摘要
介绍了基于24位模/数器件AD7710的直流电压表头的硬件设计和软件实现。阐述了AD7710的模拟电压输入、基准电压输入以及与微处理器的数字接口电路。分析介绍了采样滤波、快速平均、自动量程转换与校准技术。对印制电路板和软件设计等要注意的问题进行了讨论。
In the paper, the hardware and software of the DC voltage meter based on AD7710, is proposed. The circuit of analog input.reference input and the serial digital interface with microcomputer of AD7710,is presented. The technology of digital filtering.calibrating.fast averaging and automatic range switching, is detailed. And some problems in designing PCB for the high resolution are discussed.
出处
《中国仪器仪表》
2003年第12期6-9,共4页
China Instrumentation
