The voltage range of Linear Technology’s PowerPath® circuitscan be easily extended with just a few components, thusallowing them to meet the needs of virtually all applications.This application note presents solutions for circuits thatmust withstand large negative voltages, a reverse adapterinput for example, and circuits that must withstand largepositive inputs, such as automotive load-dump.
上傳時間： 2013-10-21
上傳用戶：幾何公差
Notebook and palmtop systems need a multiplicity ofregulated voltages developed from a single battery. Smallsize, light weight, and high efficiency are mandatory forcompetitive solutions in this area. Small increases inefficiency extend battery life, making the final productmuch more usable with no increase in weight. Additionally,high efficiency minimizes the heat sinks needed onthe power regulating components, further reducing systemweight and size.
上傳時間： 2013-11-11
上傳用戶：大三三
Sensing and/or controlling current flow is a fundamental requirement in many electronics systems, and the tech-niques to do so are as diverse as the applications them-selves. This Application Note compiles solutions to cur-rent sensing problems and organizes the solutions by general application type. These circuits have been culled from a variety of Linear Technology documents
標簽： 電流檢測電路
上傳時間： 2013-10-22
上傳用戶：moshushi0009
Microchip 公司是 The Embedded Control solutions Company® （嵌入式控制系統解決方案公 司） ，其產品主要滿足嵌入式控制市場的需求。我們是以下產品的領先供應商： • 8 位通用單片機(PICmicro® 單片機) • 專用和標準的非易失性存儲器件 • 安防器件 (KEELOQ®) • 專用標準產品 欲獲得您所感興趣的產品列表，請申請一份Microchip產品線目錄。該文獻可從各地的Microchip 銷售辦事處獲得，或者直接從Microchip的網站上下載。 以往，8位單片機的用戶只選擇傳統的MCU類型，即ROM器件，用于生產。Microchip率先改變 了這種傳統觀念，向人們展示了 OTP（一次性編程）器件比 ROM 器件在其壽命周期內具有更低 的產品成本。 Microchip具備EPROM技術優勢， 從而使EPROM成為PICmicro 單片機程序存儲器的不二選擇。 Microchip 盡可能地縮小了EPROM 和ROM 存儲器技術之間的成本差距，并使顧客從中受益。其 他MCU供應商無法作到這一點，這從他們的 EPROM 和 ROM 版本之間的價格差異便可以看出。 Microchip的8位單片機市場份額的增長證明了PICmicro® 單片機能夠滿足大多數人的需要。 這也 使 PICmicro 單片機架構成為了當今通用市場上應用最廣泛的三大體系之一。Microchip 的低成本 OTP解決方案所帶來的效益是這一增長的助推劑。用戶能夠從以下各方面受益： • 快速的產品上市時間 • 允許生產過程中對產品進行代碼修改 • 無需掩膜產品所需的一次性工程費用(NRE) • 能夠輕松為產品進行連續編號 • 無需額外增加硬件即可存儲校準數據 • 可最大限度地增加PICmicro® 單片機的庫存 • 由于在開發和生產中使用同一器件，從而降低了風險 Microchip 的 8 位 PICmicro單片機具備很好的性價比，可成為任何傳統的 8 位應用和某些 4 位應 用(低檔系列)、專用邏輯的替代品以及低端DSP應用(高檔系列)的選擇。這些特點及其良好的 性價比使PICmicro單片機在大多數應用場合極具吸引力。
上傳時間： 2013-10-30
上傳用戶：Zero_Zero
為解決傳統可視倒車雷達視頻字符疊加器結構復雜，可靠性差，成本高昂等問題，在可視倒車雷達設計中采用視頻字符發生器芯片MAX7456。該芯片集成了所有用于產生用戶定義OSD，并將其插入視頻信號中所需的全部功能，僅需少量的外圍阻容元件即可正常工作。給出了以MAX7456為核心的可視倒車雷達的軟、硬件實現方案及設計實例。該方案具有電路結構簡單、價格低廉、符合人體視覺習慣的特點。經實際裝車測試，按該方案設計的可視倒車雷達視場清晰、提示字符醒目、工作可靠，可有效降低駕駛員倒車時的工作強度、減少倒車事故的發生。 Abstract: A new video and text generation chip，MAX7456，was used in the design of video parking sensor in order to simplify system structure，improve reliability and reduce cost. This chip included all the necessary functions to generate user-defined OSDs and to add them into the video signals. It could be put into work with addition of just a small number of resistances and capacitors. This paper provided software and hardware implementation solutions and design example based on the chip. The system had the characteristics of simplicity in circuit structure，lower cost，and comfort for the nature of human vision. Loading road test demonstrates high video and text display quality and reliable performance，which makes the driver easy to see backward and reduces chance of accidents.
上傳時間： 2013-12-10
上傳用戶：qiaoyue
PICmicro中檔單片機系列參考手冊:Microchip 公司是The Embedded Control solutions Company® （嵌入式控制系統解決方案公司），其產品主要滿足嵌入式控制市場的需求。我們是以下產品的領先供應商：• 8 位通用單片機(PICmicro® 單片機)• 專用和標準的非易失性存儲器件• 安防器件 (KEELOQ®)• 專用標準產品
上傳時間： 2013-10-30
上傳用戶：lizhizheng88
PICmicro中檔單片機系列參考手冊:請注意以下有關Microchip 器件代碼保護功能的要點：• Microchip的產品均達到Microchip 數據手冊中所述的技術指標。• Microchip確信：在正常使用的情況下， Microchip 系列產品是當今市場上同類產品中最安全的產品之一。• 目前，仍存在著惡意、甚至是非法破壞代碼保護功能的行為。就我們所知，所有這些行為都不是以Microchip 數據手冊中規定的操作規范來使用Microchip 產品的。這樣做的人極可能侵犯了知識產權。• Microchip愿與那些注重代碼完整性的客戶合作。• Microchip或任何其它半導體廠商均無法保證其代碼的安全性。代碼保護并不意味著我們保證產品是“牢不可破”的。代碼保護功能處于持續發展中。Microchip 承諾將不斷改進產品的代碼保護功能。任何試圖破壞Microchip 代碼保護功能的行為均可視為違反了《數字器件千年版權法案（Digital Millennium Copyright Act）》。如果這種行為導致他人在未經授權的情況下，能訪問您的軟件或其它受版權保護的成果，您有權依據該法案提起訴訟，從而制止這種行為的。 Microchip 公司是The Embedded Control solutions Company® （嵌入式控制系統解決方案公司），其產品主要滿足嵌入式控制市場的需求。我們是以下產品的領先供應商：• 8 位通用單片機(PICmicro® 單片機)• 專用和標準的非易失性存儲器件• 安防器件 (KEELOQ®)• 專用標準產品欲獲得您所感興趣的產品列表，請申請一份Microchip 產品線目錄。以往，8 位單片機的用戶只選擇傳統的MCU 類型，即ROM 器件，用于生產。Microchip 率先改變了這種傳統觀念，向人們展示了OTP （一次性編程）器件比ROM 器件在其壽命周期內具有更低的產品成本。Microchip 具備EPROM技術優勢，從而使EPROM成為PICmicro 單片機程序存儲器的不二選擇。Microchip 盡可能地縮小了EPROM 和ROM 存儲器技術之間的成本差距，并使顧客從中受益。其他MCU 供應商無法作到這一點，這從他們的 EPROM 和 ROM 版本之間的價格差異便可以看出。Microchip 的8 位單片機市場份額的增長證明了PICmicro® 單片機能夠滿足大多數人的需要。這也使PICmicro 單片機架構成為了當今通用市場上應用最廣泛的三大體系之一。Microchip 的低成本OTP 解決方案所帶來的效益是這一增長的助推劑。用戶能夠從以下各方面受益：• 快速的產品上市時間• 允許生產過程中對產品進行代碼修改• 無需掩膜產品所需的一次性工程費用(NRE)• 能夠輕松為產品進行連續編號• 無需額外增加硬件即可存儲校準數據• 可最大限度地增加PICmicro® 單片機的庫存• 由于在開發和生產中使用同一器件，從而降低了風險Microchip 的8 位 PICmicro 單片機具備很好的性價比，可成為任何傳統的8 位應用和某些4 位應用( 低檔系列)、專用邏輯的替代品以及低端DSP 應用( 高檔系列) 的選擇。這些特點及其良好的性價比使PICmicro 單片機在大多數應用場合極具吸引力。
上傳時間： 2014-03-03
上傳用戶：ainimao
中文版詳情瀏覽：http://www.elecfans.com/emb/fpga/20130715324029.html Xilinx UltraScale:The Next-Generation Architecture for Your Next-Generation Architecture The Xilinx® UltraScale™ architecture delivers unprecedented levels of integration and capability with ASIC-class system- level performance for the most demanding applications. The UltraScale architecture is the industr y's f irst application of leading-edge ASIC architectural enhancements in an All Programmable architecture that scales from 20 nm planar through 16 nm FinFET technologies and beyond, in addition to scaling from monolithic through 3D ICs. Through analytical co-optimization with the X ilinx V ivado® Design Suite, the UltraScale architecture provides massive routing capacity while intelligently resolving typical bottlenecks in ways never before possible. This design synergy achieves greater than 90% utilization with no performance degradation. Some of the UltraScale architecture breakthroughs include: • Strategic placement (virtually anywhere on the die) of ASIC-like system clocks, reducing clock skew by up to 50% • Latency-producing pipelining is virtually unnecessary in systems with massively parallel bus architecture, increasing system speed and capability • Potential timing-closure problems and interconnect bottlenecks are eliminated, even in systems requiring 90% or more resource utilization • 3D IC integration makes it possible to build larger devices one process generation ahead of the current industr y standard • Greatly increased system performance, including multi-gigabit serial transceivers, I/O, and memor y bandwidth is available within even smaller system power budgets • Greatly enhanced DSP and packet handling The Xilinx UltraScale architecture opens up whole new dimensions for designers of ultra-high-capacity solutions.
標簽： UltraScale Xilinx 架構
上傳時間： 2013-11-13
上傳用戶：瓦力瓦力hong
Introduction to Xilinx Packaging Electronic packages are interconnectable housings for semiconductor devices. The major functions of the electronic packages are to provide electrical interconnections between the IC and the board and to efficiently remove heat generated by the device. Feature sizes are constantly shrinking, resulting in increased number of transistors being packed into the device. Today's submicron technology is also enabling large-scale functional integration and system-on-a-chip solutions. In order to keep pace with these new advancements in silicon technologies, semiconductor packages have also evolved to provide improved device functionality and performance. Feature size at the device level is driving package feature sizes down to the design rules of the early transistors. To meet these demands, electronic packages must be flexible to address high pin counts, reduced pitch and form factor requirements. At the same time,packages must be reliable and cost effective.
上傳時間： 2013-10-22
上傳用戶：ztj182002
Designing withProgrammable Logicin an Analog WorldProgrammable logic devicesrevolutionized digital design over 25years ago, promising designers a blankchip to design literally any functionand program it in the field. PLDs canbe low-logic density devices that usenonvolatile sea-of-gates cells calledcomplex programmable logic devices(CPLDs) or they can be high-densitydevices based on SRAM look-up tables
標簽： solutions Analog Xilinx FPGAs
上傳時間： 2013-11-01
上傳用戶：a67818601
