Highlights the LTC1062 as a lowpass filter in a phase lock loop. Describes how the loop's bandwidth can be increased and the VCO output jitter reduced when the LTC1062 is the loop filter. Compares it with a passive RC loop filter. Also discussed is the use of LTC1062 as simple bandpass and bandstop filter.
上傳時間： 2013-10-24
上傳用戶：chens000
Portable, battery-powered operation of electronic apparatushas become increasingly desirable. Medical, remotedata acquisition, power monitoring and other applicationsare good candidates for battery operation. In some circumstances,due to space, power or reliability considerations,it is preferable to operate the circuitry from a single 1.5Vcell. Unfortunately, a 1.5V supply eliminates almost alllinear ICs as design candidates. In fact, the LM10 opamp-reference and the LT®1017/LT1018 comparators arethe only IC gain blocks fully specifi ed for 1.5V operation.Further complications are presented by the 600mV dropof silicon transistors and diodes. This limitation consumesa substantial portion of available supply range, makingcircuit design diffi cult. Additionally, any circuit designedfor 1.5V operation must function at end-of-life batteryvoltage, typically 1.3V. (See Box Section, “Componentsfor 1.5V Operation.”)
標(biāo)簽： Circuitry Operation Single 1017
上傳時間： 2013-12-20
上傳用戶：Wwill
分析了調(diào)幅信號和載波信號之間的相位差與調(diào)制信號的極性的對應(yīng)關(guān)系,得出了相敏檢波電路輸出電壓的極性與調(diào)制信號的極性有對應(yīng)關(guān)系的結(jié)論。為了驗證相敏檢波電路的這一特性,給出3 個電路方案,分別選用理想元件和實際元件,采用Multisim 對其進行仿真實驗,直觀形象地演示了相敏檢波電路的鑒相特性,是傳統(tǒng)的實際操作實驗所不可比擬的。關(guān)鍵詞:相敏檢波;鑒相特性;Multisim;電路仿真 Abstract : The corresponding relation between modulation signal polarity and difference phases of amplitudemodulated signal and the carrier signal ,the polarity of phase2sensitive detecting circuit output voltage and the polarity of modulation signal are correspondent . In order to verify this characteristic ,three elect ric circuit s plans are produced ,idea element s and actual element s are selected respectively. Using Multisim to carry on a simulation experiment ,and then demonst rating the phase detecting characteristic of the phase sensitive circuit vividly and directly. Which is t raditional practical experience cannot be com pared.Keywords :phase sensitive detection ;phase2detecting characteristic ;Multisim;circuit simulation
上傳時間： 2013-11-23
上傳用戶：guanhuihong
TCS ECN Background & Key TermsTrust Issues with PCIe PlatformsTCS ECN DetailsTrusted Config Space and TCS TransactionsTrusted Config Access Mech (TCAM)Standard vs Trusted Config AccessNew Capability StructuresTCS Support in Root Ports, Switches, & BridgesTCS “Does not…” ListExample Trusted Computing PlatformRevisiting the Trust IssuesKey Takeaways/Call to ActionQuestions
標(biāo)簽： Configuration Trusted PCIe Spa
上傳時間： 2013-11-21
上傳用戶：hsfei8
Radio Frequency Integrated Circuit Design I enjoyed reading this book for a number of reasons. One reason is that itaddresses high-speed analog design in the context of microwave issues. This isan advanced-level book, which should follow courses in basic circuits andtransmission lines. Most analog integrated circuit designers in the past workedon applications at low enough frequency that microwave issues did not arise.As a consequence, they were adept at lumped parameter circuits and often notcomfortable with circuits where waves travel in space. However, in order todesign radio frequency (RF) communications integrated circuits (IC) in thegigahertz range, one must deal with transmission lines at chip interfaces andwhere interconnections on chip are far apart. Also, impedance matching isaddressed, which is a topic that arises most often in microwave circuits. In mycareer, there has been a gap in comprehension between analog low-frequencydesigners and microwave designers. Often, similar issues were dealt with in twodifferent languages. Although this book is more firmly based in lumped-elementanalog circuit design, it is nice to see that microwave knowledge is brought inwhere necessary.Too many analog circuit books in the past have concentrated first on thecircuit side rather than on basic theory behind their application in communications.The circuits usually used have evolved through experience, without asatisfying intellectual theme in describing them. Why a given circuit works bestcan be subtle, and often these circuits are chosen only through experience. Forthis reason, I am happy that the book begins first with topics that require anintellectual approach—noise, linearity and filtering, and technology issues. Iam particularly happy with how linearity is introduced (power series). In therest of the book it is then shown, with specific circuits and numerical examples,how linearity and noise issues arise.
標(biāo)簽： Rogers Radio John Freq
上傳時間： 2014-12-23
上傳用戶：han_zh
模擬集成電路的設(shè)計與其說是一門技術(shù)，還不如說是一門藝術(shù)。它比數(shù)字集成電路設(shè)計需要更嚴格的分析和更豐富的直覺。嚴謹堅實的理論無疑是嚴格分析能力的基石，而設(shè)計者的實踐經(jīng)驗無疑是誕生豐富直覺的源泉。這也正足初學(xué)者對學(xué)習(xí)模擬集成電路設(shè)計感到困惑并難以駕馭的根本原因。.美國加州大學(xué)洛杉機分校(UCLA)Razavi教授憑借著他在美國多所著名大學(xué)執(zhí)教多年的豐富教學(xué)經(jīng)驗和在世界知名頂級公司(AT&T，Bell Lab，HP)卓著的研究經(jīng)歷為我們提供了這本優(yōu)秀的教材。本書自2000午出版以來得到了國內(nèi)外讀者的好評和青睞，被許多國際知名大學(xué)選為教科書。同時，由于原著者在世界知名頂級公司的豐富研究經(jīng)歷，使本書也非常適合作為CMOS模擬集成電路設(shè)計或相關(guān)領(lǐng)域的研究人員和工程技術(shù)人員的參考書。... 本書介紹模擬CMOS集成電路的分析與設(shè)計。從直觀和嚴密的角度闡述了各種模擬電路的基本原理和概念，同時還闡述了在SOC中模擬電路設(shè)計遇到的新問題及電路技術(shù)的新發(fā)展。本書由淺入深，理論與實際結(jié)合，提供了大量現(xiàn)代工業(yè)中的設(shè)計實例。全書共18章。前10章介紹各種基本模塊和運放及其頻率響應(yīng)和噪聲。第11章至第13章介紹帶隙基準、開關(guān)電容電路以及電路的非線性和失配的影響，第14、15章介紹振蕩器和鎖相環(huán)。第16章至18章介紹MOS器件的高階效應(yīng)及其模型、CMOS制造工藝和混合信號電路的版圖與封裝。 1 Introduction to Analog Design 2 Basic MOS Device Physics 3 Single-Stage Amplifiers 4 Differential Amplifiers 5 Passive and Active Current Mirrors 6 Frequency Response of Amplifiers 7 Noise 8 Feedback 9 Operational Amplifiers 10 Stability and Frequency Compensation 11 Bandgap References 12 Introduction to Switched-Capacitor Circuits 13 Nonlinearity and Mismatch 14 Oscillators 15 Phase-Locked Loops 16 Short-Channel Effects and Device Models 17 CMOS Processing Technology 18 Layout and Packaging
標(biāo)簽： analog design cmos of
上傳時間： 2014-12-23
上傳用戶：杜瑩12345
enter——選取或啟動 esc——放棄或取消 f1——啟動在線幫助窗口 tab——啟動浮動圖件的屬性窗口 pgup——放大窗口顯示比例 pgdn——縮小窗口顯示比例 end——刷新屏幕 del——刪除點取的元件（1個） ctrl+del——刪除選取的元件（2個或2個以上） x+a——取消所有被選取圖件的選取狀態(tài) x——將浮動圖件左右翻轉(zhuǎn) y——將浮動圖件上下翻轉(zhuǎn) space——將浮動圖件旋轉(zhuǎn)90度 crtl+ins——將選取圖件復(fù)制到編輯區(qū)里 shift+ins——將剪貼板里的圖件貼到編輯區(qū)里 shift+del——將選取圖件剪切放入剪貼板里 alt+backspace——恢復(fù)前一次的操作 ctrl+backspace——取消前一次的恢復(fù) crtl+g——跳轉(zhuǎn)到指定的位置 crtl+f——尋找指定的文字
上傳時間： 2013-12-29
上傳用戶：13033095779
收文單位：左列各單位 發(fā)文字號： MT-8-2-0037
標(biāo)簽： PCB 工藝設(shè)計 華碩 設(shè)計規(guī)范
上傳時間： 2013-12-17
上傳用戶：123312
本文提出用級聯(lián)多電平逆變器取代變壓器多重化結(jié)構(gòu)的STATCOM 拓撲結(jié)構(gòu)，用載波相移正弦脈寬調(diào)制技術(shù)(Carrier phase-shifted SPWM，以下簡稱CPS-SPWM)取代工頻調(diào)制。這種基于CPS-SPWM 級聯(lián)多電平逆變器的STATCOM 不僅去掉了多重化變壓器，而且用較低的開關(guān)頻率可以獲得較高的等效開關(guān)頻率的輸出效果，簡化了濾波；針對電力系統(tǒng)強耦合、非線性的特征，本文提出了將自抗擾控制應(yīng)用于STATCOM 裝置的控制策略，此控制策略不但可以大大縮短動態(tài)過程，改善系統(tǒng)的動態(tài)性能，而且具有較強的魯棒性。
標(biāo)簽： STATCOM 級聯(lián) 電平逆變器
上傳時間： 2013-11-20
上傳用戶：maqianfeng
The LTC®3414 offers a compact and efficient voltage regulatorsolution for point of load conversion in electronicsystems that require low output voltages (down to 0.8V)from a 2.5V to 5V power bus. Internal power MOSFETswitches, with only 67mW on-resistance, allow theLTC3414 to deliver up to 4A of output current with efficiencyas high as 94%. The LTC3414 saves space by operatingwith switching frequencies as high as 4MHz, enabling theuse of tiny inductors and capacitors.
標(biāo)簽： 同步穩(wěn)壓器 元件 驅(qū)動 負載
上傳時間： 2014-01-03
上傳用戶：dongbaobao
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