字数:9804.页数23
摘要
简要介绍中频收发器芯片MAX2511的功能，内部结构，引脚功能及典型的应用电路。MAX2511是一个完整的，综合性高的中频收发器。也可以作为单一信号转换机。只要由一个图像混频器，一个放大器，一个压控振荡器，一个输出驱动和一个过滤器组成。在PWT1900，PACS，PHS，DECT及其他PCS无线手机与基站及无线数据链接中被广泛的运用。
关键字： 限幅放大器 中频放大器 混频收发器 下边频放大器
Abstract
It briefly introduced quadrature demodulator with an integrated intermediate frequency(IF) MAX2511 with the microcontroller function,internal structure,pin array and typical apply circuit. The MAX2511 is a complete, highly integrated IF for applications employing a dual –conversionar -chitecture. Alternatively, the MAX2511 can be usedas a single conversionntransceiver if the RF operatingfrequency ranges from 200MHz to 440MHz.The max2511 is consist of a image-reject
Mixer,a amplifier,a voc,a output-driver and a IF filter. The MAX2511 is widely used in PWT1900 PACS, PHS, DECT and Other PCS, Wireless Handsets and Base Stations and Wireless Data Links
KEY WORD: limiting amplifier IF mixer
image-reject mixer downconverter
目 录
1．MAX2511 芯片简介..................................................................5
1.1 MAX2511芯片简介.................................................................5
1.2 MAX2511芯片应用.................................................................5
1.3 MAX2511芯片特征............................................................5
2．MAX2511芯片封装与引脚结构 ........................................................5
2.1 MAX2511引脚结构 .................................................................5
2.2 MAX2511直流电子特性..............................................................7
2.3 MAX2511 交流电子特性 ............................................................7
2.4 典型的操作特性 .................................................................10
2.5 MAX2511 引脚功能 ...............................................................13
3. MAX2511 内部结构与工作原理 ......................................................15
3.1 接收器 ........................................................................15
3.2 图象抑制混频器.................................................................16
3.3 限幅器 ........................................................................16
3.4 带有限幅放大器和接受信号强度指示 ..............................................16
3.5 传输器 ........................................................................16
3.6 本地晶体振荡器和缓冲器 .......................................................17
3.7 电源管理控制...................................................................18
3.8 应用信息 .....................................................................18
3.9 晶体振荡器.....................................................................18
3.10 输入阻抗匹配 .................................................................19
3.11 过滤器 ........................................................................20
3.12 接收中频过滤器.................................................................21
3.13 供应电源设计...................................................................21
3.14 网络匹配设计...................................................................21
3.15 振荡器设计.....................................................................22
4．典型应用电路..................................................................22
5. 总结 .........................................................................23
6．参考文献 .......................................................................23
基于MAX2511的芯片简介及应用电路设计......