High Frequency AGC Has Digital Control TM High Frequency AGC Has Digital Control Application Note June 1998 AN9816 Introduction Many systems (especially communications) require an AGC The gain span limits the AGC circuit’s ability to compensate which will function at 50MHz. Self-calibrating systems such for input voltage changes greater than the gain span, as automatic test equipment also need the high frequency 16.8dB. If the input voltage change will exceed the gain span response, but they add a requirement that the AGC ou……