Discrete automatic gain control with high stability, high speed and low distortion

摘要: High speed automatic gain control (AGC) circuitry, capable of use in pulse or CW systems, incorporates hysteresis for improving the stability and distortion characteristics AGC. After a setting is selected, built-in feature prevents an adjustment that until amplitude input signal varies more than predetermined amount. Sampling adjustments are accomplished by digital circuitry. In one embodiment, AGC on pulse-to-pulse basis.