The MGA-638P8 from Broadcom is a RF Amplifier with Frequency 2.5 to 4 GHz, Gain 16 to 19 dB, Noise Figure 0.87 to 1.15 dB, Output Power 22.2 dBm, Output Power 0.17 W. Tags: Surface Mount, Low Noise Amplifier. More details for MGA-638P8 can be seen below.