I am working on a project in which I am required to sense current in micro ampere range from a 2 kV power supply. Here is a link of an article which I am referring.
While searching on Google I found that in high side current sensing the common mode voltage range should include the supply voltage (that i am providing to the load) within its range. The common mode voltage range of the MAX4172 IC used in the circuit is +2 to +32 V. Will it support my 2 kV supply. If not, could anyone please suggest an alternative solution to this problem.
*Also I am confused about the 9 V battery and 1000 V. Why their positive side is connected to the same node?