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高速PCB设计中的阻抗匹配 你都知道哪些

阻抗匹配是指在能量传输时,要求负载阻抗要和传输线的特征阻抗相等,此时的传输不会产生反射,这表明所有能量都被负载吸收了。反之则在传输中有能量损失。在高速线路板打样设计中,阻抗的匹配与否关系到信号的质量优劣。

1、PCB走线什么时候需要做阻抗匹配?

不主要看频率,而关键是看信号的边沿陡峭程度,即信号的上升/下降时间,一般认为如果信号的上升/下降时间(按10%~90%计)小

2022-09-09 08:00:02 下载 2 查看 5,228
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ucoslwiptcpip应用心得希望帮助

ucoslwiptcpip应用心得希望帮助
2016-07-19 20:41:02 下载 178 查看 1,024
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adc0808的应用

adc0808的应用,c语言源代码控制产生信号源
2016-12-24 10:01:03 下载 65 查看 1,025
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各种matlab算例应用

各种matlab算例应用,对matlab的初学者很大的帮助。
2014-11-24 00:02:02 下载 120 查看 1,041
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memory_test Memory Read/Write Access Test Memory read base Address : 0xc010000 Memory write bas

memory_test Memory Read/Write Access Test Memory read base Address : 0xc010000 Memory write base
2014-01-22 02:25:01 下载 25 查看 1,066
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设计和选用电源模块应考虑哪些性能参数

同样的输入输出电压、同样的功率、同样的封装,不同厂家的电源模块,哪个性能更好?对于一个性能优良的电源模块来说,需要测试的项目很多,而且这些性能之间是紧密联系的,本文挑选其中几个方面的性能进行对比阐述。
2022-12-23 20:20:02 下载 1 查看 6,228
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EEPROM 9346驱动程序 read and write and so on

EEPROM 9346驱动程序 read and write and so on
2015-05-06 10:17:01 下载 190 查看 1,137
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Pic 93c46 spi read/write

Pic 93c46 spi read/write
2015-10-07 10:53:01 下载 99 查看 1,064
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write erase secure for NXP LPC23XX

write erase secure for NXP LPC23XX
2016-01-23 10:52:02 下载 64 查看 1,075
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Serial ADC Interface write in VHDL based on xilinx cpld

Serial ADC Interface write in VHDL based on xilinx cpld
2016-05-15 00:24:01 下载 125 查看 1,045
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Write a database program that stores details of a photograph collection.

Write a database program that stores details of a photograph collection.
2013-12-02 19:35:02 下载 44 查看 1,077
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the filter program write myself,the effect is not bad ,look and kool

the filter program write myself,the effect is not bad ,look and kool
2016-09-20 00:37:02 下载 149 查看 1,055
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GPS read and write,retrieve time,loction from gps

GPS read and write,retrieve time,loction from gps
2016-12-05 20:17:02 下载 37 查看 1,066
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introduce how to write BSP between different embedded systems

introduce how to write BSP between different embedded systems
2014-01-21 16:47:01 下载 93 查看 1,051
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6437的evmdm6437_flash_write例程

6437的evmdm6437_flash_write例程
2014-01-16 21:35:10 下载 37 查看 1,039
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Some guide lines to write your project paper.

Some guide lines to write your project paper.
2017-09-14 20:34:02 下载 175 查看 1,094
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write flash through jtag for s3c4510

write flash through jtag for s3c4510
2013-12-10 08:11:08 下载 61 查看 1,099
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write code to read the PCI configuration information, there are two ways.

write code to read the PCI configuration information, there are two ways.
2015-05-09 20:28:07 下载 176 查看 1,081
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a file about net phone based on IP,write by VC++.

a file about net phone based on IP,write by VC++.
2014-09-08 07:45:04 下载 36 查看 1,076
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Dual Port RAM Asynchronous Read/Write 经过modelsim仿真

Dual Port RAM Asynchronous Read/Write 经过modelsim仿真
2016-02-12 20:15:02 下载 129 查看 1,123
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