基于MAX274的低通滤波器设计方法

Design Method of Low-pass Filter Based on MAX274

摘要:

介绍了一种基于 MAX274 芯片设计制作多通道有源低通滤波器的方法，并通过 MATLAB 仿真得到滤波器频率响应曲线，验证其在相应频带内有较好的滤波与增益性能。该设计体积小、单片集成、方便调试，应用于某大深度潜标项目水声测量装置中，能够实现对深海环境背景下目标信号的监测以及海洋环境噪声的长期定点采集。

Abstract:

This paper introduces a design method of multi-channel active low-pass filter based on MAX274 chip，and low-pass filter frequency response curve is obtained and verified by Matlab simulation. It’s observed that the low-pass filter’s filtering and gain performance in the corresponding frequency band is fine. This design is small in size，monolithic and easy to debug. When used in underwater acoustic measurement device of a large depth submersible project，this device can realize the monitoring of target signal under the deep sea background and long-term fixed-point acquisition of marine environmental noise.