The ASL21X from ASB Inc. is a RF Amplifier with Frequency 1.575 to 2.45 GHz, Gain 13 to 22 dB, Noise Figure 0.6 to 1.10 dB, Output Power -10 to 3 dBm, Output Power 0.0001 to 0.002 W. Tags: Chip, Low Noise Amplifier. More details for ASL21X can be seen below.