Dear Sir / Madam,
For our project we want to implement the DAC60501 and we would like to power it from +5V.
Our I2C communication is on +3V3 logic level.
Where should I connect the SPI2C pin to?
(In the datasheet of DAC60502 it shows the SPI2C pin connected to IOVDD (figure 76, page 36))
I couldn't find specific information in the datasheet about this.
Yours sincerely,
Martin
Hi Martin,
I would recommend you connect SPI2C to VDD. The SPI2C pin is sampled on powerup, so it may be better to connect this to VDD to ensure that the pin is at a defined level when the device powers up in case the 3.3V supply powers up later than VDD.
The SPI2C pin is a digital input that follows the VIH/VIL requirements from the datasheet. If the supplies power up at the same time, you can connect it to either the 3.3V logic level or VDD because either will meet the VIH requirement:
Best,
Katlynne Jones
