We are running the ADF4360-9 beyond the published temperature specs. The circuit has been run up to 125 degrees C and appears to work fine for our application. Do you have any information as to the long term effects of operating the ADF4360-9 at this temperature for extended times? Is there a danger of damaging the device when cycling the temperature 25 - 125 degrees C.
The power that supplies the ADF4360-9 has a very slow ramp up time to 3.3 volts. Is there a startup problem for the chip? Will all of the internal circuitry operate properly with a slow moving power supply? How soon can information be sent to the device after the power supply reaches 3.3volts?
It will likely work fine, although operation outside datasheet specifications is unsupported. None of our data suggest that it will cause problems long term.
Once the supply voltage has reached 3.3V, the part can be written to immediately.