The ADF4156 from Analog Devices is a Frequency Synthesizer with Frequency 500 MHz to 6.2 GHz, Reference Frequency 10 to 250 MHz, Supply Voltage 2.7 to 3.3 V, Current 26 mA, Operating Temperature -40 to 85 Degree C. Tags: Surface Mount, PLL Frequency Synthesizer. More details for ADF4156 can be seen below.