Hi sir,
I wanna confirm the chip status when the chip is at the following condition.
VS is stable at 15V.
Assuming that the (VIN +) - (VIN -) Voltage difference is stable at 0.1V,
what kind of process will output be in the process of VIN + and VIN - gradually boosting from 0V to 2.7V,
in other words, in the process of power on?
What kind of process will output be?
it will always be amplified at 100x (A3),
Or has it been outputting low-level 0V before 2.7V?
Thanks.
Regards,
Hello Frank,
The input VCM will be limited by the supply voltage. For the INA4290 using a 15V supply the VCM lowest point is about 6V see attached plot from datasheet. When the VCM is below the chart plotted line the output is not know and that is the case for it. There will not be damage at this point but for the application you mentioned it looks like the INA4290 cannot be used. Is there any way the Supply voltage can be 5V? In this case the output voltage is still not know. During the transition below usable VCM to operating range there will be a transient similar to 6-40 or 6-42 in the datasheet, below for convivence.
