We are using TPS7A8300RGWT in our design to generate 1V and 1.2V from 1.8V.
We are monitoring these voltages with 5% tolerance using a micro-controller with built-in 10-bit ADC in the design.
We have received the designed PCB recently. Currently we are in testing phase.
During testing, its noticed that on random occasions, micro-controller was reading out of range value for 1V and 1.2V voltages from TPS7A8300RGWT.
Now during investigation to find out the reason, its noticed that when CNR/SS capacitor is touched with oscilloscope probe or touched with finger, regulator output is going out of tolerance consistency. This is happening on both the regulators. I am not sure if this is co-related to random fault from these regulators.
Kindly look into this issue and let me know if there is any fix to this.