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
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 |
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 |
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
