The ABA-54563 from Broadcom is a RF Amplifier with Frequency 3.4 GHz, Gain 21 to 25 dB, Gain Flatness 0.3 to 0.5 dB, Noise Figure 4.4 dB, Output Power 3.6 to 4.8 dBm. Tags: Surface Mount, Gain Block, Power Amplifier. More details for ABA-54563 can be seen below.