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INA128: TINA仿真和实测不一致

Part Number: INA128

INA128 Tina仿真图如下:

实测波形如下:(原理图同仿真图中所示)

输入信号:40KHZ, VPP:80mV

请帮忙确认下问题出在哪里?如何解决,谢谢。

  • 您好,

    电路图没有问题,输入40KHZ, VPP:80mV的信号,我看了下带宽和SR都没有问题。请实际测量下两供电电压是否正常?电路连接是否存在虚焊等情况,信号源是怎样产生的?实际连接时是否与INA128 共地?