摘要
本文介绍了一种AD采样电路的工作原理,该电路是基于通道选择开关DG406,射极跟随器OPA4277,AD转换芯片ADS8519和微控制器LPC2294等芯片。针对AD采样电路中存在的干扰进行分析,并提出解决方案,对类似AD采样电路设计有借鉴意义。
This paper introduces the working principle of an AD sampling circuit, the circuit is based on the channelselection switch DG406, emitter follower OPA4277, AD conversion chip ADS8519 and micro controller chi-p LPC2294, etc. The interference existed in the AD sampling circuit is analyzed, and the solutionis put forward, whichprovides reference for similar AD sampling circuit design.
出处
《河南科技》
2015年第20期26-28,共3页
Henan Science and Technology
关键词
AD采样
SPI
寄生电容
AD sampling
SPI
parasitic capacitance
