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multiple-choice

  • 模拟信号链笔记

    In a world experiencing challenging transitions in multiple arenas—energy, healthcare, industry,finance, and security, to name a few—Maxim Integrated’s Industrial and Medical SolutionsGroup offers superior signal chain solutions that are innovative, accurate, and cost-effective.

    标签: 模拟 信号链

    上传时间: 2013-11-12

    上传用户:fanxiaoqie

  • RF至数字接收器的信号链噪声分析

      Designers of signal receiver systems often need to performcascaded chain analysis of system performancefrom the antenna all the way to the ADC. Noise is a criticalparameter in the chain analysis because it limits theoverall sensitivity of the receiver. An application’s noiserequirement has a signifi cant infl uence on the systemtopology, since the choice of topology strives to optimizethe overall signal-to-noise ratio, dynamic range andseveral other parameters. One problem in noise calculationsis translating between the various units used by thecomponents in the chain: namely the RF, IF/baseband,and digital (ADC) sections of the circuit.

    标签: 数字接收器 信号链 噪声分析

    上传时间: 2014-12-04

    上传用户:cylnpy

  • DN426 6通道工业监控应用的SAR ADC

      The 14-bit LTC2351-14 is a 1.5Msps, low power SARADC with six simultaneously sampled differential inputchannels. It operates from a single 3V supply and featuressix independent sample-and-hold amplifi ers and a singleADC. The single ADC with multiple S/HAs enables excellentrange match (1mV) between channels and channel-tochannelskew (200ps).

    标签: 426 ADC SAR DN

    上传时间: 2014-12-23

    上传用户:天诚24

  • 凌力尔特电池管理解决方案

    Linear Technology’s high performance battery management ICsenable long battery life and run time, while providing precision charging control, constantstatus monitoring and stringent battery protection. Our proprietary design techniques seamlesslymanage multiple input sources while providing small solution footprints, faster charging and100% standalone operation. Battery and circuit protection features enable improved thermalperformance and high reliability operation.

    标签: 凌力尔特 电池管理 方案

    上传时间: 2013-10-12

    上传用户:yyq123456789

  • G3-PLC技术使电动汽车智能化充电

    Abstract: This article explores criteria necessary for reliable communication between electric vehicles (EVs) and electric vehicleservice equipment (EVSE). Data will demonstrate that a G3-PLC system has already met the criteria established by the automotiveand utility industries. Multiple international tests prove that a G3-PLC implementation is the optimal low-frequency solution.

    标签: PLC 电动汽车 智能化 充电

    上传时间: 2014-12-24

    上传用户:逗逗666

  • XAPP946-适用于Virtex-4 RocketIO MGT的开关电源

      This document presents design techniques and reference circuits that power Virtex™-4 FXRocketIO™ multi-gigabit transceivers (MGTs) operating at data rates below 3.125 Gb/s.When using multiple transceivers, it is sometimes preferred to power them from a switchingpower supply. However, switching power supplies generate noise that affects transceiver

    标签: RocketIO Virtex XAPP 946

    上传时间: 2013-11-18

    上传用户:huang111

  • 双智能电池充电器简化服务器的备用电池

      Smart Batteries are an increasingly popular choice formore than just traditional compact consumer electronicdevices. For example, Smart Batteries are being used asbattery backup for products such as blade servers, whereknowing battery status is very important

    标签: 智能电池 充电器 备用电池 服务器

    上传时间: 2013-11-02

    上传用户:wangzhen1990

  • 100-15V TO 12V DCDC 原理图 PCB BOM表

    高的工作电压高达100V N双N沟道MOSFET同步驱动 The D810DCDC is a synchronous step-down switching regulator controller that can directly step-down voltages from up to 100V, making it ideal for telecom and automotive applications. The D810DCDC uses a constant on-time valley current control architecture to deliver very low duty cycles with accurate cycle-by-cycle current limit, without requiring a sense resistor. A precise internal reference provides 0.5% DC accuracy. A high bandwidth (25MHz) error amplifi er provides very fast line and load transient response. Large 1Ω gate drivers allow the D810DCDC to drive multiple MOSFETs for higher current applications. The operating frequency is selected by an external resistor and is compensated for variations in VIN and can also be synchronized to an external clock for switching-noise sensitive applications. Integrated bias control generates gate drive power from the input supply during start-up and when an output shortcircuit occurs, with the addition of a small external SOT23 MOSFET. When in regulation, power is derived from the output for higher effi ciency.

    标签: DCDC 100 12V BOM

    上传时间: 2013-10-23

    上传用户:wd450412225

  • 利用纤巧型负载点电路来简化电源电压的跟踪和排序

      Multiple-voltage electronics systems often requirecomplex supply voltage tracking or sequencing, whichif not met, can result in system faults or even permanentfailures in the fi eld. The design diffi culties in meetingthese requirements are often compounded in distributedpowerarchitectures where point-of-load (POL) DC/DCconverters or linear regulators are scattered across PCboard space, sometimes on different board planes. Theproblem is that power supply circuitry is often the lastcircuitry to be designed into the board, and it must beshoehorned into whatever little board real estate is left.Often, a simple, drop-in, fl exible solution is needed tomeet these requirements.

    标签: 负载点电路 电源电压 排序

    上传时间: 2013-10-07

    上传用户:15071087253

  • DN384 精确的电源排序,防止系统损坏

      Many complex systems—such as telecom equipment,memory modules, optical systems, networking equipment,servers and base stations—use FPGAs and otherdigital ICs that require multiple voltage rails that muststart up and shut down in a specific order, otherwise theICs can be damaged. The LTC®2924 is a simple andcompact solution to power supply sequencing in a 16-pinSSOP package (see Figures 1 and 2).

    标签: 384 DN 电源排序 防止

    上传时间: 2013-10-28

    上传用户:tonyshao