文档介绍：XXXXXX大学
毕业设计(论文)
题目:程控滤波器的设计
申请XXXX大学工学学士学位论文
学院:电气与电子工程学院
专业: XXXXXXX
学生姓名: XXX
指导教师: XXX
毕业设计(论文)时间:二XXX年二月二十三日~六月十二日共16周
摘要
本文设计了一个程控滤波器系统。该系统以凌阳单片机SPCE061A作为控制中心,用美国Maxim公司的可编程开关电容型通用滤波器MAX262专用程控滤波器芯片来完成滤波功能,用美国ADI公司的增益可程控集成运算放大器AD603来完成信号放大功能。本设计的主要内容包括:基于AD603增益可控放大器电路、基于MAX262的程控滤波器电路、单片机控制电路、语音电路、电源电路、程序下载区电路和理论分析计算以及软件实现等。在该系统采用AD603与MAX262相结合的方式,通过滤波器的软件设计可以用键盘设置不同的工作模式,分别完成巴特沃兹低通滤波器、巴特沃兹高通滤波器和四阶椭圆型低通滤波器功能,滤波器的通带、截止频率等参数也可通过键盘设置。整个系统的控制和操作全部由凌阳单片机通过控制电路完成,如各项性能指标的测量、各种信号之间的切换、LCD显示、实时语音播报等。
本系统设计简单,能很好地实现滤波器的程控,使用方便,具有较高的性价比、实用性和使用价值。
关键词:程控滤波器,增益可控,模式选择,参数设置,凌阳单片机SPCE061A
Abstract
This paper designs a program-controlled filter system. This system use SPCE061A chip sunplus as the control center, the CMOS dual secong-order universal switched-capacipor active filters MAX262,which is the special programable filters chip of plete the filiter funtion,the chip with American panies gain a programmable integrated operational amplifier amplification function AD603 to finish. The design of the main contents include: based on AD623 gain controlled amplifier circuit, based on MAX262 SPC filter circuit, control circuit and audio circuit chip and power circuit, download area circuit, theoretical analysis, calculation and software. In this system AD603 used bination with MAX262 way, through the filter, the software design can use the keyboard Settings of different work patterns pleted bart hogwarts low-pass filter, bart hogwarts high-pass filter and fourth-order elliptic low-pass filter function, and the bandpass filter cutoff frequency characteristics, via keyboard Settings. The whole system of control and operation by MCU control circuit pleted by sunplus, such as various performance indicators measuring, various signal switching between, LCD display, real-time speech, etc. The system is simple in design, can well realize filter SPC, easy to use, with high performance, practicability and use value.
Keywords: Program-controlled filter, Gain-controll