低温漂环形振荡器的分析与设计

发布时间：2018-02-02 03:27

本文关键词： 环形振荡器电流控制低温漂 DC-DC转换器　出处：《南京邮电大学》2015年硕士论文　论文类型：学位论文

【摘要】：作为众多电子装置的关键部件,振荡器的应用范围从微处理芯片中的时钟生成到蜂窝电话中的载波合成,对结构和性能参数提出了差别特别大的需求。随着CMOS工艺技术的发展,振荡器的结构不断变化,这不仅满足了电路设计者的选择需求,而且也满足了振荡器在不同场合下的应用。环形振荡器所具有的特殊属性使其更加有利于设计频率高、调节范围宽、线性度高的振荡器。然而温度对振荡器的频率稳定性具有较大影响,因此有必要对环形振荡器的温度进行补偿。本文针对低温漂的环形振荡器进行了研究设计,提出了电流控制的结构,首先介绍了振荡器的研究背景及研究现状;而后介绍了振荡器的工作原理及环形振荡器的基本结构;接下来根据设计方案对模块电路及整体电路进行了设计并且使用仿真软件进行了仿真验证;最后对版图部分进行了设计。本文使用标准的CSMC 0.5um CMOS工艺库进行了电路的设计仿真,通过模拟仿真实现了低温漂的环形振荡器的设计。仿真结果显示输出频率大约在1.2MHz左右,当温度从0℃-100℃变化时,频率变化率(△f/f)大约为7.4‰。本文设计的环形振荡器特别适合应用于DC-DC转换器中。
[Abstract]:As a key part of many electronic devices, oscillator applications range from the micro processing chip in the clock generation to carrier synthesis in a cellular phone, the difference is particularly large demand on the structure and performance parameters. With the development of CMOS technology, changing oscillator structure, which not only meets the demand to choose the circuit designers. But also to meet the application of oscillator in different occasions. The special properties of the ring oscillator is more conducive to the design of high frequency, wide adjustment range, high linearity of the oscillator. However, temperature on the vibration frequency stability device has a great influence, so it is necessary to compensate the temperature. This paper studies the ring oscillator for the design of low temperature drift of ring oscillator, puts forward the structure of current control, first introduced the research background and research situation of the oscillator and the dielectric; Introduces the basic structure and working principle of the ring oscillator oscillator; next according to the design of circuit and the whole circuit and the use of simulation software for the simulation of the layout; finally the part of the design. This paper use the standard CSMC 0.5um CMOS technology base for the simulation, through the simulation to achieve the design of low temperature drift of ring oscillator. The simulation results show that the output frequency is about 1.2MHz, when the temperature from 0 DEG -100 DEG change, frequency change rate (f/f) is about 7.4 per thousand. The design of the ring oscillator is especially suitable for application in DC-DC converter.

【学位授予单位】：南京邮电大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TN752

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