Journal Article
Amplifier First-Stage Criteria for Avoiding Slew-Rate Limiting
Journal of the Audio Engineering Society · Volume 34 · Issue 5 · pp. 349–353 · May 1986
Abstract
The interrelationships which affect the design of the first stage of a feedback amplifier are examined. A simple but accurate first-stage criterion for avoiding slew-rate limiting in an audio amplifier is derived. This is compared with a pulse-amplifier design criterion, and also a bound on first-stage degeneration due to W. M. Leach. It is shown that Leach's bound is a simpler form of the pulse-amplifier criterion and is therefore useful in the design of pulse amplifiers. It is also shown that the audio-amplifier criterion gives the least stringent design requirement and demands the least first-stage degeneration, affording performance advantages in audio applications.
