Title :
Analytic limitations on sigma-delta modulator performance
Author :
Harrison, J. ; Weste, N.
Author_Institution :
Dept. of Electron., Macquarie Univ., Marsfield, NSW, Australia
Abstract :
Analytic limitations on the noise transfer function of sigma-delta modulators are derived. The noise transfer function magnitude in decibels integrated against frequency sums to at least zero. An excess delay of one sample in the modulator feedback loop is found to be detrimental for lowpass modulators.
Keywords :
circuit feedback; delays; sigma-delta modulation; transfer functions; excess delay; lowpass modulators; modulator feedback loop; noise transfer function; sigma-delta modulator; transfer function magnitude; Delay; Delta-sigma modulation; Feedback loop; Frequency; Modulation coding; Noise figure; Noise shaping; Performance analysis; Quantization; Transfer functions;
Conference_Titel :
Circuits and Systems, 2000. Proceedings. ISCAS 2000 Geneva. The 2000 IEEE International Symposium on
Conference_Location :
Geneva, Switzerland
Print_ISBN :
0-7803-5482-6
DOI :
10.1109/ISCAS.2000.856168
