In the field of PCB design, electronic engineers need to create reasonable routing layouts to enhance circuit performance and stability. However, many beginners lack experience and are prone to making mistakes in routing. Therefore, this article will share ten routing rules to help you avoid interference pitfalls and create better circuit boards! 1. Area Isolation: … Read more
When designing PCBs, there are many small details to pay attention to. Let’s see if you are a detail-oriented person. 1. When calculating the routing length, include the length of the vias and pads that the signal passes through. 2. During routing, avoid right angles and sharp angles that can cause signal reflections. Preferably use … Read more
PCB Circuit Advanced Schematic Design The advanced design of PCB schematics requires integration of engineering practices, signal integrity, design specifications, and advanced tool functionalities. 1.Modular and Hierarchical Design Modular Segmentation: Divide complex circuits into independent modules based on functionality (such as power supply, MCU, communication interfaces) for easier reuse and maintenance. Hierarchical Schematics: Use hierarchical … Read more
In the era of big data, the signal transmission rates of various devices, whether in data center solutions, automotive and industrial equipment, or everyday consumer electronics, are increasing at an unprecedented pace. For example, PCIe 6.0 has reached a transmission rate of 64Gbps; USB4 follows closely with a speed of 40Gbps; and the parallel bus … Read more
“ In the printed circuit board assembly (PCBA) of 5G communication devices, radio frequency (RF) interference has become a critical factor affecting communication quality and user experience. Effectively suppressing RF interference to enhance the performance of 5G communication devices has become a focal point of current research.” 01 — 5G Communication Frequency Bands and Sources … Read more
Previously, we wrote an article specifically about oscilloscope probes, and recently a friend asked for a detailed introduction to “differential probes”. Today, I will organize the information.Definition of Differential Probes A differential probe is an electronic measurement tool used foraccurately measuring the voltage difference (differential signal) between two test points rather than the voltage at … Read more
Previously, we discussed various aspects of crosstalk, including its sources, formation, types, simulation, and testing methods. We also introduced some methods to reduce crosstalk, one of which is to protect important signal networks with ground networks. This additional ground network is commonly referred to as a guard trace, as shown in the figure below: Can … Read more
In the Arduino ecosystem, the PCB design of shields is a professional task that requires comprehensive consideration of multiple factors. This article will detail the key points in the design of Arduino shields from a technical perspective of PCB layout design.1. Physical Dimensions and Mechanical ConstraintsStandard Size SpecificationsThe Arduino shield must strictly adhere to the … Read more
modetest -M rockchip ❝ When connecting an EDP interface display to the motherboard, if the error “LT CR Failure” (Link Training & Clock Recovery failure) occurs, the following are possible causes and solutions: 1. Core Reasons for Link Training Failure Poor Signal Integrity The EDP signals (differential pairs) from the motherboard to the display may … Read more
I have a demo board with an integrated MOSFET Buck power supply. Although the circuit is simple, the layout is quite textbook-like. Here are some key design points of this circuit: 1. Phase Plane The phase plane, which is the plane connecting the inductor and the power IC, is the dirtiest signal (high current, high … Read more