INA118 放大电压2与5管脚是否必须相连?
如果2与5管脚相连同时接地,可以很好实现放大,输出信号稳定,但此GND接回反馈后与单片机GND有很高的电压差,如何消除?
如果2.5管脚不相连,将5接入反馈后单片机的GND,放大后的输出信号不稳定,示波器显示为方波,如何解决?
谢谢!
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