vca810可变增益集成宽带放大器
时间: 2023-10-25 21:10:03 浏览: 245
VCA810是一款可变增益集成宽带放大器。它是一种输入直接耦合的压控增益放大器,可以接受直流输入。当控制电压在0V-2V之间变化时,它的增益范围从-40dB到40dB,具有线性的增益控制特性。VCA810采用差分输入和单端输出结构,控制电压为单端输入。随着控制电压的增加,增益会减小,这使得VCA810适用于自动增益控制(AGC)功能,即输出幅度越大,增益越小,从而使输出幅度趋于稳定。VCA810具有恒定的带宽,约为35MHz。\[3\]
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