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询问采样保持电路的设计:

我使用了TI的单片集成采样保持电路LF398芯片,采样速率在4kHz,效果很好,但是我的电路要求供电在正负3伏,LF398的供电在正负5伏,请问有什么解决方法?我是初学者,谢谢大家!