主要介绍高速数据采集系统工作原理以及设计中存在的信号完整性问题,使用EDA工具Cadence设计数据采集的印制板。通过Cadence软件建立关键信号拓扑结构,进行串扰、布线等与信号质量相关的参数仿真,从仿真波形中可以测量出与信号时序相关的参数,根据仿真结果对PCB板布线进行优化,总结出部分设计规则。
The working principle of high-speed data acquisition system and the design signal integrity problems exist, the use of EDA tools-Cadence de- sign the PCB of data acquisition are introduced. And establish the key signal by topology, the crosstalk,wiring, and signal quality parameters related to simulation by Cadence,and get the correlation of the signal timing parameters from the simulation waveform, base on the simulation results we can opti- mize the layout of the PCB board,and acquire part of the design rules.