摘要
数据采集的精度及对数据采集的抗混叠滤波,在电路设计中是很重要的考虑因素。为了更好的实现数据采集中精度的要求,系统、全面地从ADC的驱动电路、抗混叠滤波器、后续采样/保持电路以及不同采样频率下的情况等讨论了抗混叠滤波器的设计,提出高精度数据采集中抗混叠滤波设计中应考虑的若干重要问题,指出了目前混叠滤波器设计中的不足之处,为高精度数据采集系统的设计提供了十分有益的参考。
The most important factors that must be considered in a data acquiring circuit are the precision and the anti-aliasing filtering.In order to meet to the demand of the precision in data acquisition, this paper discusses systematically the design of ADC driver circuit, anti-aliasing filter and samplingholding circuit at different sample rate, presents some important points of designing anti-aliasing filter, points out current ill-considered design,and provides some much useful references for the designing of high accurate data acquisition system.
出处
《国外电子元器件》
2007年第8期30-33,38,共5页
International Electronic Elements
基金
国家自然科学基金(60174032
60674111)
