摘要
由于具有转换精度高和其他一系列优点,∑-Δ过采样A/D转换技术近年来颇受重视,而模拟和混合信号系统的硬件描述语言VHDL-AMS为其提供了一种良好的设计方法。本文根据∑-ΔA/D转换器的原理,建立了一个包括二阶∑-Δ调制器和抽取滤波器的转换器VHDL-AMS模型,同时结合Szermer提出的模型,对两种结构进行了仿真、比较和分析。
Due to higher conversion accuracy and a series of other advantages, ∑-△ over sampling A/D conversion technology has been paid great attention in recent years. The hardware description language VHDL-AMS for analog and mixed-signal system can provide an excellent design methodology for it. Based on the theory of ∑-△ A/D converter, this paper presents its VHDL-AMS model including a 2nd order ∑-△ modulator and a decimation filter. The simulations of this model and another one provided by Szermer have been carried out and the simulation results have also been compared and analyzed.
出处
《制造业自动化》
北大核心
2006年第9期92-94,共3页
Manufacturing Automation
基金
广东省自然科学基金(04020073)资助项目
