DanielLam
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SDR doesn't exist, I think you mean SNR.
ENOB usually comes from SNDR. If there is no distortion, then SNR = SNDR because the distortion terms are negligible.
For a sine wave, enob = (sndr - 1.76)/6.02
If a different waveform is used (eg triangle waveform), the equation is sightly different.
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