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low-Level

  • EPC Low level Reader Protocol

    EPC 낮은 수준의 리더 프로토콜

    标签: EPC RFID

    上传时间: 2015-06-04

    上传用户:gw0214

  • Matlab 画三维立体图形

    Matlab 画三维立体图形 The aim of geom3d library is to handle and visualize 3D geometric primitives such as points, lines, planes, polyhedra... It provides low-Level functions for manipulating 3D geometric primitives, making easier the development of more complex geometric algorithms.      Some features of the library are:   - creation of various shapes (3D points, 3D lines, planes, polyhedra...)     through an intuitive syntax.      Ex: createPlane(p1, p2, p3) to create a plane through 3 points.     - derivation of new shapes: intersection between 2 planes, intersection between     a plane and a line, between a sphere and a line...   - functions for 3D polygons and polyhedra. Polyhedra use classical vertex-faces     arrays (face array contain indices of vertices), and support faces with any     number of vertices. Some basic models are provided (createOctaedron,     createCubeoctaedron...), as well as some computation (like faceNormal or     centroid)      - manipulation of planar transformation. Ex.:     ROT = createRotationOx(THETA);     P2  = transformPoint3d(P1, ROT);     - direct drawing of shapes with specialized functions. Clipping is performed      automatically for infinite shapes such as lines or rays. Ex:     drawPoint3d([50 50 25; 20 70 10], 'ro');    % draw some points     drawLine3d([X0 Y0 Z0 DX DY DZ]);            % clip and draw straight line Some functions require the geom2d package.       Additional help is provided in geom3d/Contents.m file, as well as summary files     like 'points3d.m' or 'lines3d.m'.

    标签: Matlab 画三维立体图形

    上传时间: 2015-11-02

    上传用户:A1321

  • a java e book for a new guy to learn and teach u from low to high level

    a java e book for a new guy to learn and teach u from low to high level

    标签: learn level teach java

    上传时间: 2013-11-30

    上传用户:fnhhs

  • PCA9517 Level translating I2C-

    The PCA9517 is a CMOS integrated circuit that provides level shifting between lowvoltage (down to 0.9 V) and higher voltage (2.7 V to 5.5 V) I2C-bus or SMBus applications.While retaining all the operating modes and features of the I2C-bus system during thelevel shifts, it also permits extension of the I2C-bus by providing bidirectional buffering forboth the data (SDA) and the clock (SCL) lines, thus enabling two buses of 400 pF. Usingthe PCA9517 enables the system designer to isolate two halves of a bus for both voltageand capacitance. The SDA and SCL pins are over voltage tolerant and arehigh-impedance when the PCA9517 is unpowered.

    标签: translating Level 9517 PCA

    上传时间: 2013-12-25

    上传用户:wsf950131

  • PCA9519 4channel level transla

    The PCA9519 is a 4-channel level translating I2C-bus/SMBus repeater that enables theprocessor low voltage 2-wire serial bus to interface with standard I2C-bus or SMBus I/O.While retaining all the operating modes and features of the I2C-bus system during thelevel shifts, it also permits extension of the I2C-bus by providing bidirectional buffering forboth the data (SDA) and the clock (SCL) lines, thus enabling the I2C-bus or SMBusmaximum capacitance of 400 pF on the higher voltage side. The SDA and SCL pins areover-voltage tolerant and are high-impedance when the PCA9519 is unpowered.

    标签: 4channel transla level 9519

    上传时间: 2013-11-19

    上传用户:jisiwole

  • The P89LPC938 is a single-chip microcontroller, available in low cost packages, based on a high per

    The P89LPC938 is a single-chip microcontroller, available in low cost packages, based on a high performance processor architecture that executes instructions in two to four clocks, six times the rate of standard 80C51 devices. Many system-level functions have been incorporated into the P89LPC938 in order to reduce component count, board space, and system cost.

    标签: microcontroller single-chip available packages

    上传时间: 2013-12-04

    上传用户:远远ssad

  • MAX2691 L2 Band GPS Low-Noise Amplifier

      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.

    标签: Amplifier Low-Noise 2691 Band

    上传时间: 2014-12-04

    上传用户:zaocan888

  • 射频集成电路设计John Rogers(Radio Freq

    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.

    标签: Rogers Radio John Freq

    上传时间: 2014-12-23

    上传用户:han_zh

  • 电平转换控制功率MOSFET

    Abstract: Some power architectures require the power supply sequencer (or system manager) to controldownstream power MOSFETs to allow power to flow into branch circuits. This application note explains howsystem power sequencing and level shifting can be accomplished using a low-voltage system manager

    标签: MOSFET 电平转换 控制 功率

    上传时间: 2013-11-02

    上传用户:wys0120

  • 简单、高效USB电源管理IC解决方案

      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.

    标签: USB 电源管理IC 方案

    上传时间: 2013-11-02

    上传用户:名爵少年