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Altera_Forum
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15 years ago

SNR of a Quantized Signal using FFT

Hi all, I have a problem in the calculation of SNR. Sine wave is quantized and then I have calculated its SNR using FFT. The coherence condition with windowing as well is implemented t...
Altera_Forum's avatar
Altera_Forum
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15 years ago

6.02*NoOfBits + 1.76 is the theoretical limit. many factors in the design and operating environment can reduce the SNR from this limit.. including improper heat dissipation, the signal source, reference voltage, poor layout, etc... check the spec sheets of the A/D and make sure you're doing your measurement/calculation properly:

see http://www.cse.psu.edu/~chip/course/analog/lecture/sfdr1.pdf