Title :
Clock jitter noise spectra in continuous-time delta-sigma modulators
Author_Institution :
Wireless Design Dept., Motorola Semicond., Toulouse, France
Abstract :
This paper describes a theoretical method to obtain the exact structure of the noise spectra due to clock jitters in a low-pass continuous-time ΔΣ-modulator. It is shown that the clock jitters changing the width of the feedback pulse have a more important degrading effect than those causing a random delay in the feedback pulse. Calculation details and simulation results for the first-order and second-order modulators are presented
Keywords :
circuit feedback; clocks; continuous time systems; delta-sigma modulation; timing jitter; clock jitter noise spectra; continuous-time delta-sigma modulators; degrading effect; feedback pulse; first-order modulators; second-order modulators; Clocks; Delay effects; Delta modulation; Feedback; Jitter; Pulse modulation; Sampling methods; Semiconductor device noise; Space vector pulse width modulation; Thermal degradation;
Conference_Titel :
Circuits and Systems, 1999. ISCAS '99. Proceedings of the 1999 IEEE International Symposium on
Conference_Location :
Orlando, FL
Print_ISBN :
0-7803-5471-0
DOI :
10.1109/ISCAS.1999.780655
