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采用基于最小偏差逼近多项式和递推法求解待定系数方程的方法 ,开发了一套内插式过采样 ∑ Δ调制器设计自动化软件 ,动态调整调制器的结构参数 ,使 ∑ Δ调制器的性能得到优化 .给出了一个具体的内插式 ∑ Δ调制器的设计实例 ;为了解设计的性能 ,给出了该 ∑Δ调制器的谱特性 .实验结果证明 ,使用该自动化软件 ,可以进行采用过采样技术的数 -模转换器中内插式 ∑ Δ调制器的参数设计 .
A method based on minimum deviation approximation polynomial and recursive method for solving the equation of undetermined coefficients was developed and an interpolating oversampling ΣΔ modulator was designed to design automation software to dynamically adjust the structural parameters of the modulator to obtain the performance of the ΣΔ modulator The design example of a specific interpolating ΣΔ modulator is given. The spectral characteristics of the ΣΔ modulator are given to understand the performance of the design. The experimental results show that using the automation software, Parameter Design of Interpolating ΣΔ Modulator in Digital - Analog Converters for Sampling Technology.