Design and Implementation of ADCBIST for Dynamic Parameter Measurement

This paper works on making a quick and precise testing method for a type of analog to digital convertor called Sigma-Delta ADC. This project talks about a way to test Sigma-Delta ADC using BIST(Built-in-self-test) technique. Proposed solution uses mostly digital module to generate low frequency signal using CORDIC-coordinate Rotation Digital Computer algorithm. This method does not need DAC code measuring device since it uses a special algorithm called uSMILE rome to fix the offset and nonlinearity of DAC. Which is controlled by calibrating coefficients. This solution used to measure a changing factor such as test and functionality of SD ADC by using sine wave as input and looking at the SNR, SINAD, and THD from the frequency spectrum. We used a FIR filter to cancel out noise and experimental results are presented.