Digitally programmable CMOS current-conveyor circuit for filter design

Author

Farag, Fathi A.

Author_Institution

Electron. & Commun. Dept., Zagazig Univ., Zagazig, Egypt

fYear

2009

fDate

9-10 July 2009

Firstpage

1

Lastpage

4

Abstract

This paper presents a new topology for a fully digitally programmable current-mode filter. The proposed scheme is based on the current conveyor cell in. The circuit is preferred for low power low voltage applications since it is based on CMOS inverters and op-amps only. The proposed circuit is employed to implement digitally variable capacitor for low cut off frequency filter design. The proposed circuits have been designed and simulated using the IBM CMOS 0.13 mum process. Error analysis is also provided in detail and performance improvement is discussed. Simulation results show good agreement with the analytical calculations. The static power dissipation is equal to 0.1 mW from 1.5 V supply.

Keywords

CMOS integrated circuits; current conveyors; digital filters; error analysis; invertors; network topology; operational amplifiers; CMOS inverters; digitally programmable CMOS current-conveyor circuit; digitally programmable current-mode filter; error analysis; filter design; op-amps; size 0.13 mum; topology; CMOS digital integrated circuits; CMOS process; Capacitors; Circuit simulation; Circuit topology; Digital filters; Frequency; Inverters; Low voltage; Operational amplifiers;

fLanguage

English

Publisher

ieee

Conference_Titel

Signals, Circuits and Systems, 2009. ISSCS 2009. International Symposium on

Conference_Location

Iasi

Print_ISBN

978-1-4244-3785-6

Electronic_ISBN

978-1-4244-3786-3

Type

conf

DOI

10.1109/ISSCS.2009.5206223

Filename

5206223