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Class AB amps retain place in audio design

Posted: 01 Feb 2007 ?? ?Print Version ?Bookmark and Share

Keywords:amplifier noise performance? differential input differential output amplifier similar to conventional op amp? audio amplifier design? class AB amp design? Simon Bramble?

A quick look at many new low-power speaker amplifiers on the market highlights the move to Class D audio performance. But when it comes to low cost, distortion and noise, Class AB still has the edge. The differential input/differential output amplifier is similar to the conventional single-ended output op amp in terms of the equations that determine its gain.

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