AD627 PWM CURRENT SENSE

Hello

I am already using the AD627 that I find fantastic for example strain gauge measurement.

Now, my problem is to measure a current through a shunt of max 70 mV.

It is a PWM signal, thus, the information is a pulse where frequency is stable but the modulation is not. 

Therefore my output is also a pulse, what I can not use because I need a DC information, not a PWM one.

So, is there a special schematic / add/ filtering / else that I have forgotten ? 

In summary, I have a shunt before the load that works in PWM mode. I want to measure the current and get a DC voltage. Possible  with the AD 627 ?

Thanks for your help

Regards

Vincent

IN+ voltage versus GroundIN+ : IN- differential voltage on shunt