The AC558 from Teledyne Microwave Solutions is a RF Amplifier with Frequency 5 to 500 MHz, Small Signal Gain 10 to 11 dB pk-pk, Gain Flatness ±0.5 to ±0.7 dB, Noise Figure 5.2 to 6 dB, Output Power 17.5 to 19 dBm. Tags: Drop-In, Power Amplifier. More details for AC558 can be seen below.