A novel continuous-time current-mode differentiator and its applications

Author

El-Masry, Ezz I. ; Gates, John W.

Author_Institution

Tech. Univ. Nova Scotia, Halifax, NS, Canada

Volume

43

Issue

1

fYear

1996

fDate

1/1/1996 12:00:00 AM

Firstpage

56

Lastpage

59

Abstract

A novel continuous-time current-mode differentiator with a frequency range extending from DC to 100 MHz is presented. This circuit is constructed using a capacitively coupled current mirror. General first- and second-order circuits, using the differentiator, have also been introduced. To demonstrate how the proposed differentiator can be used to construct higher order filters, a sixth-order band-pass filter with a center frequency at 2.5 MHz and a 1 dB pass-band ripple has been realized and simulated. All simulations were performed using HSPICE for a 1.2 μm CMOS process. The total power dissipation for the sixth-order filter is 23 mW from a single 3 V supply

Keywords

analogue processing circuits; band-pass filters; continuous time filters; differentiating circuits; radiofrequency filters; 0 to 100 MHz; 1.2 micron; 23 mW; 3 V; CMOS process; HSPICE simulation; capacitively coupled current mirror; continuous-time differentiator; current-mode differentiator; higher order filters; sixth-order bandpass filter; Arthritis; Band pass filters; CMOS technology; Capacitors; Circuit simulation; Coupling circuits; Digital filters; Frequency; Operational amplifiers; Power dissipation;

fLanguage

English

Journal_Title

Circuits and Systems II: Analog and Digital Signal Processing, IEEE Transactions on

Publisher

ieee

ISSN

1057-7130

Type

jour

DOI

10.1109/82.481476

Filename

481476