Highly Linear Programmable Low-Pass CMOS Filter

Author

Sanz, M. Teresa ; Celma, Santiago ; Calvo, Belén

Author_Institution

Fac. de Ciencias, Univ. de Zaragoza

fYear

2006

fDate

26-28 April 2006

Firstpage

47

Lastpage

51

Abstract

A highly linear 4^th order low-pass filter with one decade frequency programmability and 39dB gain programmability is presented in this paper. Low distortion is achieved through the use of the inherently linear current division principle. The paper provides the basic equations of the Butterworth filter and shows how to achieve programmability. A prototype was fabricated in a 0.35mum CMOS process and experimental measurements prove the high linearity of the system. A distortion level better than -65dB for 2V_p-p output signal is obtained

Keywords

Butterworth filters; CMOS integrated circuits; distortion; low-pass filters; programmable filters; 0.35 micron; 2 V; 39 dB; Butterworth filter; CMOS process; fourth order low-pass filter; frequency programmability; gain programmability; highly linear programmable filter; inherently linear current division principle; low-pass CMOS filter; Baseband; CMOS technology; Circuit optimization; Distortion; Frequency; Linearity; Low pass filters; Nonlinear filters; Virtual colonoscopy; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Devices, Circuits and Systems, Proceedings of the 6th International Caribbean Conference on

Conference_Location

Playa del Carmen

Print_ISBN

1-4244-0041-4

Electronic_ISBN

1-4244-0042-2

Type

conf

DOI

10.1109/ICCDCS.2006.250836

Filename

4016864