基于ADF4360-3电路芯片简介及应用电路设计

字数:5850,页数:18

摘要           
 简要介绍ADF4360-3大规模射频集成电路芯片的功能、内部结构、引脚排列及典型的应用电路。ADF4360-3 是一部充分地联合整数N 合成器和电压控制振荡器(VCO) 。 ADF4360-3 被设计为1750 兆赫中心频率。 另外, 有a 划分由2 选择可利用, 藉以用户得到在800 兆赫和975 兆赫之间RF 产品。所有在芯片记数器控制是通过一个简单的3-wire 接口。 设备工作电源范围从3.0 V 对3.6 V, 并且在不使用的时刻电压会自动降低.
关键字：直接转换调制器  N 逆门闩
       输入移位寄存器   锁上结构  VCO

Abstract
   The ADF4360-3 is a fully integrated integer-N synthesizer and voltage controlled oscillator (VCO). The ADF4360-3 is designed for a center frequency of 1750 MHz. In addition, there is a divide-by-2 option available, whereby the user gets an RF out-put of between 800 MHz and 975 MHz.
Control of all the on-chip registers is through a simple 3-wire interface. The device operates with a power supply ranging from 3.0 V to 3.6 V and can be powered down when not in use.
Key word: Direct Conversion Modulator   N Counter Latch
           Input Shift Register           Latch Structure    VCO

目 录    
1.ADF4360-3芯片简介...................................................................4
2.ADF4360-3芯片封装与引脚功能.........................................................5
3. ADF4360-3内部结构与工作原理  ......................................................8
   3．1  基准信号输入电路.............................................................9
3．2前置分频器........................................................................9
3．3  A和B计数器......................................................................9
3．4  R计数器........................................................................10
3．5  相位频率检波器(PFD)和充电泵....................................................10
3．6  多路复用器输出和锁定检测.......................................................11
3．7  锁相检波.......................................................................11
3．8  输入移位寄存器.................................................................13
3．9  VCO ...........................................................................14
3．10输出部分........................................................................14
4. ADF4360-3应用电路设计.............................................................15
4．1直接转换调幅器...................................................................15
4．2  固定频率锁存器.................................................................16
    4．3  与AduC812的接口电路........................................................17
4．4与ADSP-2181的接口电路............................................................18
5. 总结..............................................................................18
参考文献.............................................................................18