AD603是美国ADI公司利用专利技术生产的一种低噪声增益可程控集成运算放大器，可广泛用于射频自动增益放大、视频增益控制、A/D转换时的量程控制和信号测量系统中。本文介绍了AD603的工作原理及使用要点，给出了以AD603为核心构成的应用电路。 -AD603 is using ADI s patented technology to produce a low-noise programmable gain amplifier integration, can be widely used in

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