My customer would like to know three questions about ADS7128I below, please help on it and thanks!
- what is the timing sequence for AVDD/DVDD? Could they use main power(not always on) for DVDD and standby power(always on) for AVDD?
- what is the status on GPIO pin when AVDD/DVDD is not given?
- Is there issue that AVDD=3.3V and DVDD is off?