摘要
设计了一种高精度程控直流电表。首先介绍了模数转换芯片ADS7841的基本组成和串行通信接口,接着给出了编程时序图和控制命令字,最后详细分析了硬件原理图和软件框图。
A highly accurate and programmable direct current meter is designed in this paper. First,it introduces the basic constitution and serial interface of the analog-to-digital chip ADS7841. Then,the programming timing diagram and control words are given. Finally,this paper deals with the hardware circuit design and software block diagram in detail.
出处
《仪表技术》
2014年第6期37-39,共3页
Instrumentation Technology
关键词
单片机
直流电表
模数转换
single chip microcomputer
direct current meter
analog-to-digital conversion
