高精度片上电源的研究与实现

发布时间：2018-03-04 01:28

本文选题：无片外电容的低压差线性稳压器　切入点：带隙基准源　出处：《复旦大学》2014年硕士论文　论文类型：学位论文

【摘要】：21世纪,科技日新月异,整个信息产业和半导体工业相互促进,迅猛发展。人们对大数据处理的日益渴望及对如智能手机、平板电脑的依赖,对集成电路的速度、功耗都提出了更高的要求。纳米工艺的普及和进一步发展成为大势所趋,芯片面积和成本的考虑使得片上系统仍将在可以预见的未来主导模拟集成电路的方向。电源电压的降低,电路速度的提高都对模拟电路的电源电路和基准电路提出了更高的苛刻要求。本文正是基于如何实现完全集成于片内的适应于高精度模拟集成电路电源和基准这一研究热点,展开分析、探讨,并最终在高速高精度模数转换器和智能温度传感器这两个不同类型的电路中进行了芯片实现。本文对几种常用的带运放的带隙基准源进行了详尽分析,对它们的性能从温漂、失调、环路稳定性、噪声、电源抑制比、启动等多个方面进行了比较。同时亦对无片外电容低压差线性稳压器进行了较为详尽的论述,对其各项指标进行分析和理论推导。在具体的设计中,结合不同系统对电路性能要求的侧重点,选取优化了电路结构,并最终都进行了流片。本文的主要亮点在于：1.总结提出了一套简单可行适应于绝大多数模拟集成电路的系统分析电路的电源抑制比和器件噪声的理论,并依托该理论对本文涉及的运放、带隙基准源、线性稳压器等主要模块的相关特性进行了优化。2.采用开环复制源跟随器的方案有效缓解了高速高精度模数转换器基准电压产生的难题。3.从满足高精度模拟电路需求的角度分析了现有的主要带隙基准的电路结构,并从理论分析和电路实现两个角度相互印证。
[Abstract]:In 21th century, with the rapid development of science and technology, the whole information industry and semiconductor industry promoted each other and developed rapidly. The popularization and further development of nanotechnology has become the trend of the times. Considering chip size and cost, on-chip systems will still dominate the direction of analog integrated circuits for the foreseeable future. The improvement of the speed of the circuit puts forward higher demanding requirements for the power supply circuit and the reference circuit of the analog circuit. This paper is just based on the research focus of how to realize the complete integration of the power supply and the reference for the high precision analog integrated circuit, which is suitable for the high precision analog integrated circuit. In this paper, several kinds of bandgap reference sources with operational amplifier are analyzed in detail, which are implemented in two different types of circuits, such as high speed and high precision A / D converter and intelligent temperature sensor. Their performances are compared in terms of temperature drift, misalignment, loop stability, noise, power supply rejection ratio, startup and so on. At the same time, the low voltage differential linear voltage regulator without off-chip capacitance is discussed in detail. In the specific design, combined with the emphasis of different systems on the circuit performance requirements, the circuit structure is selected and optimized. The main highlight of this paper is 1: 1.A simple and feasible theory of power supply rejection ratio and device noise for most analog integrated circuit analysis circuits is presented. And based on this theory, the operational amplifier, bandgap reference source, The characteristics of the main modules, such as linear voltage regulator, are optimized. 2. The open-loop copy source follower is adopted to effectively alleviate the problem of high speed and high precision analog converter reference voltage. 3. To meet the needs of high precision analog circuit. The current circuit structure of the main bandgap reference is analyzed. And from the theoretical analysis and circuit implementation of the two angles to verify each other.
【学位授予单位】：复旦大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TN86

【参考文献】