Title :
Low-frequency noise reduction in SC ladder filters
Author :
Maloberti, Franco ; Montecchi, F.
Author_Institution :
UniversitÃ\xa0 di Pavia, Istituto di Elettronica e Comunicazioni Elettriche, Pavia, Italy
Abstract :
The low-frequency noise in SC ladder filters can be reduced by using a time-sharing technique. An example of a single-op-amp, second-order lowpass filter illustrates the design approach to obtaining a total noise suppression at frequencies near to zero.
Keywords :
active filters; ladder networks; low-pass filters; random noise; switched capacitor networks; switched filters; SC ladder filters; l/f noise; low-frequency noise; lowpass filter; noise suppression; switched capacitor filters; time-sharing technique;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19820459
