TRF371125: What is the maximum demod signal bandwidth?

Part Number: TRF371125

I have a demo of a 56 Mb/s signal being demodulated by a TRF371125 in a TSW6011 evaluation board.

Reading the data sheet on the TRF371125 or TRF371135, and some other user questions, it seems the max demod bandwidth is 15MHz   -  what am I missing?

( we are modulating a 150MHz bandwidth signal @ 3.3 GHz and desire to use this demod - will this work?)

Thanks