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线性度是数模变换器(以下简称D/A)的一个很重要的参数。评价一个D/A的线性误差,需要进行大量的测试。用人工逐点测量,一是慢,二是要作大量重复性的误差计算,特别是随着D/A位数的增加,工作量和复杂程度更将成倍增长。测试速度慢、过程长还会使测试结果除线性误差外,引入由于电源漂移和环境温度变化而引起的误差,影响对一个D/A的线性误差作出正确的评价。针对这些问题,
Linearity is a very important parameter of D / A converter (hereinafter referred to as D / A). Evaluating a linear error of D / A requires a lot of testing. With artificial point by point measurement, one is slow, the other is to make a large number of repetitive error calculations, especially with the D / A median increase, the workload and complexity will more than double. Test speed is slow, the process will make the test results in addition to the linear error, the introduction of power drift and ambient temperature changes caused by the error, the impact of a D / A linear error to make the right assessment. to deal with these problems,