Power Spectral Density Estimation of the Clock Jitter in a Continuous Time Delta Sigma Modulator with Non Return to-zero DAC Waveform

In this paper by using an exactly analytic approach the clock jitter in the feedback path of a continuous time Delta Sigma modulator (CT DSM) with NRZ DAC waveform is modeled as an additive jitter noise, providing a time invariant model for a jittery CT DSM. Then the power spectral density (psd) of the clock jitter at the output of DAC is derived and by employing a proper approximation the power of the clock jitter at the output of the modulator is extracted analytically.

کلیدواژه ها:

Continuous time ، Delta-Sigma modulator ، clock jitter ، DAC waveform