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Howto quantize and calculate the signal to noise ratio for analog and digital signals

Terminology[]


RMS Noise = (Noise level in X/root Hz)*sqrt (bandwidth)

Dynamic Range = SNR = RMS Full-scale/RMS Noise

Dynamic Range (dB) = SNR (dB) = 20*Log10 (RMS Full-scale/RMS Noise)

ENOB = log (FSR/RMS noise)/log (2)

The relationship between ENOB and SNR is

ENOB = (SNR(in dB) - 1.76) / 6.02


sources[]

http://www.analog.com/en/content/0,2886,760%255F788%255F91250,00.html



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