Spectral Analysis Tool; Figure 8-4. Spectral Analysis Tool - Texas Instruments ADS1285EVM-PDK User Manual

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8.4 Spectral Analysis Tool

The spectral analysis tool, shown in
SFDR, SINAD, and ENOB) of the ADS1285 ADC through single-tone sinusoidal signal FFT analysis using the
7-term Blackman-Harris window setting.
The FFT tool includes windowing options that are required to mitigate the effects of non-coherent sampling (this
discussion is beyond the scope of this document). The 7-Term Blackman-Harris window is the default option
and has sufficient dynamic range to resolve the frequency components of up to a 24-bit ADC. The None option
corresponds to not using a window (or using a rectangular window) and is not recommended.
SBAU394A – APRIL 2022 – REVISED SEPTEMBER 2022
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Figure 8-4, is intended to evaluate the dynamic performance (SNR, THD,

Figure 8-4. Spectral Analysis Tool

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ADS1285EVM-PDK Software Reference
ADS1285EVM-PDK Evaluation Module 19