For circuit reasons, we are using the AD5271 with a voltage of Vdd:3.300V and Vss:-1.720V.
We are using only RAM because writing to ROM does not work well, probably due to Vss.
I am using RAM only.
So, please tell me about the following.
・ If the EXT_CAP pin is not used, what potential should it be fixed at?
If it is used for a charge pump, I think OPEN is better, but what do you think?