When I use LVDT390, the differential input P-impedance changes from 180KΩ to 453Ω, which leads to a high single-ended signal. I would like to ask under what circumstances this situation occurs, the use of chips will break down?
In addition, I have another question. Does the load input current of the output terminal, which is higher then 10 mA, affect the differential input? The voltage supply is 3.3V, well grounded, and the differential input is connected to the PCB by cable.
