专用于超声波发射机的宽调谐范围压控环形振荡器

Proceedings. The 16th International Conference on Microelectronics, 2004. ICM 2004. Pub Date : 2004-12-06 DOI:10.1109/ICM.2004.1434276

X. Zhao, R. Chebli, M. Sawan

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引用次数: 34

摘要

本文提出了一种新的压控环形振荡器(VCO)设计方案。该电路采用DALSA半导体提供的0.8 /spl mu/m高压CMOS/DMOS技术，采用5v电源，利用相对较小的器件尺寸和较低的级数实现低频工作。新的压控振荡器结合了三种控制方法来改变振荡频率。所提出的VCO拓扑结构具有从13 Hz到407 MHz的极宽调谐范围，具有良好的瞬态特性，这是传统VCO难以获得的。其最大振荡频率下的功耗为29.2 mW。

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A wide tuning range voltage-controlled ring oscillator dedicated to ultrasound transmitter

In this paper, a new design for a voltage-controlled ring oscillator (VCO) is presented. Implemented in 0.8 /spl mu/m high-voltage CMOS/DMOS technology provided by DALSA semiconductor with 5 V power supply, this circuit uses relatively devices dimensions and low stages number to operate at low frequency. The new VCO combines three control methods to vary the oscillation frequency. The proposed VCO topology exhibits a very wide tuning range from 13 Hz to 407 MHz with good transient characteristics, which is difficult to get from the conventional VCO. Its power consumption at the maximum oscillation frequency is 29.2 mW.

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Proceedings. The 16th International Conference on Microelectronics, 2004. ICM 2004.

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