高阶过取样多比特ΔΣ调制系统的分析与设计

Analysis and Design of the High-Order Over-Sampling Multi-Bit ΔΣ Modulation System

本文提出了一种新的分析和设计高阶过取样多比特ΔΣ调制系统的方法，用来推导高阶过取样多比特ΔΣ调制系统的结构和优化系统的反馈系数。分析结果表明这种方法可以有效地提高系统的分辨率、输入动态范围等性能，获得高分辨率的Ａ／Ｄ变换器。

A new method of analysis and design of the high-order over-sampling multi-bit ΔΣ modula-tion system is given,which can be used to deduce the toplogies of the high-order system and optimizethe feedback parameters of the high-order system.The analytical result indicates that the new methodcan increase the system performances such as the accuracy,the dynamic range of the input,etc. andimplement the high accurate analog/digital conveter.