Title :
An adaptive tuning circuit for integrated continuous-time filters
Author :
Kozma, K.A. ; Johns, D.A. ; Sera, A.S.
Author_Institution :
Dept. of Electr. Eng., Toronto Univ., Ont., Canada
Abstract :
A strategy for tuning continuous-time filters is presented. Instead of relying on matched integrated elements, this technique uses an adaptive algorithm to tune both the poles and zeros of the filter. Circuit details and experimental results are given. The tunable filter was fabricated with a 3-μm CMOS process. The tuning circuit was implemented with an on-chip gradient filter and off-chip discrete components. Simulation and experimental results show the validity of the proposed tuning approach
Keywords :
CMOS integrated circuits; active filters; adaptive filters; linear integrated circuits; poles and zeros; tuning; 3 micron; CMOS process; adaptive algorithm; adaptive tuning circuit; integrated continuous-time filters; monolithic IC; on-chip gradient filter; poles and zeros; tunable filter; Adaptive algorithm; Adaptive filters; Aging; Circuit optimization; Error correction; Least squares approximation; Matched filters; Poles and zeros; Transfer functions; Tunable circuits and devices;
Conference_Titel :
Circuits and Systems, 1990., IEEE International Symposium on
Conference_Location :
New Orleans, LA
DOI :
10.1109/ISCAS.1990.112328
