漳州师范学院学报（自然科学版）
漳州師範學院學報（自然科學版）
장주사범학원학보（자연과학판）
JOURNAL OF ZHANGZHOU TEACHERS COLLEGE(NATURAL SCIENCE EDITION)
2013年
4期
35-39
,共5页
陀螺仪%全差分驱动器%高速ADC%抗混叠滤波
陀螺儀%全差分驅動器%高速ADC%抗混疊濾波
타라의%전차분구동기%고속ADC%항혼첩려파
gyroscope%fully-differential driving amplifier%high-speed ADC%anti-aliasing filter
针对由多通道运算放大器配置适当电阻网络的方法实现传统的单端/差分转换电路，这种电路存在输出信号不是全差分信号且不具有严格的反相性和同时性、会降低差分式 AD 采样精度等缺点。设计一个来自ADXRS622陀螺仪传感器的单端信号，经抗混叠滤波和 THS4531全差分驱动器调理后，由差分式 AD 转换器ADS8317和DSP完成的数据采集。实验结果表明所设计的调理电路方案可行，确保系统的精度，提高ADC性能。
針對由多通道運算放大器配置適噹電阻網絡的方法實現傳統的單耑/差分轉換電路，這種電路存在輸齣信號不是全差分信號且不具有嚴格的反相性和同時性、會降低差分式 AD 採樣精度等缺點。設計一箇來自ADXRS622陀螺儀傳感器的單耑信號，經抗混疊濾波和 THS4531全差分驅動器調理後，由差分式 AD 轉換器ADS8317和DSP完成的數據採集。實驗結果錶明所設計的調理電路方案可行，確保繫統的精度，提高ADC性能。
침대유다통도운산방대기배치괄당전조망락적방법실현전통적단단/차분전환전로，저충전로존재수출신호불시전차분신호차불구유엄격적반상성화동시성、회강저차분식 AD 채양정도등결점。설계일개래자ADXRS622타라의전감기적단단신호，경항혼첩려파화 THS4531전차분구동기조리후，유차분식 AD 전환기ADS8317화DSP완성적수거채집。실험결과표명소설계적조리전로방안가행，학보계통적정도，제고ADC성능。
Traditional single-ended/differential conversion circuit is realized by the multi-channel operational amplifier configured with proper resistance network. But this circuit has the follow drawbacks. First, its output-signal is not full differential signal. Second, it doesn’t have strict reverse phase and simultaneity. Third, it reduces the sampling accuracy of differential AD, and so on. So we design a data acquisition system. It first comes from single-ended signal of ADXRS622 gyroscope. Then it goes by anti-aliasing filter and fully-differential driving amplifier THS4531 conditioning. Finally it is performed by fully-differential AD and DSP. The experimental results show that this conditioning circuit scheme is feasible. It insures the precision of the system and improves performance of AD.
