The AC581 from Teledyne Microwave Solutions is a RF Amplifier with Frequency 20 to 500 MHz, Small Signal Gain 21.5 to 23 dB pk-pk, Gain Flatness ±0.7 to ±1 dB, Noise Figure 2.8 to 3.7 dB, Output Power 13.5 to 15 dBm. Tags: Drop-In, Power Amplifier. More details for AC581 can be seen below.