High speed PCB design skills
The main signal line is best concentrated in the center of the PCB board.The clock generator circuit should be near the center of the PCB board, and the clock fan out should be Daisy chain or parallel wiring.
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PCB design always has a few impedance can not be continuous place, how to do?
The parasitic capacitance through the hole can cause the signal rise time to be prolonged and the transmission speed to be slowed down, thus deteriorating the signal quality.
PCB design on the "hole cover oil" and "hole open window" usage distinction
Many customers use pad(plug-in holes) to represent conductive holes, thus causing your conductive holes to open the window. Then please check your document design!
How does Mentor's PCB design software handle differential line teams?
In the real world, in addition to considering signal quality, power source plane coupling (using adjacent ground planes to reduce AC impedance of the power plane) and layered symmetry are all factors to be considered.
In high speed PCB design, designers should consider from what aspects EMC, EMI rules?
When selecting the driver chip, in addition to ensuring that it basically matches the load and that the signal edge meets the requirements (generally, the clock is an effective signal along the clock), the time delay of the clock in the driver chip should
High speed PCB design
The main reason of reflection signal: too long running; Transmission lines with unmatched terminations, excess capacitance or inductance, and impedance mismatches.
Methods of eliminating crosstalk in PCB design
The size of inductive crosstalk depends on the proximity of two loops, the size of the loop area, and the impedance of the load affected.
There are several ways to eliminate crosstalk in PCB design coupling
High speed devices are particularly sensitive to this, and will thus receive high speed false signals, while low speed devices will ignore such false signals.
Why are PCB design layers mostly even?
the following methods can be used to balance the cascade, reduce the cost of PCB production and avoid PCB bending.
PCB design: Analysis of quality problems in electroplating and etching of printed circuit boards
The lines form "copper roots" on both sides after etching, and the copper roots narrow the line spacing, resulting in printed circuit boards that do not meet the requirements of Party A, and may even be rejected.
PCB design and production company multi-layer pcb circuit board proofing production process
PCB board is printed with solder paste, installed with electronic components, and then fixed by reflow welding.
About the PCB design of the board and matters needing attention
Another technique is to lay a ground wire between the two lines. The ground wire is low impedance, and adding such another wire will weaken the electric field that causes the interference!
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