Title :
Jitter analysis of bandpass continuous-time ΣΔMs for different feedback DAC shapes
Author :
Ashry, Ahmed ; Aboushady, Hassan
Author_Institution :
LIP6 Lab., Univ. Pierre & Marie Curie, Paris, France
fDate :
May 30 2010-June 2 2010
Abstract :
In this paper, a simple and intuitive technique for analyzing clock jitter effect on bandpass Continuous-Time Sigma-Delta (ΣΔ) modulators is introduced. The power spectral density of the jitter noise for different feedback DAC shapes are derived and compared. It is shown that DAC output signal shapes used to reduce clock jitter sensitivity in lowpass Continuous-Time ΣΔ modulators may not be suitable for bandpass modulators.
Keywords :
feedback; jitter; sigma-delta modulation; DAC output signal; bandpass continuous-time ΣΔM; bandpass continuous-time sigma-delta modulators; bandpass modulators; clock jitter sensitivity; feedback DAC shapes; jitter noise; power spectral density; sigma-delta modulators; Additive noise; Clocks; Jitter; Logic; Noise shaping; Optical signal processing; Output feedback; Sampling methods; Shape; Signal to noise ratio;
Conference_Titel :
Circuits and Systems (ISCAS), Proceedings of 2010 IEEE International Symposium on
Conference_Location :
Paris
Print_ISBN :
978-1-4244-5308-5
Electronic_ISBN :
978-1-4244-5309-2
DOI :
10.1109/ISCAS.2010.5537652
