The HMC831 from Analog Devices is a Frequency Synthesizer with Frequency 1.815 to 2.01 GHz, Reference Frequency 10 to 200 MHz, Output Power 11 dBm, Supply Voltage 3 to 3.5 V, Current 148 mA. Tags: Surface Mount, PLL Frequency Synthesizer. More details for HMC831 can be seen below.