全数字高精度低功耗晶振关键技术研究

项目名称： 全数字高精度低功耗晶振关键技术研究

项目编号： No.61306025

项目类型： 青年科学基金项目

立项/批准年度： 2014

项目学科： 无线电电子学、电信技术

项目作者： 赵慧冬

作者单位： 中国科学院微电子研究所

项目金额： 25万元

中文摘要： 人体健康监护系统对集成电路元器件有着高集成度和低功耗的需求，晶振作为极少数不能被集成的元器件，成为限制系统功耗和体积的关键因素。本课题针对这一难题和瓶颈，创新性地提出全数字、高精度、低功耗数字晶振架构及全数字的设计方法。探索建立全集成CMOS数字晶振模型，揭示PVT对时钟信号的影响规律。研究全数字环形振荡器及其PVT校正技术，获取工艺、电压和温度等物理量对环振延迟的影响，建立数字晶振PVT校正模型；研究全数字时钟频率校准技术，基于低功耗时钟网络对全集成的数字时钟进行频率校准；研究数字晶振及其校准电路的低功耗实现方式及其VLSI设计架构；给出全数字、高精度、低功耗晶振的设计方法，实现全数字、低功耗、低成本的时钟电路，为该技术广泛应用提供思路。

中文关键词： 时钟生成；全数字；低功耗；PVT；

英文摘要： Demand for the high degree integration and low power of the integrated circuits (IC) devices in the body health monitor system is very urgent. However, the crystal oscillator, as one of the few devices which cannot be integrated in the circuits, is becoming the main limiting factor for the decreasing of power and size of the system. The project proposes an innovative structure and design method of all-digital, high accuracy and low power oscillator. The proposal tries to build the model of the CMOS all-digital oscillator and explain the law of the PVT (Process, Voltage and Temperature)'s effect on the oscillator. The calibration model of PVT's effect on the all-digital oscillator will be obtained through the research on the all-digital ring oscillator and the PVT-calibration technique and the modeling of the effect of PVT on the delay of ring-oscillator. The research will focus on the all-digital calibration method on the frequency of clock based on the low power clock network and VLSI structure of digital oscillator and the calibration circuit. The research will present the design method of all-digital, high accuracy and low-power oscillator and implement an all-digital, low-power and low-cost clock-generation circuit, and provide thought for its wide application.

英文关键词： Clock generator；all-digital；low power；PVT；