Due to the high speeds of many electronic designs in modern technologies, the physical characteristics of the design-implementation (PCBs, packages, interconnects, etc.) contribute to the behavior of the circuits just as much as the parts of the electrical design that are included in the schematic.
Increasingly fast edge rates in today’s ICs cause undesirable high-speed effects, even in PCB designs running at low operating frequencies. As driver ICs switch faster, there is a risk of signal degradation – such as ringing, glitching, crosstalk, and timing problems.
All of this, as well as emission and immunity, are some of the factors that must be considered during the design work, thus mitigating problems with eg signal integrity (SI) and electromagnetic compatibility (EMC).
The electrical characteristics are directly influenced by board-level and system-level features such as PCB material, size and stack-up, placement of components, decoupling and bypassing, routing topology, signal line terminations, motherboard-daughterboard configuration, connectors, grounding, etc.
Prevas has experience from many high-speed projects and assignments and has a deep knowledge in the design requirements and conditions. To make a good, reliable, high-speed PCB design, it is often necessary to use a qualified simulation tool like Hyperlynx. Prevas can assist our customers to guide and help throughout the design process and do the needed simulations.
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