Title :
Digitally-programmable switched-current filters
Author :
Begisi, Ayse G. ; Fiez, Terri S. ; Allstot, David J.
Author_Institution :
Dept. of Electr. & Comput. Eng., Oregon State Univ., Corvallis, OR, USA
Abstract :
A second-order lowpass digital filter with independently programmable input gain, selectivity, and center frequency is presented as an example of the switched-current technique. The programmable second-order section has 63 possible gain values, 63 possible selectivity values, and eight possible logarithmically-spaced center frequencies per octave. Design considerations and frequency response simulations are discussed
Keywords :
digital filters; frequency response; low-pass filters; switched filters; center frequency; frequency response simulations; independently programmable; input gain; lowpass digital filter; second-order; selectivity; switched-current filters; Digital filters; Doping; Finite impulse response filter; Frequency; IIR filters; RLC circuits; Switched capacitor circuits; Transfer functions; Transversal filters; Voltage;
Conference_Titel :
Circuits and Systems, 1990., IEEE International Symposium on
Conference_Location :
New Orleans, LA
DOI :
10.1109/ISCAS.1990.112687
