313	4.54mil
100R	4	1.6mm	差分	5mil	方案一JLC7628	6.05mil	方案二JLC2313	4mil

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过孔尺寸

16/8mil  ≈ 0.4/0.2mm

20/10mil≈ 0.5/0.25mm

24/12mil≈ 0.6/0.3mm

40/20mil≈ 1.0/0.5mm

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