Design of a switched opamp-based bandpass filter in a 0.35 μm CMOS technology

Author

Quintanilla, L. ; Arias, J. ; Enríquez, L. ; Vicente, J. ; Barbolla, J. ; Vázquez, D. ; Rueda, A.

Author_Institution

E.T.S. de Ingenieros de Telecomunicacion, Valladolid Univ., Spain

Volume

1

fYear

2002

fDate

2002

Firstpage

29

Abstract

A fully differential bandpass filter based on the switched-opamp approach is designed in this work. It was realized in a 0.35 μm CMOS technology, and is able to operate from a single 1 V supply voltage with a power drain of 230 μW. As a main internal filter component, a fully differential switched opamp was also designed. Its common mode feedback circuit was implemented by using a switched capacitor network along with an error amplifier. Both the opamp and the filter were simulated with the Spectre program. Simulation results obtained by using the extracted circuit from the layout are presented.

Keywords

CMOS analogue integrated circuits; active filters; band-pass filters; circuit feedback; low-power electronics; switched filters; 0.35 micron; 1 V; 230 muW; CMOS technology; Spectre program; common mode feedback circuit; error amplifier; extracted circuit; fully differential bandpass filter; internal filter component; power drain; switched opamp-based bandpass filter; Band pass filters; CMOS technology; Circuit simulation; Costs; Feedback circuits; Low voltage; Power supplies; Switched capacitor networks; Switches; Telecommunication switching;

fLanguage

English

Publisher

ieee

Conference_Titel

Electronics, Circuits and Systems, 2002. 9th International Conference on

Print_ISBN

0-7803-7596-3

Type

conf

DOI

10.1109/ICECS.2002.1045325

Filename

1045325