The MGA-31689 from Broadcom is a RF Amplifier with Frequency 1.5 to 3 GHz, Gain 16.6 to 19.6 dB, Noise Figure 1.9 dB, Output Power 26.5 to 27.6 dBm, Output Power 0.45 to 0.58 W. Tags: Surface Mount, Gain Block, Power Amplifier. More details for MGA-31689 can be seen below.