ADS9226: Is it normal for ADS9226 REFP_A, REFP_B voltage to be different from REFIN voltage? Why?

Hello, I designed the circuit using ADS9226, with AVDD at 5V and DVDD at 3.3V. I inputted REFIN at 2.5V, but measured the voltage on REFP_A and REFP_B to be 4.3V.
According to the datasheet, REFP_A and REFP_B are the buffer outputs of REFIN, and their voltages should be equal.
I don't know why this result occurred, please help me answer it, thank you!

Vivian Gao：

感谢您对TI产品的关注！ 关于你的咨询，我们正在确认你的问题，稍后回复您。

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y x：

Found the reason, REFBUF has a fixed gain.

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Lydia：

Thank you for sharing