UG-851 Datasheet, PDF (12/15 Pages) Analog Devices – EVAL-AD7606SDZ/EVAL-AD7607SDZ/EVAL-AD7608SDZ User Guide

UG-851
EVAL-AD7606SDZ/EVAL-AD7607SDZ/EVAL-AD7608SDZ User Guide
AC TESTING—FFT CAPTURE
Figure 16 shows the FFT capture tab. The FFT tests the traditional
ac characteristics of the converter and displays a fast Fourier
transform (FFT) of the results. As in the histogram test, raw data
is captured and passed to the PC, where the FFT is performed,
displaying the signal-to-noise ratio (SNR), signal-to-noise-and-
distortion (SINAD), and total harmonic distortion (THD).
The FFT is typically used for examining the performance of the
ADC in the frequency domain. The Spectrum Analysis section
contains information about the samples taken, such as ac
specifications (see Figure 16).
You can choose whether to display the information for one,
several, or all eight channels in the window using the ADC 1
to ADC 8 push buttons.
Figure 16. FFT Tab
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