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OPA2863: OPA2863使用问题?

Part Number: OPA2863

如下电路,运放工作在负反馈状态下,两输入端电压应该相等,实际测试输入引脚3的电压为1.496V,测试输出引脚2的电压只有1.482V,之前用其它运放输入和输出差不超过0.002V,采用OPA2863为什么差0.014V这么多?其中R117如果更换成300K,运放输出偏差更大,3引脚输入为1.496V,2引脚输出测试为1.39V,请问受哪个指标影响或原理图设计存在问题吗?