Pair Routing and How can you use it for your next PCB Design

M1tr4188/ March 4, 2023/ Sport/ 0 comments

When you think about a PCB (Printed Circuit Boards) in general you can say it’s a piece of a board made out of fiberglass in which small and complex connections are etched with copper, but after designing hundreds of PCBs, I can tell you its a sophisticated piece of art where a perfectly designed circuit diagram is born, to become a part of the real world. A circuit or schematic has different types of connections, components, different levels of voltages, different levels of current requirements and all of these connections are reflected as traces in the printed circuit boards. Today, in this article, we will discuss a critical signal that is often missed or ignored by many designers who have just started layout or have limited experience. This review film will be all about Routing Differential-Pair Signals in a PCB.

Previously, we have discussed many different methods through which you can improve the quality and stability of your PCB design, you can check those out if you are interested.

Teardrops help in Improving the Quality and Stability of your PCB Design
Steps involved in Manufacturing a Flexible PCBs
Designing PCB Antennas for 2.4GHZ
Understanding Differential Pair Routing
Before understanding the various Differential Routing Techniques, it is important to know why we should take special attention to differential pair layouts. There are lots of components that take differential inputs. There are many components that use differential input. This is a transmission signal topology that takes the same input in the balanced form in a negative (inverted) and noninverted input.

Let’s take an example. See the below image of the USB signal coming from the USB port to the targeted component that uses the USB signal. The USB signal came from two different signal lines denoted as USB_DATA_P+ and USB_DATA_N-.

Share this Post

Leave a Comment

Your email address will not be published. Required fields are marked *