利用AT89C2051实现低成本高精度A/D转换

Achieving low-cost and high-accuracy A/D conversion in AT89C2051

AT89C2051为例,介绍利用内部带模拟比较器的单片机,以简单的RC电路为外围电路实现低成本、高精度的A/D转换的方法,并对其进行理论分析.

This paper takes example for AT89C2051, and introduces how to utilize the microcontroller with precision analog comparator and add simple RC circuit to achieve high-accuracy A/D conversion. Moreover, its principle is introduced in detail.