Abstract

This paper describes a voltage mode third-order quadrature sinusoidal oscillator (TOQSO) based on operational transconductance amplifiers (OTAs). The proposed configuration uses three OTAs and three grounded capacitors. Outputs of two voltage mode sinusoids with 90° phase difference are found in the proposed oscillator circuit. The condition of oscillation and frequency of oscillation are independently electronically controllable by separate transconductances of the OTAs. The performance of TOQSO is tested by SPICE (version 16.5) simulation using TSMC 0.18 µm technology parameters and experimental results employing CA3080 type IC OTAs have been presented to confirm the workability of the proposed new configuration.

中文翻译：

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采用CMOS-OTA的电子可控三阶正交正弦振荡器

摘要

本文介绍了一种基于运算跨导放大器（OTA）的电压模式三阶正交正弦振荡器（TOQSO）。提议的配置使用三个OTA和三个接地电容器。在所提出的振荡器电路中可以找到两个相位差为90°的电压模式正弦波的输出。振荡的条件和振荡的频率可以通过OTA的独立跨导独立地电子控制。TOSPSO的性能通过使用台积电（TSMC）0.18 µm技术参数的SPICE（版本16.5）仿真进行了测试，并提出了使用CA3080型IC OTA的实验结果，以确认所提出的新配置的可操作性。