The ADF4252 from Analog Devices is a Frequency Synthesizer with Frequency 250 MHz to 3 GHz, Reference Frequency 250 MHz, Supply Voltage 2.7 to 3.3 V, Current 13 mA, Operating Temperature -40 to 85 Degree C. Tags: Surface Mount, PLL Frequency Synthesizer. More details for ADF4252 can be seen below.