The ASX521 from ASB Inc. is a RF Amplifier with Frequency 900 MHz to 2.7 GHz, Gain 16.5 to 28.0 dB, Noise Figure 5 to 11.0 dB, Output Power 30 to 32 dBm, Output Power 1 to 1.58 W. Tags: Chip, Power Amplifier. More details for ASX521 can be seen below.