Title :
Low Distortion ΔΣ Modulator Employing modified charge-pump based switched-capacitor integrator
Author :
Shen, Weilun ; Wang, Tao ; Temes, Gabor C.
Author_Institution :
Sch. of Electr. Eng. & Comput. Sci., Oregon State Univ., Corvallis, OR, USA
Abstract :
Modified charge-pump based switched-capacitor integrator is a promising technique to reduce opamp power consumption. In this paper, design methodologies are introduced to incorporate such kind of integrator into a low-distortion delta-sigma modulator. A second-order delta-sigma modulator was designed and simulated to verify the proposed modulator topology.
Keywords :
charge pump circuits; delta-sigma modulation; network topology; operational amplifiers; power consumption; switched capacitor networks; charge-pump based switched-capacitor integrator; low distortion ΔΣ modulator; low-distortion delta-sigma modulator; modulator topology; opamp power consumption; second-order delta-sigma modulator; Charge pumps; Circuits; Delta modulation; Design methodology; Energy consumption; Feedback; Feedforward systems; Filters; Linearity; Topology;
Conference_Titel :
Circuits and Systems (MWSCAS), 2010 53rd IEEE International Midwest Symposium on
Conference_Location :
Seattle, WA
Print_ISBN :
978-1-4244-7771-5
DOI :
10.1109/MWSCAS.2010.5548655
