Title :
Integrated SC lowpass filter with a 1-100 Hz variable bandwidth
Author :
Gnudi, A. ; Finotti, C. ; Baccarani, G.
Author_Institution :
Dept. of Electron., Bologna Univ.
fDate :
4/24/1997 12:00:00 AM
Abstract :
A fully integrated SC second-order lowpass filter has been built with a 0.5 dB passband ripple, a programmable cutoff frequency in the range 1-100 Hz, and a dynamic range of 88.4 dB. A decimation filter (DEF) is used to alleviate the requirements imposed on the continuous-time anti-aliasing filter (AAF). The bandwidth variation is achieved by means of a configurable combination of capacitors and a suitable control logic circuit
Keywords :
analogue circuits; low-pass filters; monolithic integrated circuits; switched capacitor filters; 1 to 100 Hz; anti-aliasing filter; bandwidth variation; capacitors; configurable combination; continuous-time filter; control logic circuit; decimation filter; integrated SC lowpass filter; programmable cutoff frequency; second-order lowpass filter;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19970553
