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VCA821_AGC

Other Parts Discussed in Thread: VCA821, OPA820

各位帮忙看下为什么我按照VCA821芯片表接的AGC,在不同的频率点,幅度不同,测试条件如下,输入300mVpp峰峰值,频率从1M-40M,在不同的频率,输出略有不同,最小的是1.28V,最大的达到1.45V,这是怎么造成的?