The ASF250 from ASB Inc. is a RF Amplifier with Frequency 70 to 900 MHz, Gain 16.1 to 17.0 dB, Noise Figure 2.4 to 2.7 dB, Output Power 21 to 22 dBm, Output Power 0.13 to 0.16 W. Tags: Chip, Power Amplifier. More details for ASF250 can be seen below.