Title :
T-cell SC integrator synthesises very large capacitance ratios
Author :
Van Peteghem, P. ; Sansen, Willy
Author_Institution :
Katholieke Universiteit Leuven, Elektrotechniek, Heverlee, Belgium
Abstract :
Very large pole/sampling-frequency ratios in SC filters require large capacitance ratios and thus result in inefficient area consumption. The use of a T-cell capacitance network allows one to integrate a very large time constant (VLT) integrator, which is, to the first order, insensitive to op-amp offset.
Keywords :
active filters; integrating circuits; network synthesis; switched capacitor networks; switched filters; SC filters; T-cell SC integrator; pole/sampling-frequency ratios; switched capacitor filter; very large capacitance ratios; very large time constant;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19830367
