基于高精度模拟数字转换器的输出异码判别方法  

作　　者：孙凤梅 丁柯 付天豪 

机构地区：[1]中科芯集成电路有限公司,江苏无锡214072

出　　处：《科技创新与应用》2023年第24期86-90,共5页Technology Innovation and Application

基　　金：江苏省科技成果转化高性能实时微处理器系列产品研发及产业化(BA2019012)。

摘　　要：随着模拟数字转换器(ADC)静态参数测试技术越来越成熟,硅成本呈下降趋势,ADC测试成本逐步上升,导致ADC的静态参数测试也将更具挑战性。在ADC静态参数测试中输入刺激是影响测量结果精度的决定因素。因此针对如何更好地获取有效输入刺激,该文提出一种基于高精度ADC对比检验法。通过获取高精度ADC和待测ADC的输入刺激的输出差值,根据差值服分布确定异常数字码范围,判别无效输出码并去除相应输入刺激计算出待测ADC静态参数。最后应用到实际电路器件中,验证判别方法的有效性。With the development of ADC static parameter testing technology,the cost of silicon is decreasing,and the cost of ADC testing is increasing,which will make ADC static parameter testing more challenging.In ADC static parameter test,the input stimulus is the determining factor that affects the measurement accuracy.Therefore,aiming at how to obtain effective input stimulus better,this paper proposes a comparison test method based on high precision ADC.By obtaining the output difference between the input stimulus of the high-precision ADC and the input stimulus of the ADC to be tested,the range of abnormal digital code is determined according to the distribution of the difference,the invalid output code is identified and the corresponding input stimulus is removed to calculate the static parameters of the ADC to be tested.Finally,it is applied to actual circuit devices to verify the validity of the discriminant method.

关 键 词：模拟数字转换器 微分非线性 积分非线性 码密度直方图 正弦概率密度积分 

分 类 号：TN407[电子电信—微电子学与固体电子学]