Paper Info
Title
An Active-C Current-Mode Universal First-Order Filter and Oscillator
Abstract
This paper presents an electronically tunable current-mode first-order universal filter. The proposed circuit employs only a single Extra-X Current-Controlled Conveyor (EX-CCCII) and a single grounded capacitor, which is suitable for IC implementation. The circuit can realize three current transfer functions simultaneously, namely low-pass, high-pass and all-pass. The proposed circuit exhibits low-input and high-output impedance, which is suitable for cascading. The pole frequency of the filter can be electronically tuned, by varying the bias current of EX-CCCII. The nonidealities and parasitic effects on the circuit performance are investigated in detail. Also, the Monte Carlo analysis is done to show the effect of active and passive element mismatches on the pole frequency. An eight-phase current-mode sinusoidal oscillator and current-mode second-order filter are further realized using the proposed circuit. The functionality of the proposed circuits is verified through PSPICE simulations, using 0.25-mu m TSMC CMOS technology parameters.
Year
DOI
Venue
2019
10.1142/S0218126619502190
JOURNAL OF CIRCUITS SYSTEMS AND COMPUTERS
Keywords
DocType
Volume
Current mode,current conveyor,analog circuits,oscillator,EX-CCCII
Journal
28
Issue
ISSN
Citations 
13.0
0218-1266
0
PageRank 
References 
Authors
0.34
8
2
Name
Order
Citations
PageRank
D. Agrawal100.68
Sudhanshu Maheshwari213222.48