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SAR ADC ENOB measurement in cadence

时间:04-04 整理:3721RD 点击:
I wanna measure my SAR ADC's ENOB using Cadence 6.14
can i know the exact steps ?

static or dynamic?

its Dynamic ENOB

Follow the IEEE Standard 1241 about ADC measurement methodology. Apply sinusoidal wave to the input and sampling it with numbers of samples≥2^N and make FFT of collected samples to get SINAD. Next calculate ENOB from formula ENOB=(SINAD-1.76)/6.02
Of course the sampling frequency cannot be an integral multiplicity of input signal frequency to avoid a leakage on FFT, etc.

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