Analog Electronics — question 8 of 10
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ENOB = (SINAD - 1.76) / 6.02. Effective (noise-limited) resolution ≈ Full-scale / 2^ENOB.
Your application needs to resolve a 200µV step riding on a 2V full-scale ADC input range. The 16-bit ADC you're considering has a datasheet SINAD of 89dB at your sampling rate. Calculate the ADC's effective number of bits (ENOB), then use that to decide whether this converter can actually resolve your 200µV step, or whether you need a part with a higher SINAD.
This one resolves to a number. Give the value in the field below and your reasoning in the box — the number is checked exactly, by arithmetic.