the practice of proteus and avr
上傳時間： 2013-09-29
上傳用戶：tom_man2008
Abstract: IC switches and multiplexers are proliferating, thanks to near-continual progress in lowering the supply voltage,incorporating fault-protected inputs, clamping the output voltage, and reducing the switch resistances. The latest of these advancesis the inclusion of precision resistors to allow two-point calibration of gain and offset in precision data-acquisition systems.
上傳時間： 2013-11-12
上傳用戶：acwme
The MAX2691 low-noise amplifier (LNA) is designed forGPS L2 applications. Designed in Maxim’s advancedSiGe process, the device achieves high gain andlow noise figure while maximizing the input-referred 1dBcompression point and the 3rd-order intercept point. TheMAX2691 provides a high gain of 17.5dB and sub 1dBnoise figure.
標簽： Amplifier Low-Noise 2691 Band
上傳時間： 2014-12-04
上傳用戶：zaocan888
Construction Strategy of ESD Protection CircuitAbstract： The principles used to construct ESD protection on circuits and the basic conceptions of ESD protection design are presented.Key words：ESD protection/On circuit, ESD design window, ESD current path1 引言靜電放電（ESD，Electrostatic Discharge）給電子器件環境會帶來破壞性的后果。它是造成集成電路失效的主要原因之一。隨著集成電路工藝不斷發展，互補金屬氧化物半導體（CMOS，Complementary Metal-Oxide Semiconductor）的特征尺寸不斷縮小，金屬氧化物半導體(MOS, Metal-Oxide Semiconductor)的柵氧厚度越來越薄，MOS 管能承受的電流和電壓也越來越小，因此要進一步優化電路的抗ESD 性能，需要從全芯片ESD 保護結構的設計來進行考慮。
標簽： Construction Strategy ESD of
上傳時間： 2013-11-09
上傳用戶：Aidane
模擬集成電路的設計與其說是一門技術，還不如說是一門藝術。它比數字集成電路設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，而設計者的實踐經驗無疑是誕生豐富直覺的源泉。這也正足初學者對學習模擬集成電路設計感到困惑并難以駕馭的根本原因。.美國加州大學洛杉機分校(UCLA)Razavi教授憑借著他在美國多所著名大學執教多年的豐富教學經驗和在世界知名頂級公司(AT&T，Bell Lab，HP)卓著的研究經歷為我們提供了這本優秀的教材。本書自2000午出版以來得到了國內外讀者的好評和青睞，被許多國際知名大學選為教科書。同時，由于原著者在世界知名頂級公司的豐富研究經歷，使本書也非常適合作為CMOS模擬集成電路設計或相關領域的研究人員和工程技術人員的參考書。... 本書介紹模擬CMOS集成電路的分析與設計。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中模擬電路設計遇到的新問題及電路技術的新發展。本書由淺入深，理論與實際結合，提供了大量現代工業中的設計實例。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和噪聲。第11章至第13章介紹帶隙基準、開關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。第16章至18章介紹MOS器件的高階效應及其模型、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
上傳時間： 2014-12-23
上傳用戶：杜瑩12345
2400W-SPWM驅動電路，Backup of 修改2400W-SPWM驅動電路。
上傳時間： 2013-11-14
上傳用戶：dddddd
Advances in low power electronics now allow placementof battery-powered sensors and other devices in locationsfar from the power grid. Ideally, for true grid independence,the batteries should not need replacement, but instead berecharged using locally available renewable energy, suchas solar power. This Design Note shows how to producea compact battery charger that operates from a small2-cell solar panel. A unique feature of this design is thatthe DC/DC converter uses power point control to extractmaximum power from the solar panel.
上傳時間： 2014-01-20
上傳用戶：wettetw
為解決直流逆變交流的問題，有效地利用能源，讓電源輸出最大功率，設計了高性能的基于IR2101最大功率跟蹤逆變器，并以SPMC75F2413A單片機作為主控制器。高電壓、高速功率的MOSFET或IGBT驅動器IR2101采用高度集成的電平轉換技術，同時上管采用外部自舉電容上電，能夠穩定高效地驅動MOS管。該逆變器可以實現DC/AC的轉換，最大功率點的跟蹤等功能。實際測試結果表明，該逆變器系統具有跟蹤能力強，穩定性高，反應靈敏等特點，該逆變器不僅可應用于普通的電源逆變系統，而且可應用于光伏并網發電的逆變系統，具有廣泛的市場前景。 Abstract: To solve the problem of DC-AC inverter， and to utilize solar energy more efficiently， the design of maximum power point tracking inverter based on IR2101 was achieved with a high-performance， which can make the system output power maximum. SPMC75F2413A was adopted as main controller. IR2101 is a high voltage， high speed power MOSFET and IGBT driver. It adopted highly integrated voltage level transforming technology， and an external bootstrap capacitor was used， which could drive MOS tube efficiently and stably. Many functions are achieved in the system， such as DC/AC conversion， maximun power point tracking， etc. The actual test result shows that the inverter system has characteristics of strong tracking ability， high stability and reacting quickly. The design can not only be used in ordinary power inverter system， but also be used in photovoltaic power inverter system. The design has certain marketing prospects
上傳時間： 2013-11-17
上傳用戶：lliuhhui
為了使音頻信號分析儀小巧可靠，成本低廉，設計了以2片MSP430F1611單片機為核心的系統。該系統將音頻信號送入八階巴特沃茲低通濾波器，對信號進行限幅放大、衰減、電平位移、緩沖，并利用一單片機負責對前級處理后的模擬信號進行采樣，將采集得到的音頻信號進行4 096點基2的FFT計算，并對信號加窗函數提高分辨率，另一單片機負責對信號的分析及控制顯示設備。此設計精確的測量了音頻信號的功率譜、周期性、失真度指標，達到較高的頻率分辨率，并能將測量結果通過紅外遙控器顯示在液晶屏上。 Abstract: o make the audio signal analyzer cheaper， smaller and more reliable， this system sends the audio signal to the eight-order butterworth filter， and then amplifies， attenuates， buffers it in a limiting range， transfers the voltage level of the signal before utilizing two MSP430F1611 MCU to realize the audio analysis. One is charged for sampling and dealing with the processed audio signal collected by the 4096 point radix-2 FFT calculation and imposes the window function to improve the frequency resolution. The other one controls the display and realizes the spectrum， periodicity， power distortion analysis in high resolution which is displayed in the LCD screen through the infrared remote control.
上傳時間： 2013-12-11
上傳用戶：jasonheung
為提高溫度測量效率，降低系統的成本，擴展傳輸距離，設計出一種新型溫度采集系統。單片機通過控制具有單總線方式的溫度傳感器DS18B20實現對溫度的測量，同時單片機通過控制具有單總線方式300～450MHz頻率范圍內的MAX7044與MAX7033無線發射與接收芯片實現溫度數據的無線傳輸。與傳統溫度采集系統相比，該系統利用單總線方式連接，采用無線傳輸方式實現遠距離通信，易于系統的集成與擴展。實驗結果表明，該系統結構簡單、方便移植，能夠同時實現多達上百點溫度的測量與500m范圍的傳輸。 Abstract: To improve the temperature measurement efficiency and reduce system cost,expansion of transmission distance,a new type of temperature acquisition system is designed.Microcontroller controlled temperature sensor DS18B20which has a single-bus achieves temperature measurement,while microcontroller by controlled the MAX7044and MAX7033chip with a single-bus and having300~450MHz radiofrequency to achieve the wireless transmission of temperature data.Compared with conventional temperature acquisition system,the system uses single-bus connected,and uses wireless transmission means to achieve long-distance communications,easy-to-system integration and expansion.The experimental results show that the system is simple,convenient transplantation,and can be implemented in as many as a hundred-point temperature measure-ment and the transmission range of500meters.
上傳時間： 2013-10-29
上傳用戶：515414293
