摘要
为提高现代数字控制系统中多通道模/数转换的效率,介绍串行多通道模/数转换器AD7890工作原理。选用TMS320F2812作为处理器,给出AD7890与DSP串行外设接口的硬件实现方法、电平转换方法及软件实现流程。实际应用表明,系统的A/D转换效率较高,性能稳定。为实现多轴数字控制系统的A/D转换功能提供了一种新的方案。
To improve the efficiency of multi- channel A/D converting in modern digital control system, the working principle of serial multi -channel A/D convertor AD7890 is introduced. Taking TMS320F2812 as a processor, hardware realization of AD7890 and DSP is given,as well as level conversion method and software realization flow. The practical application shows the high efficiency and stable performance of system A/D conversion and a new scheme is provided to A/D converting function realization of multiaxes digital control system.
出处
《现代电子技术》
2009年第22期213-215,共3页
Modern Electronics Technique
关键词
多通道模/数转换器
DSP
串行外设接口
转换效率
multi-channel A/D convertor
DSP
serial peripheral interface
converting efficiency
