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MAX49925 - Use case of high value of series resistor at input path

Category: Datasheet/Specs
Product Number: MAX49925

We need to monitor the current through a Shunt resistance of 40mOhm.

For the diagnostic purpose, we are planning to keep 1K ohm resistor in series between the IN+ & IN- pins and the shunt resistor.

So now the questions are,

1. Is it allowed to have 1K ohm resistance in front of IN+ & IN- pins of MAX49925 device?

2. What is the functional impact of having high input resistance in front of IN+ & IN- pins of MAX49925 device?

3. Is there any formula or simulation is available to estimate the impact of MAX49925 device due to this configuration?