| 单片机的可控放大器程控滤波器设计 |
| |
| 引用本文： | 陈寒青,纪艺娟,丁时栋,谢培贤.单片机的可控放大器程控滤波器设计[J].单片机与嵌入式系统应用,2011,11(5):63-66. |
| |
| 作者姓名： | 陈寒青 纪艺娟 丁时栋 谢培贤 |
| |
| 作者单位： | 厦门大学嘉庚学院,漳州,361005 |
| |
| 摘 要： | 基于单片机设计了一种可控放大器程控滤波器.可控放大部分以可控放大器PGA203为核心,实现输出增益的动态调整;程控滤波器以开关电容滤波器LMF100为核心,使用DDS芯片AD9850产生可变的时钟,实现滤波器的截止频率可调;幅频特性测试仪采用AD9850产生扫频信号,AD837进行有效值检测,TLC5510进行A/D转...
|
| 关 键 词： | PGA203 LMF100 AD9850 STC12C5A32AD |
Programmable Filter with Controllable Amplifier Based on MCU |
| |
| Chen Hanqing,Ji Yijuan,Ding Shidong,Xie Peixian.Programmable Filter with Controllable Amplifier Based on MCU[J].Microcontrollers & Embedded Systems,2011,11(5):63-66. |
| |
| Authors: | Chen Hanqing Ji Yijuan Ding Shidong Xie Peixian |
| |
| Affiliation: | (Tan Kah Kee College, Xiamen University, Zhangzhou 363105, China) |
| |
| Abstract: | A programmable filter with controllable amplifier is designed based on MCU. With PGA203 as the core,the dynamic adjust- ment of output gains are realized. AD9850 is used to produce a variable clock,and the programmable filte can adjust the cut-off frequency using switching capacity filter LMF100. In amplitude-frequency characteristic tester, AD9850 produces the swept-frequency signal, AD837 realizes the virtual value detection, and TLC5510 completes A/D conversion. Taking STC12CSA32RD as the core, using LCD and keyboard, the amplifier realizes the preset,test and display of the gains and cut-off frequency. |
| |
| Keywords: | PGA203 LMF100 AD9850 STC12C5A32AD |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
