A new BICMOS monolithic automatic gain control (AGC) amplifier with wi
de dynamic range is described, The forward gain path has 120 k Omega t
ransimpedance, 140 MHz bandwidth,. input noise current spectral densit
y of 1.17 pA/root Hz and input signal current handling capability of 4
mA. An on-chip peak detector incorporating a 25 pA current source yie
lds AGC hold times in the millisecond range.