Title :
Low frequency, current mode programmable KHN filters using large-valued active resistors
Author :
Muniz-Montero, C. ; González-Carvajal, Ramón ; Díaz-Sánchez, Alejandro ; Rocha, J. Miguel
Author_Institution :
Dpto. de Electronica., Instituto Nacional de Astrofisica Optica y Electronica, Puebla
Abstract :
The present work proposes a new current-mode, programmable Kerwin Huelsman Newcomb (KHN) filter suitable for very low frequency processing. The proposed implementation, developed with only six current mirrors and two large-valued, programmable active resistors, solves some of the more challenging problems of low frequency filtering. HSPICE simulation results using BSIM3.3 models for a 0.5-mum CMOS technology, are shown. Center frequencies in the range of 12.4 Hz-33 Hz, total harmonic distortion less than 1 %, and static power consumption of 1.05 mW, were observed.
Keywords :
CMOS analogue integrated circuits; current mirrors; current-mode circuits; low-pass filters; programmable circuits; resistors; 0.5 micron; 1.05 mW; 12.4 to 33 Hz; BSIM3.3 models; CMOS technology; HSPICE simulation results; Kerwin Huelsman Newcomb filter; current mirrors; current mode programmable KHN filters; large-valued active resistors; low frequency filtering; programmable active resistors; Active filters; CMOS technology; Energy consumption; Filtering; Frequency; Mirrors; Power harmonic filters; Resistors; Semiconductor device modeling; Total harmonic distortion;
Conference_Titel :
Circuits and Systems, 2007. ISCAS 2007. IEEE International Symposium on
Conference_Location :
New Orleans, LA
Print_ISBN :
1-4244-0920-9
Electronic_ISBN :
1-4244-0921-7
DOI :
10.1109/ISCAS.2007.377883
