Evaluation of Code Selective Histogram Algorithm For ADC Linearity Test

This paper evaluates our previously proposed code selective histogram method with multi-tone input signal for the short-time accurate linearity testing of the ADC in consumer electronic products. Our code selective histogram method with two-tone sine wave for the SAR ADC test is taken up as an example and evaluated precisely, to test the linearity for specific vulnerable codes. Using only one harmonic component is a good point of two-tone sine wave input method. We have derived an explicit algorithm to obtain DNL and INL from the histogram data with multi-tone input. Then we have developed a program to validate our algorithm, and our simulation results show that the effectiveness and performance of the code selective histogram method.