P
Pavlanto
Guest
Hi, I have designed an ADC in cadence virtuoso and i want to calculate the metrics such as SNR,SINAD,ENOB etc. For example i want to calculate ENOB. I read everywhere that i need to do an FFT my input, or simply use the spectrumMeas function. So i am using a sinuid input of 875MHz as fin and 2GHz as flck. In the field in spectrumMeas i use the values:
Signal: Vin
Start time:0
End Time: 16n
Number of Samples:32
Number of Noise bins:6
and the other values are default.
I get a really big value. Doesnt ENOB(or the other metrics) have to do with the ADC and its resolution??(I didn use anywhere the fact that i designed an 4bit ADC). Do these values have to do only with the signal input?
Signal: Vin
Start time:0
End Time: 16n
Number of Samples:32
Number of Noise bins:6
and the other values are default.
I get a really big value. Doesnt ENOB(or the other metrics) have to do with the ADC and its resolution??(I didn use anywhere the fact that i designed an 4bit ADC). Do these values have to do only with the signal input?