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OPA846的规格书上有一个表格，在不同放大倍数下的带宽，相差甚至有一倍。不是说电压型反馈运放的带宽增益积相等的吗，请问这里是怎么回事？
您好，
简单来说是因为OPA846运放是非完全补偿（Decompensated）运放，也就是说它的开环增益频率曲线在达到 0dB 之前有两个极点，平时说的单位增益稳定运放在0dB 之前有一个极点的运放
