Title :
Ladder-simulation switched-capacitor filters with inductor loops
Author :
Gregorian, Roubik ; Fan, Shih-Chung
Author_Institution :
American Microsystems Inc., Santa Clara, USA
Abstract :
In ladder-simulation switched-capacitor filters, offset voltages of the op-amps can cause the output simulating inductor currents to build up if the LC prototype contains an inductor loop. This problem is eliminated by a novel technique where the sum of inductor currents flowing into each node is simulated by one op-amp output.
Keywords :
active filters; ladder networks; operational amplifiers; switched capacitor networks; switched filters; inductor loops; ladder-simulation; operational amplifier offset voltage; output simulating inductor currents; switched-capacitor filters;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19810551