The ADF4151 from Analog Devices is a Frequency Synthesizer with Frequency 500 MHz to 3.5 GHz, Reference Frequency 10 to 250 MHz, Supply Voltage 3 to 3.6 V, Current 42 mA, Operating Temperature -40 to 85 Degree C. Tags: Surface Mount, PLL Frequency Synthesizer. More details for ADF4151 can be seen below.