The ADF4158 from Analog Devices is a Phase Locked Loop with Frequency 6.1GHz, Phase Noise -216 dBc/Hz, PLL Current 23 mA, PLL Voltage 2.7 to 3.3 V, Reference Frequency 250 MHz. Tags: Surface Mount, Fractional-N PLL, Single Fractional-N PLL. More details for ADF4158 can be seen below.