高速ADC及由其构成的并行/交替式数据采集系统的非线性研究  

Nonlinearity of High-Speed ADC and a Data Acquisition System with Interleaving/Multiplexing

作　　者：林茂六[1] 吴芝路[1] 王金龙[1] 任广辉[1] 

机构地区：[1]哈尔滨工业大学电子与通信工程系,哈尔滨150001

出　　处：《电子学报》2000年第2期72-74,78,共4页Acta Electronica Sinica

基　　金：国家自然科学基金!(No .69872 0 2 1 );深圳市华为公司科技基金

摘　　要：本文研究了高速ADC及由其构成的并行 /交替式数据采集系统的DNL(微分非线性 )与INL(积分非线性 )及有关测试理论与方法 .根据统计学方法由单片ADC的DNL和INL导出了并行 /交替式数据采集系统的DNL和INL的数学表达式 ;并且采用统计直方图方法分别对单片ADC和由双片ADC组成的并行 /交替式数据采集系统进行了计算机仿真 .结果表明 ,并行The differential nonlinearties (DNL) and integral nonlinearities (INL) of high speed ADC and a data acquisition system with interleaving/multiplexing and their measurement methods are discussed.According to statistic method,the mathematical expression of DNL and INL of data acquisition system with interleaving/multiplexing is demonstrated by the DNL and INL of monolithic ADC.Furthermore,the simulations of monolithic ADC and data acquisition system with two ADCs are finished with histogram methods.It is shown that the DNL and INL errors of data acquisition system with two ADCs are smaller than linearity errors of each ADC channel.

关 键 词：数据采集系统 非线性 模/数转换器 

分 类 号：TP274.2[自动化与计算机技术—检测技术与自动化装置] TP335.1[自动化与计算机技术—控制科学与工程]