Title :
Double-sampled time-interleaved delta-sigma modulators
Author :
Makarem, M. Abul ; Dessouky, M. ; Tawfik, M. ; Ragaie, H.F.
Author_Institution :
Mentor Graphics Corp., Cairo, Egypt
Abstract :
In this paper, time interleaving is combined with double sampling to extend the effective sampling frequency in switched-capacitor delta sigma modulators. A Second-order four-branches delta sigma modulator is first presented. The switched-capacitor circuit is then constructed using double sampling. Results show that the effective OSR is enhanced by a factor of 8 at the expense of larger area.
Keywords :
delta-sigma modulation; switched capacitor networks; OSR; delta-sigma modulators; double sampling; switched capacitor; time interleaving; Analog circuits; Clocks; Delta modulation; Delta-sigma modulation; Frequency; Graphics; Interleaved codes; Sampling methods; Signal sampling; Switched capacitor circuits;
Conference_Titel :
Design and Test Workshop (IDT), 2009 4th International
Conference_Location :
Riyadh
Print_ISBN :
978-1-4244-5748-9
DOI :
10.1109/IDT.2009.5404110
