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ADS125H02: ADS125H02如何用于比例式测量PT100电阻

Part Number: ADS125H02


请问,ADS125H02如何用于比例式测量PT100电阻?采用比例式测量PT100阻值时,既需要用外部参考作为参考电压,而不能采用内部参考作为参考电压,又需要用内部恒流源,而用内部恒流源时又要求使能内部参考,这里似乎是相互矛盾,请问如何解决?