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关于VCA8617的问题

Other Parts Discussed in Thread: VCA8617

该芯片主要是放大信号功能,为何内部还有一个电压控制衰减器功能模块,很是疑惑。

  • 你好, TI的VCA 打头的part number表征了其是可变增益的产品.

    VCA8617是其中的一款.

    里面包含了2个可变增益的模块, VCA和PGA, 其中VCA模块可实现衰减量的连续可调, 而PGA是有几档选择的增益模块,不是连续可调的.

    所以两者相结合可以实现更大动态的调整.

    谢谢!