Title :
Dynamic range optimization of continuous-time Gm-C filters
Author :
Fernández-Bootello, J.F. ; Delgado-Restituto, M. ; Rodríguez-Vázquez, A.
Author_Institution :
Instituto de Microclectonica de Sevilla, Centro Nacional de Microelectron., Sevilla, Spain
fDate :
28 Aug.-2 Sept. 2005
Abstract :
This paper presents a fast procedure for the system-level evaluation of noise and distortion in continuous-time Gm-C filters. The presented approach is based on Volterra´s series expansion and matrix algebra manipulation. This procedure has been integrated in a constrained optimization routine to improve the dynamic range of filters while keeping the area and power consumption at a minimum. A seventh-order, elliptic, Gm-C low-pass filter, realized in a 0.18μm CMOS technology, following the proposed procedure, demonstrates the suitability of the approach.
Keywords :
CMOS integrated circuits; Volterra series; elliptic filters; low-pass filters; matrix algebra; nonlinear filters; 0.18 micron; CMOS integrated circuit; Volterra series; continuous-time Gm-C filter; elliptic filter; filter dynamic range optimization; low-pass filter; matrix algebra; Capacitance; Circuit simulation; Dynamic range; Harmonic distortion; Kernel; Linearity; Matrices; Power harmonic filters; Transconductors; Transfer functions;
Conference_Titel :
Circuit Theory and Design, 2005. Proceedings of the 2005 European Conference on
Print_ISBN :
0-7803-9066-0
DOI :
10.1109/ECCTD.2005.1523029
