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CABLE

CABLE即為有線電視電纜。CABLE網絡是基于有線電視網而組成的網絡。CABLE接入,就是基于CATV(HFC)網的網絡接入技術,它是近幾年隨著網絡應用的擴大而發展起來的,主要使用有線電視網進行數據傳輸。
  • 高集成數字RF調制器解決方案

    Abstract: A digital RF modulator, an integrated solution that satisfies stringent DOCSIS RF-performancerequirements, takes advantage of modern technologies like high-performance wideband digital-to-analogconversion and CMOS technology scaling. This application note describes the concept and advantages ofa digital quadrature amplitude modulation (QAM) modulator that uses the direct-RF architecture to enablea CABLE access platform (CCAP) system.

    標簽: 集成 數字RF 調制器 方案

    上傳時間: 2013-10-20

    上傳用戶:drink!

  • MAX9930在有線電視中的功能應用

    Abstract: The MAX9930–MAX9933 family of RF controllers and detector can be used in a wide variety of applications. Anideal application is CABLE television (CATV) over fiber, where either a RF controller or a RF detector controls the gain of atransimpedance amplifier (TIA). This application note shows how the MAX9930 (RF controller) can be used as either theRF controller or detector.

    標簽: 9930 MAX 有線電視

    上傳時間: 2013-10-11

    上傳用戶:Pzj

  • 一種改進的簡單的電纜仿真模型

    Abstract: Nonideal CABLE dispersive effects can affect system performance. This application note discusses the twomain loss effects related to CABLEs (skin-effect and dielectric losses), and presents a simple method of modeling theCABLE for use in standard SPICE simulators.

    標簽: 電纜仿真 模型

    上傳時間: 2014-11-18

    上傳用戶:wxnumen

  • 簡單的電池電路擴展以太網供電(PoE)峰值電流

      Power over Ethernet (PoE) is a new development thatallows for the delivery of power to Ethernet-based devicesvia standard Ethernet CAT5 CABLE, precluding the need forwall adapters or other external power sources. The PoEspecification defines a hardware detection protocol wherePower Sourcing Equipment (PSE) is able to identify PoEPowered Devices (PDs), thus allowing full backwardscompatibility with non-PoE-aware (legacy) Ethernetdevices.

    標簽: PoE 電池電路 擴展 以太網供電

    上傳時間: 2013-11-11

    上傳用戶:daoyue

  • 簡單、高效USB電源管理IC解決方案

      Linear Technology offers a variety of devices that simplifyconverting power from a USB CABLE, but the LTC®3455represents the highest level of functional integration yet. The LTC3455 seamlessly manages power flowbetween an AC adapter, USB CABLE and Li-ion battery,while complying with USB power standards, all from a4mm × 4mm QFN package. In addtion, two high efficiencysynchronous buck converters generate low voltage railswhich most USB-powered peripherals require. TheLTC3455 also provides power-on reset signals for themicroprocessor, a Hot SwapTM output for poweringmemory cards as well as an uncommitted gain blocksuitable for use as a low-battery comparator or an LDOcontroller. The PCB real estate required for the entire USBpower control circuit and two DC/DC converters is only225mm2.

    標簽: USB 電源管理IC 方案

    上傳時間: 2013-11-02

    上傳用戶:名爵少年

  • 使用5V電源的高分辨率視頻解決方案

      Video CABLE driver amplifi er output stages traditionallyrequire a supply voltage of at least 6V in order to providethe required output swing. This requirement is usuallymet with 5V supplies by adding a boost regulator or asmall local negative rail, say via the popular LT®1983-3.Such additional circuitry is unnecessary in typical 1VP-Pvideo connections, such as HD component video, if theCABLE driver amplifi ers simply offer near rail-to-rail outputcapability when powered from 5V.

    標簽: 5V電源 高分辨率 視頻解決 方案

    上傳時間: 2013-11-16

    上傳用戶:yanyangtian

  • 雪崩光電二極管的偏置電壓和電流檢測電路

      Avalanche photodiodes (APDs) are widely utilized in laserbased fiberoptic systems to convert optical data intoelectrical form. The APD is usually packaged with a signalconditioning amplifier in a small module. An APD receivermodule and attendant circuitry appears in Figure 1. TheAPD module (figure right) contains the APD and a transimpedance(e.g., current-to-voltage) amplifier. An opticalport permits interfacing fiberoptic CABLE to the APD’sphotosensitive portion. The module’s compact constructionfacilitates a direct, low loss connection between theAPD and the amplifier, necessary because of the extremelyhigh speed data rates involved

    標簽: 雪崩 光電二極管 偏置電壓 電流檢測電路

    上傳時間: 2013-10-25

    上傳用戶:brain kung

  • MAXX9257 MAX9258芯片可編程SerDes持續時間計算

    The MAX9257/MAX9258 programmable serializer/deserializer (SerDes) devices transfer both video data and control signals over the same twisted-pair CABLE. However, control data can only be transmitted during the vertical blank time, which is indicated by the control-channel-enabled output (CCEN) signal. The electronic control unit (ECU) firmware designer needs to know how quickly to respond to the CCEN signal before it times out and how to calculate this duration. This application note describes how to calculate the duration of the CCEN for the MAX9257/MAX9258 SerDes chipset. The calculation is based on STO timeout, clock frequency, and UART bit timing. The CCEN duration is programmable and can be closed if not in use.

    標簽: SerDes MAXX 9257 9258

    上傳時間: 2014-01-24

    上傳用戶:xingisme

  • SN65LBC170,SN75LBC170,pdf(TRIP

    The SN65LBC170 and SN75LBC170 aremonolithic integrated circuits designed forbidirectional data communication on multipointbus-transmission lines. Potential applicationsinclude serial or parallel data transmission, CABLEdperipheral buses with twin axial, ribbon, ortwisted-pair cabling. These devices are suitablefor FAST-20 SCSI and can transmit or receivedata pulses as short as 25 ns, with skew lessthan 3 ns.These devices combine three 3-state differentialline drivers and three differential input linereceivers, all of which operate from a single 5-Vpower supply.The driver differential outputs and the receiverdifferential inputs are connected internally to formthree differential input/output (I/O) bus ports thatare designed to offer minimum loading to the buswhenever the driver is disabled or VCC = 0. Theseports feature a wide common-mode voltage rangemaking the device suitable for party-lineapplications over long CABLE runs.

    標簽: 170 LBC SN TRIP

    上傳時間: 2013-10-13

    上傳用戶:ytulpx

  • FET430PIF自制資料

    The MSP-FET430PIF is a Parallel Port interface (does not include target board) that is used to program and debug MSP430 FET tools and test boards through the JTAG interface. This interface is included in our FET tools, but sold without the development board. This interface uses a Parallel PC Port to communicate to the Debugger Software (IAR Kickstart software included) running on the PC. The interface uses the standard 14 pin header to communicate to the MSP430 device using the standard JTAG protocol. The flash memory can be erased and programmed in seconds with only a few keystrokes, and since the MSP430 flash is extremely low power, no external power supply is required. The tool has an integrated software environment and connects directly to the PC which greatly simplifies the set-up and use of the tool. The flash development tool supports development with all MSP430 flash parts. Features MSP430 debugging interface to connect a MSP430-Flash-device to a Parallel port on a PC Supports JTAG debug protocol (NO support for Spy-Bi-Wire (2-wire JTAG) debug protocol, Spy-Bi-Wire (2-wire JTAG) is supported by MSP-FET430UIF) Parallel Port CABLE and a 14-conductor target CABLE Full documentation on CD ROM Integrated IAR Kickstart user interface which includes: Assembler Linker Limulator Source-level debugger Limited C-compiler Technical specifications: Backwardly compatable with existing FET tool boards.

    標簽: FET 430 PIF

    上傳時間: 2013-10-26

    上傳用戶:fengweihao158@163.com

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