MAX038的波形發(fā)生器設(shè)計(jì)

電子信息工程論文編號(hào):DZXX018  論文字?jǐn)?shù):12101,頁(yè)數(shù):29

目錄

摘要 I
ABSTRACT II
第1章 緒論 1
1.1課題背景 1
1.2國(guó)內(nèi)外波形發(fā)生器的發(fā)展現(xiàn)狀 1
1.3研究波形發(fā)生器的目的及意義 2
1.4本文研究的主要內(nèi)容及應(yīng)該解決的問題 2
第2章設(shè)計(jì)方案論證 3
2.1直接利用單片機(jī)實(shí)現(xiàn)方案 3
2.2利用單片集成芯片實(shí)現(xiàn)方案 3
2.3利用DDS芯片實(shí)現(xiàn)的方案 4
2.4三種實(shí)現(xiàn)方案的比較 4
第3章 芯片介紹 5
3.1 信號(hào)發(fā)生芯片MAX038 5
3.1.1信號(hào)發(fā)生芯片MAX038的基本性能特點(diǎn) 5
3.1.2 Max038的基本工作原理 5
3.2單片機(jī)AT89C52 7
3.2.1引腳結(jié)構(gòu)和引腳功能說(shuō)明 8
3.3本章小結(jié) 10
第4章 系統(tǒng)硬件設(shè)計(jì) 11
4.1主體電路結(jié)構(gòu) 11
4.2 系統(tǒng)部件設(shè)計(jì) 11
4.2.1輸入部分 11
4.2.2單片機(jī)控制部分 12
4.2.3 MAX038波形產(chǎn)生部分 13
4.2.4 放大電路部分 16
4.3 小結(jié) 17
第5章 系統(tǒng)軟件設(shè)計(jì) 18
5.1程序設(shè)計(jì)語(yǔ)言與軟件開發(fā)環(huán)境 18
5.2輸入識(shí)別部分 18
5.3控制MAX038部分 19
第6章 設(shè)計(jì)總結(jié) 20
參考文獻(xiàn) 21
致謝 22
附錄1 23
附錄2 25

摘要
 在現(xiàn)代電子學(xué)的各個(gè)領(lǐng)域，常常需要高精度且頻率方面可調(diào)的波形發(fā)生器，波形發(fā)生器的使用普及程度僅次于萬(wàn)用表和示波器。現(xiàn)在的波形發(fā)生器能產(chǎn)生的波形頻率越來(lái)越高，種類越來(lái)越多,但器件成本和技術(shù)要求也大大提高。
 在高精度實(shí)驗(yàn)中運(yùn)用單片機(jī)輸出數(shù)據(jù)、經(jīng)運(yùn)算放大器輸出,產(chǎn)生三角波、正弦波和方波等波形。波形清晰、頻率調(diào)整十分方便、穩(wěn)定性好,如要產(chǎn)生較復(fù)雜的波形只須修改程序,而不需要改裝電路。
 本文介紹了MAX038的特點(diǎn)、引腳功能、內(nèi)部框圖及工作原理。給出了以MAX038為核心的信號(hào)發(fā)生器的完整電路，討論了設(shè)計(jì)思想和MAX038應(yīng)用中涉及的問題。與其他類型的波形發(fā)生器相比,該系統(tǒng)具有的優(yōu)點(diǎn):以單片機(jī)和MAX038為核心構(gòu)成硬件電路具有很高的性能價(jià)格比，體積也可以做得很小。
關(guān)鍵詞： Max038 ；單片機(jī)；波形發(fā)生器

ABSTRACT
 In modern electronics in all areas, the waveform generator is that often requires high accuracy and adjustable frequency , the use of Generator are less popularization than Multimeter and oscilloscopes. Now the waveform generator can produce more higher the frequency waveforms, and more type than before, but the costs of device and technical requirements have risen consumedly.
 In high accuracy experiments ,it can use SCM transmitted data ,and through calculating amplifier ,turn out triangular wave sine wave and square wave ,etc.The wave form is explicit ,with good frequency adjustment and stability performance. It only by varying its software ,not hardware ,if we need obtain more complicated wave form.
 The features, pin description，inner block diagram and application circuit of MAX038 was Introduced in this article. Had given take MAX038 as the core signal generating device complete electric circuit, and the design ideas and involved issues were discussed. With compare of other types the waveform generator, that system had the advantage that SCM and MAX038 to core components of the hardware circuit had very high function price a ratio and can do a small size.
Keywords:  Max038 ; SCM ; waveform generator