The HMC311ST89 from Analog Devices is a RF Amplifier with Frequency DC to 6 GHz, Gain 16 dB, Noise Figure 5 dB, Output Power 15.5 dBm, Output Power 0.04 W. Tags: Drop-In, Gain Block, Driver Amplifier, Power Amplifier. More details for HMC311ST89 can be seen below.