基于正弦波点击率的非线性误差测试方法

Nonlinear error testing method based on sine wave click rate technology

针对ADC在通讯和多媒体技术上的应用需求,研究了基于正弦波点击率的ADC非线性误差测试方法,实现了正弦波点击率技术在ADC非线性误差测试中的应用。向ADC输入正弦波信号,对输出数字码进行标准化处理,补偿正弦波形电压分布的不均匀性,通过点击率算法推算ADC的微分非线性误差,并在大规模数模混合测试设备Catalyst-200上验证了算法的可靠性和精确性。实验结果表明,该算法能够精确地估算ADC非线性误差,完整地表征了ADC线性度和丢码率,为ADC在通讯和多媒体技术上的应用提供了重要的参数依据,具有较强的工程实用性和市场前景性。

To fulfill the ADC applied on communication and imedia technology,this article researches the ADC＇s Nonlinear error testing method based on Sine Wave click rate technology,and realizes the application of Sine wave click technology in ADC＇s nonlinearity error testing.Put the sine wave into ADC＇s input,deal the output data with normalized conduct to compensate the uneven distribution of sine waveform voltage,and then,calculate the ADC＇s differential Nonlinearity Error by means of click rate algorithm,at the end,verify reliability and accuracy of the algorithm at the e-scale mixed-signal test equipment Catalyst-200.The experimental results show that this algorithm can estimate the ADC＇s nonlinearity error accurately,represent the ADC＇s linearity and dropout rate entirely,provide important parameter to the application of ADC on communication and imedia technology.it has a strong engineering practicality and a fine market outlook.