The HMC840 from Analog Devices is a Frequency Synthesizer with Frequency 1.31 to 2.83 GHz, Reference Frequency 50 to 200 MHz, Output Power 11.5 dBm, Supply Voltage 3 to 5.2 V, Current 144 mA. Tags: Surface Mount, PLL Frequency Synthesizer. More details for HMC840 can be seen below.