The AR2538 from Teledyne Microwave Solutions is a RF Amplifier with Frequency 20 MHz to 2.5 GHz, Small Signal Gain 19.5 to 21 dB pk-pk, Gain Flatness ±0.8 to ±1 dB, Noise Figure 3.5 to 4 dB, Output Power 24 to 26 dBm. Tags: Drop-In, Power Amplifier. More details for AR2538 can be seen below.