Patent ID: 7295937
Filing Date: 2007-11-13
Classification: G01R

Abstract:
1. A method for determining noise components of an analog-to-digital converter (ADC), the method comprising: providing an input signal to a signal input and a clock input of the ADC; outputting a plurality of samples at a sampled phase on the input signal for a plurality of sampled phases; determining a jitter noise factor value, a reference noise factor value, and a total noise spectrum based on the plurality of samples for each of the plurality of sampled phases; and performing a least means square algorithm on the plurality of jitter noise factor values, reference noise factor values, and total noise spectra to estimate at least one of a jitter noise component and a reference noise component; wherein the performing a least means square algorithm on the plurality of jitter noise factor values, reference noise factor values, and total noise spectra determines a jitter noise power spectrum density, a reference noise power spectrum density and a constant substantially equal to a power spectrum density of a sum of a channel flicker noise and a thermal noise.