For negative feedback, βA OL maintains a phase shift of 180˚ at dc. Function 1/β, which is also called noise gain, is equivalent to V O /V I for non-inverting configurations of amplifiers.

THE use of negative feedback to give improved performance in a number of important respects is now a well-established feature of amplifier design technique, and the simple mathematical treatment ...

Mathematical models are derived here for a variety of related class-D amplifier designs that use negative feedback. These models use an asymptotic expansion in powers of a small parameter related to ...

The circuit in Fig. 2 shows an implementation of the negative-rail current-sensing block. It uses an instrumentation amplifier like the MAX4460 or MAX4208 and some discrete components.

Implemented in the brand’s recent M-10X power amplifier and representing an advance from the previous ODNF (Only Distortion Negative Feedback) amplifier design, LIFES1.0 reduces distortion by ...