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放大器选型

Other Parts Discussed in Thread: THS3215, OPA2835

您好,我想选一款放大器芯片,可级联的、增益可调、固定增益的都行,我的需求是 工作频率涵盖40MHz±20MHz,增益20~40dB,噪声系数<3.5dB,在TI系统中我查看可级联的放大器的频率最小就到40MHz,想问下各位大神,有没有推荐的TI芯片可以用?