I have been working with RFMD parts on and off for over a decade. If you are small company (translate:
not a cellular phone company), you will find it very difficult to get technical support from them.
I am using the RF2172 power amp in a design right now and I have received zero support for the part.
Being a PA, it is tricky and touchy and moody; all good reasons to call up the company for tips and
tricks when using it. I got nothing from RFMD. I did, however, get a SemTech engineer who knows the RFMD
part really well to help me out.
The RF Troubleshooter