搜索：NO - 虫虫下载站

学术论文  FPGA技术的微弱GPS信号实时处理

普通GPS接收机在特殊环境下，如在高楼林立的城市中心，林木遮挡的森林公路，特别是在隧道和室内环境的情况下，由于卫星信号非常微弱，载噪比（Carrier Noise Ratio，C/No）通常都在34dB-Hz以下，很难有效捕获到卫星信号，导致无法正常定位。恶劣条件下的定位有广阔的发展和应用前景，特别是在交通事故、火灾和地震等极端环 ...

https://www.eeworm.com/dl/514/13089.html

下载: 121

查看: 1053

经验分享  QFN SMT工艺设计指导

QFN SMT工艺设计指导.pdf 一、基本介绍 QFN（Quad　Flat　No　Lead）是一种相对比较新的IC封装形式，但由于其独特的优势，其应用得到了快速的增长。QFN是一种无引脚封装，它有利于降低引脚间的自感应系数，在高频领域的应用优势明显。QFN外观呈正方形或矩形，大小接近于CSP，所以很薄很轻。元件底部具有与底面水平的焊端， ...

https://www.eeworm.com/dl/508/13211.html

下载: 147

查看: 1089

FEATURES Unique 1-Wire interface requires only one port pin for communication Multidrop capability simplifies distributed temperature sensing applications Requires no external components Can be powered from data line. Power supply range is 3.0V to 5.5V Zero standby power required Measur ...

https://www.eeworm.com/dl/541/13760.html

下载: 160

查看: 1119

教程资料  如何利用CPLD与单片机实现并行I／O接口的扩展

]本文介绍了如何利用CPLD(复杂可编程逻辑器件)与单片机的结合实现并行I／\r\nO(输入／输出)接口的扩展。该设计与用8255做并行I／O接口相比，与单片机软件完全兼容，\r\n同时拥有速度快，功耗低，价格便宜，使用灵活等特点

https://www.eeworm.com/dl/Protel/doc/17876.html

下载: 172

查看: 1048

模拟电子  双绞线和低通滤波器降低EMI_RFI

Abstract: Alexander Graham Bell patented twisted pair wires in 1881. We still use them today because they work so well. In addition we have the advantage ofincredible computer power within our world. Circuit simulators and filter design programs are available for little or no cost. We combine the ...

https://www.eeworm.com/dl/571/20986.html

下载: 93

查看: 1040

模拟电子  COOLMOS全面认识

Recently a new technology for high voltage Power MOSFETshas been introduced &ndash; the CoolMOS&trade; . Based on thenew device concept of charge compensation the RDS(on) areaproduct for e.g. 600V transistors has been reduced by afactor of 5. The devices show no bipolar current contributionlike th ...

https://www.eeworm.com/dl/571/20990.html

下载: 53

查看: 1035

模拟电子  数字集成电路设计Digital Integrated Circuit Design

&nbsp; This unique guide to designing digital VLSI circuits takes a top-down approach, reflecting the natureof the design process in industry. Starting with architecture design, the book explains the why andhow of digital design, using the physics that designers need to know, and no more.Coverin ...

https://www.eeworm.com/dl/571/21305.html

下载: 33

查看: 1033

模拟电子  高速放大器技术

  This publication represents the largest LTC commitmentto an application note to date. No other application noteabsorbed as much effort, took so long or cost so much.This level of activity is justified by our belief that high speedmonolithic amplifiers greatly interest users.

https://www.eeworm.com/dl/571/21342.html

下载: 102

查看: 1043

模拟电子  Delta Sigma的ADC桥测量技术

&nbsp; Sensors for pressure, load, temperature, acceleration andmany other physical quantities often take the form of aWheatstone bridge. These sensors can be extremely linearand stable over time and temperature. However, mostthings in nature are only linear if you don&rsquo;t bend them toomuch. ...

https://www.eeworm.com/dl/571/21360.html

下载: 80

查看: 1032

模拟电子  水声信号功率放大器的设计与实现

设计了水声信号发生系统中的功率放大电路，可将前级电路产生的方波信号转换为正弦信号，同时进行滤波、功率放大，使其满足换能器对输入信号的要求。该电路以单片机AT89C52，集成6阶巴特沃思低通滤波芯片MF6以及大功率运算放大器LM12为核心，通过标准RS232接口与PC进行通信，实现信号增益的程控调节，对干扰信号具有良好的抑 ...

https://www.eeworm.com/dl/571/21375.html

下载: 97

查看: 1097

搜索结果

按分类筛选