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6.5 Frequency Domain Display
The spectral analysis tool, shown in
SFDR, SINAD, and ENOB) of the ADS8568 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.
SBAU193E – JUNE 2011 – REVISED MAY 2021
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Figure
6-5, is intended to evaluate the dynamic performance (SNR, THD,
Figure 6-5. Frequency Domain Display
Copyright © 2021 Texas Instruments Incorporated
ADS8568EVM Operation
ADS8568EVM-PDK Evaluation Module
17
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