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INA122单电源3.3V供电。RG=10K欧，IN-=271.6mv，IN+=297.3mv，REF和-VS接地。 输出电压不稳定。输出有20MV的波动，怎么回事啊？求助。
单电源的话REF接到中间电平去
试一下 先谢谢！
能把波形发上来看下吗？我用TINA仿真没问题，输出为642.23mV直流。
谢谢！ 输入端加了一个电容，稳定了。INA122好用。
