SAADC reference voltage

[Sundar_santhanam@1998]

Hi, 

Is it possible to give 3.3V to the Vdd pin of my nrf52840 to change the reference voltage of saadc to 3.3V ? Do I have to change any configurations for the same?

[Sundar_santhanam@1998]

I used the Vdd Pin as power source which gave 3V as power supply , actually that solved my problem.