The ADF4355-2 from Analog Devices is a Frequency Synthesizer with Frequency 53.125 MHz to 4.4 GHz, Reference Frequency 10 to 600 MHz, Output Power 8 dBm, Supply Voltage 3.3 to 5 V, Current 140 mA. Tags: Surface Mount, PLL Frequency Synthesizer. More details for ADF4355-2 can be seen below.