The LTC6947 from Analog Devices is a Phase Locked Loop with Frequency 350 MHz to 6 GHz, Phase Noise -274 to -109 dBc/Hz, Output Power -9 to 3 dBm, Operating Temperature -40 to 105 Degree C, PLL Current 0.053 to 140 mA. Tags: Surface Mount, Fractional-N PLL. More details for LTC6947 can be seen below.