Title :
Double-sampled ΔΣ modulator with relaxed feedback timing
Author :
Shen, Wei ; Temes, Gabor C.
Author_Institution :
Dept. of Electr. Eng. & Comput. Sci., Oregon State Univ., Corvallis, OR, USA
Abstract :
A double-sampled delta-sigma (DeltaSigma) modulator topology is proposed that can relax the critical timing constraints in the modulator feedback path. The speed requirements of the quantiser and dynamic element matching logic are thus greatly reduced. To verify the effectiveness of the proposed topology, a second-order double-sampled DeltaSigma modulator is designed and simulated.
Keywords :
circuit feedback; delta-sigma modulation; modulators; delta-sigma modulator topology; double-sampled modulator; modulator feedback path; relaxed feedback timing;
Journal_Title :
Electronics Letters
DOI :
10.1049/el.2009.1267
