Дизайн печатной платы Cadence
Cadence PCB Design - это крупное программное обеспечение EDA, которое может завершить почти все аспекты электронного дизайна, в том числе дизайн ASIC,FPGA Design, и дизайн платы печатных плат.
Cadence PCB Design Method
Настоящее время, more and more high-speed designs are adopting a more effective method that is conducive to accelerating the development cycle. Во-первых, establish a set of physical design rules that meet the design performance indicators,and use these rules to limit PCB layout and wiring. Before installing the device, conduct the simulation design first.
In this virtual testing, designers can compare design metrics to evaluate performance.These key prerequisite factors are to establish a set of physical design rules for performance indicators, and the foundation of the rules is based on model-based simulation analysis and accurate prediction of electrical characteristics, so simulation analysis at different stages is very important.
Cadence has released a very practical tool option for high-speed circuit design and signal integrity analysis in PCB Design Studio- Allegro PCB. This simulation software can be used to determine whether a circuit board line belongs to a microstrip line, strip line, broadband coupling strip line, и т. д.. based on the sorting of layers, the dielectric constant of the PCB, the thickness of the medium, the position of the signal layer, and line width, And according to different calculation formulas, the impedance of the signal line and the reflection, перекрестные помехи, electromagnetic interference, и т. д.. of the signal line can be automatically calculated, thereby constraining the wiring to ensure the signal integrity of the pcb substrate.
When wiring,use the Interconnect Designer tool to set various constraints, which include a wide range of physical and electrical performance parameters,such as common PCB line width, number of vias,impedance range,peak crosstalk,overshoot characteristics, signal delay,Сопоставление импеданса, и т. д.. Use simulation results to determine the timing, signal integrity,and electromagnetic compatibility Make optimal designs based on time characteristics and other related issues.
Cadence software has developed its design process for high-speed PCB design.Its main idea is to use a good simulation analysis design to prevent problems from occurring and try to solve all possible problems before PCB production.
Compared with traditional design processes, the main difference is the addition of control nodes in the process, which can effectively control the design process. It integrates schematic design, PCB layout and wiring, and high-speed simulation analysis, which can solve electrical performance-related problems in various stages of design. By analyzing various factors such as timing, signal-to-noise, перекрестные помехи, power structure, and electromagnetic compatibility,the optimal design can be made for signal integrity, целостность власти, electromagnetic interference, and other issues of the system before layout and wiring.
Дизайн печатной платы Cadence
Advantages of Cadence PCB design
1) A reliable,scalable,and cost-effective PCB editing and wiring solution that is constantly updated according to design requirements.
2) Provide a complete interconnected environment from basic/advanced layout and cabling to strategic planning and global cabling.
3) Accelerate advanced design using high-speed rules/constraints.
4) Contains a comprehensive set of functional combinations.
5) Contains a constraint management system from front-end to back-end for constraint creation,management,and confirmation.
6) Improve design efficiency through the integration of application software.
7) Can achieve tight integration from front-end to back-end.
Cadence PCB design software that is easy to operate and highly practical.It can complete the schematic design,schematic symbol production,PCB component packaging design,board frame setting, расположение компонентов,PCB board wiring,and output documents.