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

fYear

2007

fDate

27-30 May 2007

Firstpage

3868

Lastpage

3871

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;

fLanguage

English

Publisher

ieee

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

Type

conf

DOI

10.1109/ISCAS.2007.377883

Filename

4253526