發(fā)布時(shí)間：2018-04-13 00:09

  本文選題：Sigma-Delta調(diào)制器 + MASH結(jié)構(gòu)�。� 參考：《哈爾濱工業(yè)大學(xué)》2017年碩士論文

【摘要】：數(shù)字硅陀螺接口電路無論是在軍事領(lǐng)域還是在日常生活中都占有很重要的地位,而自然界中連續(xù)的物理量采集變成更易操作的離散值就離不開模數(shù)轉(zhuǎn)化器(ADC)這個(gè)媒介。Sigma-Delta(ΣΔ)調(diào)制器又是ADC的重要模塊,其性能與整個(gè)接口電路的功能實(shí)現(xiàn)息息相關(guān)�；诠枮I工業(yè)大學(xué)微機(jī)電系統(tǒng)研究中心多年來致力于對陀螺接口電路的研究,本論文設(shè)計(jì)完成了一款應(yīng)用于其中的2-1-1 MASH(Multi-stAge noise SHaping)結(jié)構(gòu)ΣΔ調(diào)制器。本文在對國內(nèi)外MASH調(diào)制器進(jìn)行了調(diào)研的基礎(chǔ)上,詳細(xì)分析了調(diào)制器的工作原理以及不同結(jié)構(gòu)的特點(diǎn),采用Matlab對MASH調(diào)制器進(jìn)行了系統(tǒng)建模和仿真分析,最終確定了設(shè)計(jì)的系統(tǒng)結(jié)構(gòu)。此外,本文還將介紹系統(tǒng)中包含的非理想因素與最終設(shè)計(jì)結(jié)果之間的關(guān)系,對加入這些影響因子后的MASH結(jié)構(gòu)系統(tǒng)進(jìn)行系統(tǒng)建模和仿真。在系統(tǒng)建模的基礎(chǔ)上,本文基于0.35 um 5V標(biāo)準(zhǔn)CMOS工藝完成了各個(gè)模塊的電路級設(shè)計(jì),并借助Cadence的spectre工具完成了各部分電路的功能驗(yàn)證。其中積分器選擇了全差分雙參考電壓的開關(guān)電容結(jié)構(gòu),很好的抑制噪聲;運(yùn)放選取能夠兼顧高增益和輸出電壓范圍的兩級套筒共源共柵形式;還完成了量化器、MOS互補(bǔ)開關(guān)、時(shí)鐘電路以及數(shù)字抵消邏輯的設(shè)計(jì)。模擬和數(shù)字部分的功能均達(dá)到設(shè)計(jì)要求后,采用SpectreVerilog對數(shù)�；旌想娐愤M(jìn)行了仿真,當(dāng)輸入信號帶寬為10KHz,采樣頻率2.56MHz,得到最終所選MASH結(jié)構(gòu)調(diào)制系統(tǒng)能達(dá)到的SNDR是103.86 dB,有效精度16.96 bits。最后,在華虹0.35 um CMOS工藝下完成了整體電路版圖的繪制與后仿,并通過了DRC、LVS驗(yàn)證,版圖的面積估算為2?um13952736。后仿系統(tǒng)能達(dá)到的SNDR是99.64 dB,有效精度16.26 bits。
[Abstract]:Digital silicon gyroscope interface circuit plays an important role in military field and daily life.However, the acquisition of continuous physical quantities in nature becomes a more easily operable discrete value, which is inseparable from the analog to digital converter (ADC), the medium. Sigma-Delta (危 螖) modulator is also an important module of ADC. Its performance is closely related to the function realization of the whole interface circuit.Based on the research of gyroscope interface circuits in MEMS Research Center of Harbin University of Technology for many years, a 2-1-1 MASH(Multi-stAge noise SHaping-based 危 螖 modulator is designed and implemented in this paper.Based on the investigation of the MASH modulator at home and abroad, the working principle of the modulator and the characteristics of different structures are analyzed in detail. The system modeling and simulation analysis of the MASH modulator are carried out by using Matlab.Finally, the system structure is determined.In addition, the relationship between the non-ideal factors contained in the system and the final design results will be introduced, and the system modeling and simulation of the MASH structure system with these influence factors will be carried out.On the basis of system modeling, the circuit level design of each module is completed based on 0.35um 5V standard CMOS process, and the functional verification of each part of the circuit is completed by means of spectre tool of Cadence.The integrator chooses the switch capacitor structure of fully differential double reference voltage, which can suppress noise very well; the operational amplifier selects the two-stage sleeve common grid form which can take into account the high gain and output voltage range; and the quantizer MOS complementary switch is also completed.Design of clock circuit and digital offset logic.After the functions of the analog and digital parts meet the design requirements, the digital-analog hybrid circuit is simulated by SpectreVerilog. When the input signal bandwidth is 10kHz and the sampling frequency is 2.56MHz, the SNDR of the final selected MASH modulation system is 103.86 dB and the effective precision is 16.96bit / s.Finally, the layout of the whole circuit has been drawn and simulated in the Huahong 0.35um CMOS process, and it has been verified by the DRCs. The area of the layout is estimated to be 2um 13952736.The SNDR of the post-simulation system is 99.64 dB and the effective precision is 16.26 bits.
【學(xué)位授予單位】：哈爾濱工業(yè)大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：TN761

【參考文獻(xiàn)】

相關(guān)博士學(xué)位論文 前1條

1 曹桂平;高精度Sigma-Delta調(diào)制器研究及ASIC實(shí)現(xiàn)[D];中國科學(xué)技術(shù)大學(xué);2012年

相關(guān)碩士學(xué)位論文 前5條

1 劉達(dá);TMR傳感器中高精度多位量化Sigma-Delta調(diào)制器的設(shè)計(jì)[D];哈爾濱工業(yè)大學(xué);2016年

2 董建良;十四階開關(guān)電容帶通濾波器的研究與設(shè)計(jì)[D];哈爾濱工業(yè)大學(xué);2015年

3 姬厚琛;用于計(jì)量的高精度Delta-Sigma ADC的設(shè)計(jì)[D];哈爾濱工業(yè)大學(xué);2014年

4 倪春曉;24位96KSPSΣ-Δ調(diào)制器的設(shè)計(jì)[D];電子科技大學(xué);2013年

5 劉正軍;一種4階Sigma-Delta調(diào)制器的研究與設(shè)計(jì)[D];東南大學(xué);2005年

，

本文編號：1742043