Method of dynamic parameters measurement of high-speed D/A converters

Abstract

Developed sampling device and algorithm of digital signal processing for automated measurement of settling times of fast D/A converters is represented. The new sampling device with numerically controlled oscillators allows realizing of the different types of the time scale transformation. Using of ΣΔ A/D converter and FIFO memory allows significant simplification of the device. The equations of time scale transformation ratio and sampling step are presented. A method of using of an ideal comb filter in frequency domain to filter measurement signal has been developed. It is shown that such filtering allows significant reduction of noises of measurement signal. Results of the research of developed digital signal processing algorithm are submitted.