∑－△转换器的使用问答（１）ＯｌｉＪｏｓｅｆｆｓｓｏｎ问：我想使用∑－△ＡＤＣ，但是有一些问题。因为它与以前我所用过的转换器似乎有明显的差别。当着手设计抗混叠滤波器时，我首先要考虑的是什么问题？答：过采样转换器的主要优点是防止混叠所需要的滤波变得十分... Sigma-Delta Converter Q & A (1) OliJoseffsson Q: I want to use Σ-Δ ADC, but there are some problems. Because it seems to have used the converter before I have a clear difference. When I started designing an anti-alias filter, what problem should I first consider? A: The main advantage of oversampling converters is that filtering needed to prevent aliasing becomes very ...