Current Conveyor-Based Square/Triangular Waveform Generators With Improved Linearity

被引：67

作者：

Pal, Dipankar ^{[1
,2
]}

Srinivasulu, Avireni ^{[2
]}

Pal, Basab Bijoy ^{[2
]}

Demosthenous, Andreas ^{[1
]}

Das, Barda Nand ^{[3
]}

机构：

[1] UCL, Dept Elect & Elect Engn, London WC1E 7JE, England

[2] BIT, Dept Elect & Commun Engn, Mesra 835215, India

[3] BIT, Dept Elect & Elect Engn, Mesra 835215, India

来源：

IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT | 2009年 / 58卷 / 07期

关键词：

Current conveyor (CCII plus ); hybrid matrix; square wave generator; triangular wave generator; OSCILLATOR;

D O I：

10.1109/TIM.2008.2006729

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Two second-generation current conveyor (CCII+)-based resistance-capacitance (RC) square/triangular waveform generators, which have been derived from their voltage-mode op-amp-based schemes, with independent control of frequency are presented in this paper. Each configuration consists of two positive second-generation conveyors (CCII(+)-"A" and CCII(+)-"B"), three resistors, and one floating capacitor that is responsible for better linearity. The frequency of the waveform generators can independently be adjusted with any passive device. The circuits were built with commercially available current feedback operational amplifiers (AD844) and passive components used externally and tested for waveform generation and tunability. The measured results included in the paper show excellent linear variation of frequency as compared with existing reported configurations over the range from 25 Hz to 260 kHz. The configurations that are suitable for very large scale integration (VLSI) realization find application in capacitive and resistive sensors and in neuro-fuzzy systems.

引用

页码：2174 / 2180

页数：7

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