基于ADS1212的高精度数据采集系统及抗混滤波器的设计  

Design of Anti-mix Filter and High-accuracy Data Acquisition System Based on ADS1212

作　　者：钱聪[1] 盛小平[1] 

机构地区：[1]西安通信学院,陕西西安710106

出　　处：《现代电子技术》2006年第23期84-86,共3页Modern Electronics Technique

摘　　要：介绍了BB公司的ADS1212芯片的功能和性能,解决了他在进行高精度Σ-Δ型A/D转换时的稳压输入问题,详细说明了ADS1212在构成高精度数据采集时的设计方法。然后用Filterlab软件设计了一个五阶低通滤波器,与ADS1212芯片的三阶数字滤波器形成互补,共同滤除进入转换系统的噪声,进而提高数据采集系统的精度。The features and functions of ADC ADS1212 are introduced firstly, the problem of stable inputting voltage in the high- accuracy ∑-△ A/D conversion is solved,and the design technique of high - accuracy acquisition is expounded. Then in order to improve the system＇s accuracy,a five step low- through filter which works with the digital filter to resist the noise,is designed through Filterlab software.

关 键 词：∑-△型A/D转换 数据采集 ADS1212 抗混滤波器 

分 类 号：TN713[电子电信—电路与系统]