Hello,
Please let me know the behavior of ADS7955.
Vref is set to Range 2 then VA falling to under the 2*Vref.
In this case, Input range(max) becomes the VA.
There is not other problem.
Is my understanding correct ?
For example ,
VA is 5V and Vref is set Range 2(2*Vref).
In this stage , input voltage range is 0V to 5V.
After this, the VA fell to 4.0V.
Thus, the input voltage range becomes 0V to 4V.
VA is 5V and Vref is set Range 2(2*Vref).
In this stage , input voltage range is 0V to 5V.
After this, the VA fell to 4.0V.
Thus, the input voltage range becomes 0V to 4V.
Best Regards,
Ryuji Asaka