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共模电压范围能不能理解为运放构成跟随器时的最大输入电压，而差模输入电压是运放开环时两输入端的差值范围。
还有就是有没有具体的电路来测试这两项参数？
zhang kai zhang 说：是不是闭环状态下是没有差模输入电压范围的
也不能这么说，比如仪表运放就不是
