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6.6 Frequency Domain Display
The spectral analysis tool, shown in
SFDR, SINAD, and ENOB) of the ADS8555 ADC through single-tone sinusoidal signal fast Fourier transform
(FFT) analysis using the 7-term Blackman-Harris window setting. The FFT tool includes windowing options
that are required to mitigate the effects of noncoherent 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.
SLAU298A – NOVEMBER 2009 – REVISED MAY 2021
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Figure
6-7, is intended to evaluate the dynamic performance (SNR, THD,
Figure 6-7. Frequency Domain Display
Copyright © 2021 Texas Instruments Incorporated
ADS8555EVM Operation
ADS8555EVM-PDK Evaluation Module
17
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