过采样高阶A/D转换器的硬件实现

:利用过采样原理可实现高精度的 A/D转换。对此文中提出了一种新的并行高阶过采样 A/D转换器方案 ,用该方案实现的 A /D转换器具有物理概念清晰、结构稳定、易于实现等特点。文中还研究了该方法的实现过程 ,给出了三阶调制器积分器输出波形及总输出信号频谱图。它可用于声信号的数据采集中

Hardware Implementation of Oversampling High-order A/D Converters

High precise A/D converters can be implemented by using oversampling method. This paper presents a new cheme on a parallel oversampling high order A/D converter. The A/D converter realized by the scheme has the following features: physical concept clarity, styucture stabilization, easy implementation, etc. This paper also studies the implementation process of the scheme and gives the output waveforms of a 3 order modulator integrator and the spectrum figure of total output signals. The scheme can be used for data acquisition of acoustic signals.