Title :
Sine-wave generation using a high-order lowpass switched-capacitor filter
Author :
Sandler, H.M. ; Sedra, A.S.
Author_Institution :
University of Toronto, Department of Electrical Engineering, Toronto, Canada
Abstract :
A switched-capacitor filter may be used to generate a sine wave by filtering a square wave derived from the filter´s clock. Using a high-order, rather than a second-order, filter eliminates the need for a precision high-Q filter response. With a seventh-order elliptic filter, this method achieved 0.07% total harmonic distortion.
Keywords :
low-pass filters; switched capacitor filters; THD 0.07%; high-order lowpass; seventh-order elliptic filter; sinewave generation; square wave filtering; switched-capacitor filter; total harmonic distortion;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19860435
