An integrable electronic-controlled quadrature sinusoidal oscillator using CMOS operational transconductance amplifier

Prommee, Pipat; Dejhan, Kobchai

doi:10.1080/713810385

An integrable electronic-controlled quadrature sinusoidal oscillator using CMOS operational transconductance amplifier

Author(s)

Prommee, Pipat

Dejhan, Kobchai

Date Issued

January 1, 2002

Type

Article

DOI

10.1080/713810385

Abstract

This paper describes two approaches to implementing third-order oscillators. The first approach proposes a third-order oscillator using transconductors and capacitors. They are cascaded as two lossy and one lossless integrator circuit. This approach is a feedback from transconductance gain = 2. This first circuit is based on a basic transconductor with a simple configuration including 16 ransistors, four current sources and three capacitors. The second approach proposes a third-order oscillator using transconductors, capacitors and a transresistor circuit. These are cascaded as lossy integrator circuits and are fedback with voltage gain = 8. This voltage gain can be designed using a transconductor circuit and a transresistor circuit. This second circuit consists of 18 transistors, four current sources and three capacitors. Since both circuits use no resistors, they are suitable for further fabrication. These circuits use a ±3V power supply. © 2002 Taylor and Francis Group, LLC.

Citation

International Journal of Electronics, 89(5), 365-379, 2002