Title :
Continuous Time Delta-Sigma Modulators with Arbitrary DAC Waveforms
Author :
Shamsi, Hossein ; Shoaei, Omid
Author_Institution :
Dept. of Electr. & Comput. Eng., Tehran Univ.
Abstract :
In this paper a straight-forward approach to extract the equivalent loop-gain of a continuous time delta-sigma modulator with an arbitrary DAC waveform in z-domain is presented. In this approach, the infinite number of rectangular pulse shapes approximates the arbitrary DAC waveform. Then simply using the transformations available in literature for a rectangular DAC pulse shape and applying superposition on each rectangular pulse shape, the loop-gain of the system is derived in z-domain
Keywords :
delta-sigma modulation; waveform analysis; DAC waveforms; continuous time delta-sigma modulators; equivalent loop-gain; rectangular pulse shapes; z-domain; CMOS technology; Clocks; Delta modulation; Frequency; Performance analysis; Pulse modulation; Pulse shaping methods; Sampling methods; Switches; Transfer functions; Delta-Sigma modulator; arbitrary DAC waveform; continuous time;
Conference_Titel :
Circuits and Systems, 2006. APCCAS 2006. IEEE Asia Pacific Conference on
Conference_Location :
Singapore
Print_ISBN :
1-4244-0387-1
DOI :
10.1109/APCCAS.2006.342363
