A 100Hz Low-Pass 2nd Order Sallen-and-Key Active Filter: A Design Proposal

Author

Rosales, E.B.O. ; Ibarra, F.S.

Author_Institution

Centro de Investig. y Estudios Av. (CINVESTAV) Unidad-Guadalajara, Zapopan, Mexico

Volume

12

Issue

2

fYear

2014

fDate

Mar-14

Firstpage

73

Lastpage

77

Abstract

This paper presents a design methodology for developing a Butterworth type 100Hz low-pass second order Sallen-and-Key active filter. The proposed design method is intended to design filtering systems based on commercial components. Since these components have tolerances, a relative sensitivity analysis is included in order to satisfy design specifications. Experimental results show a maximum relative error, ε_r=2.0%, at the cut-off frequency; the Op-Amp UA741 is used.

Keywords

Butterworth filters; active filters; low-pass filters; operational amplifiers; Butterworth filter; Sallen-and-Key active filter; filtering systems; frequency 100 Hz; low-pass filter; op-amp UA741; relative sensitivity analysis; second order active filter; Active filters; Design methodology; Frequency-domain analysis; Sensitivity analysis; Active filters; Butterworth approach; electric characterization; frequency domain; teaching;

fLanguage

English

Journal_Title

Latin America Transactions, IEEE (Revista IEEE America Latina)

Publisher

ieee

ISSN

1548-0992

Type

jour

DOI

10.1109/TLA.2014.6749520

Filename

6749520