The ESD AutoDetect Amplifier from Microwave Solutions is a low frequency amplifier that operates from 225 to 400 MHz with built in ESD protection, a RF input power AutoDetect threshold turn on circuit and an integrated filter to attenuate adjacent or harmonically related signals. When the RF signal applied to the RF INPUT connector exceeds 0 dBm (+/-2dBm), the internal AutoDetect threshold circuit turns on the bias to the RF gain stages and also toggles the state of an internal Field Effect Transistor. Hysteresis is approximately 1 to 3 dB, which means once the amplifier is toggled by the applied RF level crossing the threshold level, the amplifier wont again toggle unless the threshold is again crossed by an additional 1 to 3 dB.
