It is packaged using the Tray method since it is a clock IC. Frequency generator is capable of operating at a maximum temperature of 260 when reflowing. RF synthesizer is comprised of CLOCK GENERATOR, PROCESSOR SPECIFIC uPs, uCs, and peripheral ICs.
SI5356A-B05915-GM Features
SI5356A-B05915-GM Applications
There are a lot of Silicon Labs SI5356A-B05915-GM Clock Generators applications.