Texas Instruments ADS131E08EVM-PDK, User Manual, Page: 26 / 39

ADS131E08 Analysis Tools
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26 SBAU200C – June 2012 – Revised April 2020
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Performance Demonstration Kit for the ADS131E08
5.3.2 AC Analysis Parameters
The AC Analysis Parameters portion of the FFT tool (red box 2 in Figure 27 ) is used to dictate the number
of harmonics, dc leakage bins, harmonic leakage bins, and fundamental leakage bins that are used in the
creation of various histograms. Press the
Windowing button, shown in in Figure 28 , to evaluate the FFT
graph under a variety of different windowing options. Pressing the Reference button toggles between
dBFS (decibels, full-scale) and dBc (decibels to carrier).
Figure 28. Analysis
→
FFT
→
AC Analysis Parameters: Windowing Options
5.3.3 FFT Analysis
The FFT Analysis button (red box 3, Figure 27 ) pulls up the window shown in Figure 29 . This window
displays the ac details of the data set after it is viewed in the frequency domain. The SNR, THD, and
harmonic information is listed in a table format.
Figure 29. Analysis → FFT → FFT Analysis: Input Short Condition