文档介绍：通信原理课程设计
题目:基于MAX7033接收器的课程设计
学院名称:电气工程学院
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二0一二年六月
基于MAX7033接收器的课程设计
摘要
MAX7033完全集成的低功耗CMOS超外差接收机是接收300MHz至450MHz频段内幅移键控(ASK)数据的理想选择。这款接收机的RF输入信号范围是-114dBm至0dBm。MAX7033使用极少的外部元件并具有低电流关断模式,非常适用于对成本和功耗有严格要求的应用,如汽车和消费类电子领域。MAX7033包括一个低噪声放大器(LNA)、一个完全差分的镜频抑制混频器、一个带有集成压控振荡器(VCO)的片内锁相环(PLL)、一个带有接收信号强度指示器(RSSI) IF限幅放大器和一个模拟基带数据恢复电路。MAX7033还有一个不连续的一步自动增益控制(AGC),当RF输入信号超过-62dBm时把LNA的增益降低35dB。AGC电路可以由外部控制进入保持状态。MAX7033采用28引脚TSSOP和32引脚TQFN封装,规定工作在扩展温度范围内(-40°C至+105°C)。
关键词:300MHz至450MHz 超外差接收器
集成镜频抑制电路作温度高达+105°C
Abstract
The MAX7033 fully integrated low power CMOS superheterodyne receiver is to receive an ideal choice for amplitude shift keying (ASK) data in the 300MHz to 450MHz band. The receiver has an RF input signal range is from-114dBm to 0dBm. MAX7033 use a few ponents and has a low current shutdown mode is ideal for cost and power consumption critical applications, such as automtive and consumer electronics field. The MAX7033 includes a low noise amplifier (LNA), a fully differential image-rejection mixer, and one with integrated voltage-controlled oscillator (VCO) on-chip phase-locked loops (PLLs), with a received signal strength indicator (RSSI), a IF limiting amplifier and an analog baseband data recovery circuit. MAX7033, there is a continuous one-step automatic gain control (AGC), when the RF input signal exceeds-62dBm reduce the LNA gain by 35dB. The AGC circuit by an external control into the hold. MAX7033 28-pin TSSOP and 32-pin TQFN package, specified over the extended temperature range (-40 ° C to 105 ° C).
Key words: 300MHz to 450MHz superheterodyne receiver integrated image
rejection circuit operating temperatures up to 105 ° C
目录
1. MAX7033芯片简介……………………………… 4
2. MAX7033芯片封装与引脚功能……………… 5
3. MAX7033内部结构与工作原理……………… 7
晶体振荡器……………………………………… 7
数据过滤………………………………………… 8
数据限幅器……………………………………… 9
峰值探测器……………………………………… 10
功能框图………………………………………… 10
电压调节器………………