The AVT-55689 from Broadcom is a RF Amplifier with Frequency 0.05 to 6 GHz, Gain 15.5 to 18.8 dB, Noise Figure 4.3 dB, Output Power 19.5 to 20.6 dBm, Output Power 0.09 to 0.11 W. Tags: Surface Mount, Gain Block, Power Amplifier. More details for AVT-55689 can be seen below.