Title :
Multibit CT SD modulators with pulse width modulation and FIR-DAC in the feedback path
Author :
Coldro, F. ; Torralba, A.
Author_Institution :
Dept. de Ing. Electron., Univ. de Sevilla, Sevilla
fDate :
Aug. 31 2008-Sept. 3 2008
Abstract :
A new class of multibit Continuous-Time Sigma-Delta Modulators (CT-SDMpsilas) is presented in this paper. The multibit stream in the quantizer output is converted to a single-bit Pulse Width (PW) modulated signal and fed back to the modulator input through a Finite Impulse Response (FIR) Digital-to-Analog Converter (DAC). The resulting architecture does not require Dynamic Element Matching (DEM) and it is very robust against clock jitter.
Keywords :
digital-analogue conversion; pulse width modulation; sigma-delta modulation; FIR-DAC; continuous-time sigma-delta modulator; feedback path; finite impulse response digital-to-analog converter; multibit CT SD modulator; pulse width modulation; quantizer; Clocks; Delta-sigma modulation; Digital modulation; Digital-analog conversion; Feedback; Finite impulse response filter; Pulse width modulation; Pulse width modulation converters; Robustness; Space vector pulse width modulation;
Conference_Titel :
Electronics, Circuits and Systems, 2008. ICECS 2008. 15th IEEE International Conference on
Conference_Location :
St. Julien´s
Print_ISBN :
978-1-4244-2181-7
Electronic_ISBN :
978-1-4244-2182-4
DOI :
10.1109/ICECS.2008.4674882
