Automatic gain and level control circuit and method

摘要

An automatic gain and level control output circuit. The inventive circuit (10) includes a first component (12) for multiplying an input signal by a first reference signal to provide a gain adjusted signal. The input signal is level shifted by a second reference signal by a second component (16) to provide a level adjusted signal. The gain and level adjusted signals are compared to third and fourth reference signals by third and fourth components (26 and 28), respectively. The outputs of the third and fourth components (26 and 28) are combined to provide a first signal. Either the output of the third component (26) or the fourth component (28) is selected to provide a second signal having a first or a second level respectively. The first signal is integrated to provide the first reference signal and the fourth signal is integrated to provide the second reference signal.