摘要
提出了由AT89C51单片机控制增益和截至频率的低通滤波器设计方案,采用测量放大器和开关电容滤波器构成功能部件,重点讨论了基于开关电容滤波芯片和非易失性数字电位器实现截止频率和增益多档位调节的新方法。
This paper introduces a design of low pass filter for programmable amplifying and cutoff frequency by singlechip computer. It uses a Switched Capacitor Filter and a IC Instrumentation Amplifier for basic functional components. We discuss specially a new method for multi-cutoff frequency and multi-amplifying based on switched capacitor filter and nonvolatile digitally controlled potentiometer.
出处
《微电子学与计算机》
CSCD
北大核心
2006年第4期50-52,共3页
Microelectronics & Computer
关键词
数字电位器
测量放大器
开关电容滤波器
单片机
Digitally controlled potentiometer, Instrumentation amplifier, Switched capacitor filter, Single-chip computer
