单片机与嵌入式系统应用2011，Vol.11Issue(5)：63-66,4.
单片机的可控放大器程控滤波器设计
Programmable Filter with Controllable Amplifier Based on MCU
摘要
Abstract
A programmable filter with controllable amplifier is designed based on MCU. With PGA203 as the core, the dynamic adjustment 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 STC12C5A32RD as the core,using LCD and keyboard, the amplifier realizes the preset,test and display of the gains and cut-off frequency.关键词
PGA203/LMF100/AD9850/STC12C5A32ADKey words
PGA203/LMF100/AD9850/STC12C5A32AD分类
信息技术与安全科学引用本文复制引用
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):63-66,4.
