Altera FPGA 差分信号初识(1)_fpga差分对怎么使用-优快云博客

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本文介绍了差分信号技术，一种使用两个互补信号进行电气信息传输的方法。差分信号技术通过对比两条线路间的电压差来传输数据，提高了信号的稳定性和抗干扰能力。文章详细解释了差分信号的优势，包括减少电子串扰、电磁干扰，以及实现恒定的特征阻抗，使其成为高速信号传输和高质量音频信号路径中的关键技术。

Altera FPGA 差分信号初识(1)

Differential Signaling

以下介绍来源于维基百科Differential Signaling：

Introduction

Differential signaling is a method for electrically transmitting information using two complementary signals. The technique sends the same electrical signal as a differential pair of signals, each in its own conductor. The pair of conductors can be wires (typically twisted together) or traces on a circuit board. The receiving circuit responds to the electrical difference between the two signals, rather than the difference between a single wire and ground.

The opposite technique is called single-ended signaling. Differential pairs are usually found on printed circuit boards, in twisted-pairand ribbon cables, and in connectors.

谷歌翻译： 差分信令 是使用两个互补信号电传输信息的方法。该技术发送与差分信号对相同的电信号，每个信号都在其自己的导体中。这对导体可以是电路板上的导线（通常是绞合在一起）或迹线。接收电路响应两个信号之间的电差，而不是单个线和地之间的差异。

相反的技术称为单端信令。差分对通常存在于印刷电路板上，双绞线和带状电缆中，以及连接器。