The HMC839LP6CE from Analog Devices is a Phase Locked Loop with Frequency 1050 to 1205 MHz, 2100 to 2410 MHz, 4200 to 4820 MHz, Phase Noise -166 to -80 dBc/Hz, Output Power -4 to 12.5 dBm, Harmonic Suppression -55 to -23 dBc, Operating Temperature -40 to 85 Degree C. Tags: Surface Mount, Fractional-N PLL. More details for HMC839LP6CE can be seen below.