四川师范大学成都学院广播电视方向课程设计函数信号发生器设计学生姓名杨媛媛学号2012101077所在学院通信工程学院专业名称通信工程班级2012级广电班指导教师周永强成绩四川师范大学成都学院二○一五年六月四川师范大学成都学院本科毕业设计函数信号发生器设计学生:杨媛媛指导教师:周永强内容摘要:在现代电子学的各个领域，常常需要高精度且频率可方便调节的信号发生器。种波形曲线均可以用三角函数方程式来表示。能够产生多种波形，如三角波、锯齿波、矩形波（含方波）、正弦波的电路称为函数信号发生器，又名信号源或振荡器。函数信号发生器与正弦波信号发生器相比具有体积小、功耗少、价格低等优点,最主要的是函数信号发生器的输出波形较为灵活,有三种波形（方波、三角波和正弦波）可供选择，在生产实践，电路实验，设备检测和科技领域中有着广泛的应用。该函数信号发生器可产生三种波形，方波，三角波，正弦波，具有数字显示输出信号频率和电压幅值功能，其产生频率信号范围1HZ～100kHZ，输出信号幅值范围0～10V，信号产生电路由比较器，积分器，差动放大器构成，频率计部分由时基电路、计数显示电路等构成。幅值输出部分由峰值检测电路和芯片7107等构成。关键词:信号发生器比较器积分器ADC芯片DesignoffunctionsignalgeneratorAbstract:Inallareasofmodernelectronics,oftenrequiringhighaccuracyandfrequencyofthesignalgeneratorcanbeeasilyadjusted.Waveformscurvecanusetrigonometricequationtorepresent.Itcanproduceavarietyofwaveforms,suchastriangularwave,sawtoothwave,squarewave(includingsquare),thecircuitiscalledasinefunctionsignalgenerator,alsoknownasthesignalsourceoroscillator.Functionsignalgeneratorwithsinewavesignalgenerator,comparedwithsmallsize,lesspowerconsumption,andlowprice,themostimportantfunctionoftheoutputwaveformsignalgeneratorismoreflexible,therearethreewaveforms(square,trianglewaveandsine)tochooseI四川师范大学成都学院本科毕业设计from,withawiderangeofapplicationsinproductionpractice,circuittest,testequipmentandtechnologyfields.Thefunctiongeneratorcanproducethreewaveform,squarewave,trianglewave,sinewave,withadigitaldisplayoutputsignalfrequencyandvoltageamplitudefunction,whichgeneratesafrequencysignalrangeof1HZ~100kHZ,theoutputsignalamplituderangeof0~10V,signalgeneratingcircuitconsistsofacomparator,anintegrator,adifferentialamplifier,frequencymeterpartbythetimebasecircuit,countingdisplaycircuitandthelike.Amplitudeoftheoutputsectionconsistsofapeakdetectorcircuitandchip7107andsoon.Keywords:signalgeneratorcomparatorintegratorADCchip目录一信号发生器.................................................................41.1信号发生器的简介........................................................41.2工作原理................................................................41.3信号发生器的分类........................................................51.4信号器的应用及作用......................................................71.4.1应用................................................................71.4.2作用.................................................................82函数信号发生器..............................................................82.1实现方法................................................................83函数信号器的方案设计，并对其比较...........................................103.1概述...................................................................103.2方案一.................................................................113.3方案二.................................................................113.4方案比较与选择.........................................
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