New CMOS balanced output transconductor and application to GM-C biquad filter

Author

Mahmoud, Soliman A. ; Awad, Ihas A.

Author_Institution

Electron. & Commun. Eng. Dept., Cairo Univ., Fayoum, Egypt

Volume

1

fYear

2003

fDate

25-28 May 2003

Abstract

A new CMOS voltage controlled balanced output transconductor (BOTA) is introduced. Application of the CMOS BOTA in realizing mixed-mode filter implementation featuring electronic tunability is presented. The filter realizes second order lowpass, bandpass, highpass, allpass and notch responses. The proposed filter architecture uses grounded capacitors and allows modifying the quality factor without changing the center frequency. PSpice simulations are given to confirm the theoretical analysis.

Keywords

CMOS analogue integrated circuits; Q-factor; SPICE; all-pass filters; band-pass filters; biquadratic filters; circuit tuning; differential amplifiers; high-pass filters; low-pass filters; notch filters; operational amplifiers; CMOS BOTA; GM-C biquad filter; PSPICE simulation; all-pass response; band-pass response; electronic tunability; grounded capacitor; high-pass response; low-pass response; mixed-mode filter; notch response; quality factor; voltage controlled balanced output transconductor; Band pass filters; Capacitors; Circuits; Communication system control; Frequency; MOSFETs; Q factor; Threshold voltage; Transconductors; Voltage control;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems, 2003. ISCAS '03. Proceedings of the 2003 International Symposium on

Print_ISBN

0-7803-7761-3

Type

conf

DOI

10.1109/ISCAS.2003.1205581

Filename

1205581