Title :
Dynamic range, noise and linearity optimization of continuous-time OTA-C filters
Author :
Koziel, S. ; Ramachandran, A. ; Szczepanski, S. ; Sanchez-Sinenco, E.
Author_Institution :
Fac. of Electron., Tech. Univ. Gdansk, Poland
Abstract :
A general framework for performance optimization of continuous-time OTA-C filters is presented. Efficient procedures for evaluating nonlinear distortion and noise valid for any filter of arbitrary order are developed, based on a matrix description of a general OTA-C filter model. A systematic optimization procedure using equivalence transformations is discussed. An application example of the proposed approach to optimal block sequencing and gain distribution of an 8th order cascade Butterworth filter is given. Theoretical results are verified using transistor-level simulation with CADENCE.
Keywords :
Butterworth filters; cascade networks; circuit optimisation; continuous time filters; nonlinear distortion; nonlinear network analysis; nonlinear network synthesis; operational amplifiers; continuous-time OTA-C filters; equivalence transformations; filter dynamic range; filter matrix description; filter output noise; high order cascade Butterworth filter; linearity optimization; nonlinear analysis; nonlinear distortion; optimal block sequencing; optimal gain distribution; transconductance-capacitor technique; Capacitors; Dynamic range; Electronic mail; Filters; Informatics; Linearity; Optimization; Transconductors; Transient analysis; Voltage;
Conference_Titel :
Electronics, Circuits and Systems, 2004. ICECS 2004. Proceedings of the 2004 11th IEEE International Conference on
Print_ISBN :
0-7803-8715-5
DOI :
10.1109/ICECS.2004.1399609
