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
Thanks for your answer. With 2 zeners, I have tolerances of it to manage and it is a gap between of those entries of several mili volts so .... I have found a AD626, not so clear if it will work at those voltages but I will check. Have a nice day. Vincent