摘要
首先分析了构建ADC模型的2个关键环节:如何用数字量函数替代实际的模拟量输入,以及如何构建仿真模型内核。利用线性插值算法实现了环节一,并以逐次逼近型ADC为例,构建了模型的仿真内核。为了更加清晰地表述这种ADC模型的作用,以"有采样保持器"和"无采样保持器"为例,通过实际的ADC模型算例分析了无采样保持器对ADC转换结果的影响,客观表现出这种模型的开放性和广泛适用性。
This paper analyzes two important issues in constructing simulation model of AD converter： one is to find a way of using digital input signal instead of analog signal on PC simulation platform, and the other is how to construct the model kernel. The first issue is implemented by linear interpolation arithmetic,and then the model kernel is setup by the example of SAR AD converter. In order to show more about the operation of this model,the simulations of AD converter with sampling- holder and without sampling - holder are imported as the example, By simulating these two models, the effect of no sampling - holder on AD converter is presented,which shows the opening and abroad adaptive of the model,
出处
《现代电子技术》
2007年第14期43-45,共3页
Modern Electronics Technique
