The MMA20312B from NXP Semiconductors is a RF Amplifier with Frequency 1.8 to 2.2 GHz, Power Gain 27.2 dB, Small Signal Gain 25.5 to 28.8 dB, Noise Figure 3.3 dB, Output Power 30.5 dBm. Tags: Surface Mount, Driver Amplifier, Power Amplifier. More details for MMA20312B can be seen below.