AD5254
Production
The AD5253Â / AD5254Â are quad-channel, I2C, nonvolatile memory, digitally controlled potentiometers with 64/256 positions, respectively. These devices...
Datasheet
AD5254 on Analog.com
Question
Is it possible to have VDD for the AD5254 set to +5V but run the I2C bus to the
AD5254 at 3.3V ?
Answer
In the specifications section we specify that for VDD = 5V, the minimum logic
high voltage required is 2.4V:
In other words, 3.3V logic should work.
We also have digiPOTs with dedicated VLOGIC pins where you can define the logic
voltages, it works independently of the power supplies.
