The HMC820 from Analog Devices is a Frequency Synthesizer with Frequency 1.095 to 5.1 GHz, Reference Frequency 10 to 200 MHz, Output Power 12.5 dBm, Supply Voltage 3 to 3.5 V, Current 148 mA. Tags: Surface Mount, PLL Frequency Synthesizer. More details for HMC820 can be seen below.