一种高频宽带增益控制模块的设计与实现

The Design and Realization of High Frequency Wide Band Gain Controller

具有高输入阻抗、宽频带、大动态和灵活控制方式的输入信号调理电路,是影响电子测试系统和数据采集系统质量的首要因数,也是相关电子工程设计一直存在的难点之一。本文介绍了一种基于VCA822的高频宽带增益控制模块,分析了该模块的电路原理和设计制作过程,描述了该模块的技术优点和广泛应用价值。同时从一个侧面表明,大学生积极参加TI杯模拟电路设计这一类的竞赛,不仅能够切实提高电子产品的设计和制作能力,而且能够有所发现和创新。

One of the most important factors to determine systems is to have a good input signal adjustment unity the quality of electronic measure systems and A/D with high imput resistance, wide frequency band and enough dynamic scope, and it has also a difficulty in the relative electric engineering design. This article introduces a new kind of high frequency gain controller and analyzes the circuit principle and design process. The technical advantages and application value of this controller are also described. It is proved that taking part in the competition is helpful for students in improving their ability to design and make electronic products and can also help them with their creativity.