Hi every one,
(please read ADC ADC7091R datasheet carefully before answering).
I am using ADC AD7091R for my project. I am interfacing it with a micro-controller.
The power supply I have given to the AD7091R is +3.3V
The power supply I have given to the micro-controller is +5V.
SO the VDRIVE for the ADC should be +5V.
which means that the SPI interface between the ADC and the uController will have a 5V signal.
I would like to clarify the criterion:
Can the device function with Vdrive>Vdd.
(I am asking this question because I have also selected similar ADC AD7954. It is similar to the ADC AD7091R. But for AD7954 there is a condition Vdrive should not exceed Vdd+0.3V. So i am supplying the Vdd=3v. so i couldnot use this device).
In the data sheet it is clearly given that the Vdd and Vdrive are independant, but I want it clarified with a professional and who has worked with the device.
Thanks in advance.