Welcome FPGA engineers to join the official WeChat technical group. Clickthe blue textto follow us at FPGA Home – the largest pure FPGA engineering community in China. Introduction: When we conduct FPGA schematic and PCB design, we involve the pin definitions and package-related information of FPGA chips. This article provides relevant references for the Xilinx … Read more
Introduction Sharing an article I wrote previously. Recently, due to a price war between two PCB manufacturers, prices dropped multiple times in a single day, which was quite lively. Jiepei dropped to a minimum of 3 yuan per unit, while Jialichuang dropped to a minimum of 5 yuan per unit, both with free shipping via … Read more
RK3399 high-speed signal PCB design recommendations – Crystal oscillator design. In the PCB design of clock circuits, please pay attention to: When laying out, place the crystal circuit as close as possible to the clock pins of the RK3399; Use 4mil traces for signal routing, and keep them as short as possible to reduce trace … Read more
1 Introduction This article summarizes the hardware design experience based on a certain Bluetooth module and is intended for hardware design reference only. 2 Antenna Design 2.1 PIFA Antenna Design 2.1.1 Size Requirements The size of this antenna is derived from theoretical calculations based on frequency characteristics and has been validated through practical design experience, … Read more
With the continuous advancement of technology, the application of the RK3399 chip in consumer products has gradually become a trend. As a powerful embedded processor, the RK3399 is widely used in consumer electronics such as smart TVs, smart speakers, and smart cameras. When applying the RK3399 chip to these products, PCB design is particularly critical. … Read more
The Allwinner H3 SoC is a solution from Zhuhai Allwinner Technology aimed at complete 4K OTT boxes. It is based on the ARM Cortex-A7 quad-core architecture, supports H.265/HEVC 4K@30fps hardware decoding, and has a GPU of Mali400MP2 with a working frequency exceeding 600MHz. It also features an integrated t-Coffer based on ARM TrustZone security technology … Read more
Choosing measurement points for the temperature board should follow the principles below based on the complexity of the PCBA: 1. For one measurement point, select the BGA solder ball on the PCBA; 2. For two measurement points, select the “pins + pads” of the IC components on the PCBA; 3. For three measurement points, select … Read more
Solder joint processing in printed circuit board assembly (PCBA) is crucial, as the quality of solder joints directly affects the performance and reliability of the entire product. However, in the actual production process, issues of solder joint failure may arise. How can we reasonably address this issue? 1. Why Do Solder Joints Fail?① Improper Welding … Read more
Ban Mei Er feels that this article is truly a conscience of the industry, comprehensive and practical, and must be shared with friends in PCB design! 1. World Famous PCB Design Software Companies In the field of PCB design tools, there are three major companies competing in the Chinese market: Cadence, Mentor Graphics, and Altium. … Read more
With the gradual development of technology, various industries are increasingly integrating intelligence.For example, in traditional restaurants, the serving model used to involve human servers bringing dishes to customers’ tables. Now, some restaurants are beginning to equip each table with an iPad for self-service ordering, with delivery robots bringing the food to the table, which customers … Read more