The AVT-54689 from Broadcom is a RF Amplifier with Frequency 0.05 to 6 GHz, Gain 16.3 to 20.5 dB, Noise Figure 4.1 dB, Output Power 17.2 to 19.4 dBm, Output Power 0.05 to 0.09 W. Tags: Surface Mount, Gain Block, Power Amplifier. More details for AVT-54689 can be seen below.