Hi,
I would like provide 3.3V on Va (analogue supply power) pin and 3.3V on VBD (digital supply power). I saw that is possible to have 3.3 on VBD but is it also correct to have 3.3V on Va ?
Here is the data sheet :http://focus.ti.com/docs/prod/folders/print/ads8319.html
Thank you for taking time.
Best Regards
Steven
Hello Steven,
We're glad to hear that you are using the ADS8319.
The absolute maximums section of the data sheet shows the ranges that may be applied for +VA:
The specifications section of the datasheet indicates that the specification data was collected with 5V applied to +VA, so I would recommend that you do the same if you wish to get all of the specs in the datasheet:
Hi Steven,
In addition to Kevin's comments, I would also like to point out another section on page 4 in the datasheet that gives the required analog and digital voltage for operation.
This section shows that the ADS8319 requires a minimum 4.5V for the analog supply (Va). Below this value the specifications for the part are not guarenteed. Therefore you will not be able to use 3.3V for the analog supply. You could apply 5V to both the analog and digital supples, but be aware that this will change your logic levels.
Regards,
Chris
