Title :
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
fDate :
1/1/1996 12:00:00 AM
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;
Journal_Title :
Circuits and Systems II: Analog and Digital Signal Processing, IEEE Transactions on
