Current Conveyor Based Relaxation Oscillator with Tunable Grounded Resistor/Capacitor

TLDR: In this article, a square wave generator using three second generation current conveyers, five resistors and one capacitor with independent control of frequency is presented, which is suitable for very large scale integration (VLSI) implementation.

Abstract: At the outset the foregoing document is represented by square-wave generator using three second generation current conveyers, five resistors and one capacitor with independent control of frequency is presented. The unique features associated with such waveform generator are the easy tunability of frequency over a range of 15 Hz to 150 kHz, extremely low sensitivities as well as suitable for very large scale integration (VLSI) implementation. The working capacity of the proposed circuit is examined with the aid of SPICE models of IC AD 844 AN. Later, the circuit was built with commercially available current feedback operational amplifiers (AD 844 AN), passive components used externally and tested for waveform generation and tunability. Results achieved prove better agreement with the theoretical values. And the non-idealities also are examined.