| 一种程控放大滤波器设计 |
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| 引用本文： | 常新华,王洪刚,于永江,马秋明. 一种程控放大滤波器设计[J]. 四川师范大学学报(自然科学版), 2009, 32(3). DOI: 10.3969/j.issn.1001-8395.2009.03.025 |
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| 作者姓名： | 常新华 王洪刚 于永江 马秋明 |
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| 作者单位： | 鲁东大学,物理与电子工程学院,山东,烟台264025 |
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| 基金项目： | 国家自然科学基金，山东省高等学校实验技术研究项目 |
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| 摘 要： | 利用AD620仪表运放、TL084、DAC转换器MAX527、可编程有源开关电容滤波器LMF100及DDS集成芯片AD9854等,设计了以单片机为控制核心的交流小信号程控放大和程控滤波器,程控滤波可实现四阶高通、低通以及带通滤波,放大器增益和低通、高通截止频率均可实时键盘调整,并介绍了设计的详细方法和原理.
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| 关 键 词： | 程控放大滤波 |
Design of a Programmable Amplifier and Filter |
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| CHANG Xin-hua,WANG Hong-gang,YU Yong-jiang,MA Qiu-ming. Design of a Programmable Amplifier and Filter[J]. Journal of Sichuan Normal University(Natural Science), 2009, 32(3). DOI: 10.3969/j.issn.1001-8395.2009.03.025 |
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| Authors: | CHANG Xin-hua WANG Hong-gang YU Yong-jiang MA Qiu-ming |
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| Affiliation: | School of Physics and Electronic Engineering;Ludong University;Yantai 264025;Shangdong |
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| Abstract: | A programmable amplifier and filter is designed for AC small signal,which uses MCU as the control core and applies AD620 instrumentation amplifier,TL084,DAC converter MAX527,programmable switch electric capacity filter LMF100 and DDS integrated chip AD9854 etc.The programmable filter can accomplish four-order highpass,lowpass and bandpass.The gain of the amplifier and cut-off frequencies can be adjusted by keyboard continually.Detailed methods and principles are also introduced. |
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| Keywords: | LMF100 AD620 MAX527 |
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