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LMV321: LMV321IDCKR 输出不正常

Part Number: LMV321
Other Parts Discussed in Thread: OPA330

Hi 

我们在用LMV321IDCKR 当做电压跟随器时遇到以下问题,在同一个PCB,同样一颗LMV321IDCKR 测试

如上图, 供电电压为3.3V, 在相同的输入电压情况下,输出电压不一样

以下是正常情况,绿色CH2为Vdd, 蓝色CH3为运放输出,与输入信号(~2.9V)重叠

以下是异常情况,输出电压突然变为~3.3V。 看起来是像是运放饱和了,请帮忙看下是什么原因?