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INA188的增益问题,请TI技术支持帮忙分析一下。非常感谢!

Other Parts Discussed in Thread: INA188

我用的INA188,单电源5V供电,增益设置的是11.6。

实际测试发现当输出电压超过1.54V后,增益开始下降。测试数据如下表。请TI技术支持帮忙分析一下?非常感谢!

Vin(mV) Vout(V) Gain
23.227 0.27053 11.647
68.018 0.79258 11.653
111.38 1.29781 11.652
132.558 1.54015 11.619
153.241 1.58227 10.325
173.565 1.62446 9.359
522.64 2.3171 4.433