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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 /交替式数据采集系统的DNL与INL小于每一通道单片ADC的DNL和INL
In this paper, DNL (Differential Nonlinearity) and INL (Integral Nonlinearity) and related testing theories and methods of high speed ADC and its parallel / alternate data acquisition system are studied.According to the statistical method, the DNL and INL The mathematical expressions of DNL and INL in parallel / alternate data acquisition system are derived, and the statistical histogram method is used to simulate the single chip ADC and the parallel / alternate data acquisition system composed of double chip ADC respectively. , DNL and INL for parallel / alternate data acquisition systems are less than the DNL and INL of a single ADC per channel