The SYN4350 from APA Wireless is a Frequency Synthesizer with Frequency 4.35 GHz, Reference Frequency 10 to 100 MHz, Output Power 4.5 to 9.5 dBm, Spurious -60 dBc, Phase Noise -127 to -90 dBc/Hz. Tags: Surface Mount, PLL Frequency Synthesizer. More details for SYN4350 can be seen below.