The BGA2801 from NXP Semiconductors is a RF Amplifier with Frequency 0.25 to 2.15 GHz, Gain -1 to 3 dB, Noise Figure 3.4 to 4.4 dB, Output Power -2 to 5 dBm, Output Power 0.001 to 0.003 W. Tags: Surface Mount, Power Amplifier. More details for BGA2801 can be seen below.