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LMP8601: HIgh Voltage Low Current Measurement

Part Number: LMP8601
Other Parts Discussed in Thread: INA138, INA181, INA190, INA185, INA226, AMC1302

Hello All,

I am designing a V/I Measurement device for a Geophysics application. In which we are applying 400Vp-p @1Hz square wave to two points (A & B)on earth (approx 50-80mtrs apart).

Now I want to measure current flowing through these two points on earth. How I can perform this measurement , i have done lot of research on current sense amplifier but didnot find any solution.

may be my idea of using current sense amplifier is wrong ?  please suggest me how to do this, similarly  i want to measure voltage between two intermediate points (c & d).

Please help me designing this Device. Thanks

Note: current would be of range from few uA to mA.