文档介绍：小信号调频收音机电路设计
摘要
单片机自从20世纪70年代问世以来,以极其高的性能价格比受到人们的重视和关注,所以应用很广,发展很快。单片机的特点是体积小、集成度高、重量轻、抗干扰能力强,对环境要求不高,价格低廉,可靠性高,灵活性好,开发较为容易。正因为单片机有如此多的优点,因此其应用领域之广,几乎到了无孔不入的地步。在我国,单片机已被广泛地应用在工业自动化控制、自动检测、智能仪表、智能化家用电器、航空航天系统和和国防军事、尖端武器等各个方面。我们可以开发利用单片机系统以获得很高的经济效益。更重要的意义是单片机的应用改变了控制系统传统的设计思想和方法。以前采用硬件电路实现的大部分控制功能,正在用单片机通过软件方法来实现。这种以软件结合硬件或取代硬件并能提高系统性能的控制技术称为微控制技术。例如,本文所要论述的通过单片机来控制TEA5767芯片及驱动LED数码显示实现FM收音并显示频率。现在人们常使用的收音机为手动调频收台,使用较为麻烦,而且由于接收灵敏度不高,所接收的频段较窄。本设计采用的是TEA5767芯片,它是由PHILIPS公司推出的针对低电压应用的单芯片数字调谐FM立体声收音机芯片。
关键词:单片机 FM收音机 TEA5767
Abstract
The singlechip e out since the 1970s, compared to is valued people's and the attention by the extremely high performance price, therefore the application is very broad, the development is very quick. Monolithic integrated circuit's characteristic is the volume is small, the integration rate is high, the weight is light, antijamming ability, is not high to the environment request, the low in price, the reliability is high, the flexibility is good, the development is easier. Because just the monolithic integrated circuit has so many merits, therefore broad its application domain, arrived at the situation which nearly seizes every opportunity. In our country, the monolithic integrated circuit widely has been applied in the industrial automation control, the automatic detection, the intelligent measuring appliance, the intellectualized domestic electric appliances, the aerospace system and with the national defense military, the advanced weapon and so on each aspect. We may develop using the monolithic integrated circuit system obtain the very high economic efficiency. A more vital significance was monolithic integrated circuit's application changed the control system tradition design concept and the method. Before uses majority of control function which the hardware circuit realizes, is realizing with the monolithic integrated circuit through the software method. This kind or substitutes for the hardware by the software union hardware and