(页数:18字数:3139)摘要： 简要介绍CXA3556N的功能、内部结构、引脚排列及典型的应用电路。CXA3556N是一个单芯片集成电路,它由自动增益控制电路,混频电路,本地振荡电路和输出放大电路组成,能处理数字广播调谐器产生的中频信号,它的表面管脚采用可实用的24-pin SSOP的封装形式.
关键字:自动增益控制 混频 本地振荡 输出放大
Abstract
It briefly introduced the CXA3556N function, internal structure, pin array and typical apply circuit. The CXA3556N is one-chip integrated IC that processes IF signals of a digital broacast tuner and includes an AGC amplifier circuit ,a mixer circuit,local oscilator circuit and an output amplifier circuit.The package utilizes a 24-pin SSOP suitable for surface mounting.
Key word: AGC amplitier mixer
local oscilator output amplifier
1.CXA3556N芯片简介---------------------------------------------4
2.CXA3556N封装外观----------------------------------------------5
3.CXA3556的方框图和引脚布局-----------------------------------------------------------------6
4. CXA3556N的引脚描述和等效电路------------------------------------------------------------7
5 电气特性---------------------------------------------------------------------------------------------9
5.1 下变频器模式------------------------------------------------------------------------------9
5.2 线性放大模式------------------------------------------------------------------------------10
5.3输出放大特性-------------------------------------------------------------------------------12
6 测量电路1_下变频模式---------------------------------------------------------------------------12
7测量电路2_线性模式-------------------------------------------------------------------------------13
8测量电路3_输出放大F性能----------------------------------------------------------------------14
9应用电路(下变频模式)------------------------------------------------------------------------------15
10功能描述----------------------------------------------------------------------------------------------15
11下变频模式电性能----------------------------------------------------------------------------------16
12总结----------------------------------------------------------------------------------------------------17
参考文献-------------------------------------------------------------------------------------------------18
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