The LTC6946-4 from Analog Devices is a Phase Locked Loop with Frequency 0.37 to 6.39GHz, Phase Noise -226 to -73 dBc/Hz, Output Power -0.2 to 3.2 dBm, Operating Temperature -40 to 105 Degree C, Phase Noise at 1 MHz -141to -126 dBc/Hz. Tags: Surface Mount, Integer-N PLL, Fractional-N PLL. More details for LTC6946-4 can be seen below.