PCB Manufacturer & PCB Assembly

Terminal termination of high speed PCB

Posted on September 21, 2018 by G

In high-speed PCB digital circuit systems, impedance mismatch on the transmission line will cause signal reflection and signal distortion such as overshoot, undershoot and ringing, and when the delay TD of the transmission line is greater than 20% of the signal rise time RT, the reflection The impact can't be ignored, or it will bring signal integrity problems. The method of reducing the reflection is: matching the source impedance with the transmission line impedance according to the characteristic impedance of the transmission line at the driving end thereof, or matching the load impedance with the transmission line impedance at the receiving end, so that the source reflection coefficient or the load reflection coefficient is zero.

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Characteristic Impedance PCB Design of Material Composition Structure

Posted on September 17, 2018 by G

Design of the material composition of the board

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Selection of PCB materials in high frequency electronic products

Posted on September 17, 2018 by G

The manufacture of high frequency printed circuit boards is very important for the choice of substrate materials. When choosing a substrate material, you should pay attention to the following four principles.

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Control characteristic impedance PCB design technology

Posted on September 17, 2018 by G

The current worldwide demand for environmental protection has made electronic products more demanding in the miniaturization of the Ministry of Energy. This has also spurred the advancement of high-speed and large-capacity electronic products for data and information processing. On the other hand, IT products that are personally demanded are also moving toward functional integration, high-performance (high-speed), and low-consumption power. In the signal transmission mode of electronic products, the parallel transmission mode develops toward a continuous mode. And the way in which optical transmissions have been added to electrical transmissions has begun to emerge. The high integration and high frequency development of electronic components has led to a continuous increase in the demand for high-frequency printed circuit boards.

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Routing arrangements between printed circuit board components

Posted on September 14, 2018 by G

(1) Cross circuit is not allowed in the printed circuit. For the lines that may cross, it can be solved by “drilling” or “winding”. That is, let a certain lead be "drilled" from the gap under other resistors, capacitors, and triodes, or "wrap" from one end of a lead that may cross. How to make the circuit complicated in special cases, to simplify the design It is allowed to bridge the wires to solve the cross circuit problem.

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Signal integrity design for crosstalk control

Posted on September 14, 2018 by G

The high-speed PCB layout technology driven by electrical rules realizes the design strategy of signal crosstalk control.

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Crosstalk Analysis in High Speed PCB Design

Posted on February 14, 2023 by G

Learn how to reduce signal interference and optimize your high-speed PCB design with crosstalk analysis techniques. Discover practical tips and insights in this comprehensive guide.

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Tag: Crosstalk

PCB circuit anti-interference measures

Posted on September 10, 2018 by G

In the design of electronic systems, in order to avoid detours and save time, the anti-interference requirements should be fully considered and avoided, and remedial measures against interference should be avoided after the design is completed. There are three basic elements that form interference:

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How to strengthen anti-interference ability in PCB design

Posted on September 10, 2018 by G

To get the best performance from an electronic circuit, the board is the support for the circuit components and devices in the electronics. Even if the schematic design of the circuit is correct and the printed circuit board is not properly designed, it will adversely affect the reliability of the electronic product. When designing a printed circuit board, it is important to use the correct method, follow the general principles of PCB design, and conform to the requirements of the anti-jamming design and the layout of the wires. In order to design a PCB of good quality and low cost, the following general principles should be followed:

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"Smart layout" PCB board

Posted on September 10, 2018 by G

5 Tips

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What are the common problems with EMC?

Posted on September 06, 2018 by G

10 questions and answers.

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High-speed PCB EMC design (2)

Posted on September 06, 2018 by G

Differential mode current and common mode current.

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High-speed PCB EMC design (1)

Posted on September 06, 2018 by G

Generalization of PCB design principles (1-30)

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PCB layout technology

Posted on September 03, 2018 by G

In general, the most basic process of designing a board can be divided into three major steps.

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PCB advanced design electromagnetic interference and suppression

Posted on September 03, 2018 by G

Electromagnetic interference is caused by electromagnetic effects. As components and wiring on the PCB become more and more dense, electromagnetic interference will occur if improperly designed. In order to suppress electromagnetic interference, the following measures can be taken:

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How to avoid transmission line effects in high speed PCB design?

Posted on September 03, 2018 by G

4 methods and solutions

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Source synchronization timing relationship and simulation examples

Posted on August 30, 2018 by G

The so-called source synchronization means that the clock strobe signal CLK is transmitted by the driver chip along with the transmission data, and it does not use an independent clock source like the common clock synchronization. In the source synchronous data transceiving, the data is first sent to the receiving end, and the strobe clock is sent to the receiving end for sampling and latching the batch of data after a short time. The schematic diagram is shown in Figure 2. The timing analysis of source synchronization is simpler than the synchronization of common clocks. The analysis methods are very similar. The analysis formula is directly given below:

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Timing analysis of data retention time

Posted on August 30, 2018 by G

In order to successfully latch data into the device, the data signal must remain active at the input of the receiving chip for a sufficient amount of time to ensure that the signal is correctly latched by the clock sample. This time is called hold time. In the common clock bus, the receiver buffer latches the data with the second clock edge while latching the next data to the data transmitter on the driver side. Therefore, in order to satisfy the receiving end holding time, it is necessary to ensure that the valid data is latched into the receiving terminal flip-flop before the next data signal arrives, which requires that the delay of receiving the clock CLKA is smaller than the delay of receiving the data signal.

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Timing analysis of data setup time

Posted on August 30, 2018 by G

One of the two necessary conditions for data transmission: the data at the input of RECEIVER generally has the required setup time Tsetup, which means that the data must be valid before the minimum time valid for the clock, and the time at which the data signal arrives at the input should be early enough. At the clock signal, the inequality satisfied by the settling time can be derived.

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Analyze timing analysis and simulation strategy in high speed PCB design

Posted on August 27, 2018 by G

In the field of network communication, in ATM switches, core routers, Gigabit Ethernet, and various gateway devices, the system data rate and clock rate continue to increase, and the operating frequency of the corresponding processor is also higher; data, voice, and image transmission.

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Tag: hardware design high-speed circuits

Terminal termination of high speed PCB

Characteristic Impedance PCB Design of Material Composition Structure

Selection of PCB materials in high frequency electronic products

Control characteristic impedance PCB design technology

Routing arrangements between printed circuit board components

Signal integrity design for crosstalk control

Crosstalk Analysis in High Speed PCB Design

PCB circuit anti-interference measures

How to strengthen anti-interference ability in PCB design

"Smart layout" PCB board

What are the common problems with EMC?

High-speed PCB EMC design (2)

High-speed PCB EMC design (1)

PCB layout technology

PCB advanced design electromagnetic interference and suppression

How to avoid transmission line effects in high speed PCB design?

Source synchronization timing relationship and simulation examples

Timing analysis of data retention time

Timing analysis of data setup time

Analyze timing analysis and simulation strategy in high speed PCB design

Categories

Recommended Article:

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Terminal termination of high speed PCB

Characteristic Impedance PCB Design of Material Composition Structure

Selection of PCB materials in high frequency electronic products

Control characteristic impedance PCB design technology

Routing arrangements between printed circuit board components

Signal integrity design for crosstalk control

Crosstalk Analysis in High Speed PCB Design

PCB circuit anti-interference measures

How to strengthen anti-interference ability in PCB design

&quot;Smart layout&quot; PCB board

What are the common problems with EMC?

High-speed PCB EMC design (2)

High-speed PCB EMC design (1)

PCB layout technology

PCB advanced design electromagnetic interference and suppression

How to avoid transmission line effects in high speed PCB design?

Source synchronization timing relationship and simulation examples

Timing analysis of data retention time

Timing analysis of data setup time

Analyze timing analysis and simulation strategy in high speed PCB design

Categories

Recommended Article:

"Smart layout" PCB board