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运放的驱动能力 运放输出电压稳定性

Other Parts Discussed in Thread: OPA2187

如果某个运放的驱动能力为20mA,在带动10mA的负载时,运放的输出电压会跌落吗,跌落到什么范围?

想用反相放大电路将+5V基准电压变为-5V基准电压,担心运放的驱动能力不够导致-5V基准电压不准。