Quote:
Originally Posted by GrimJosef
Is part of the problem that crossover distortion occurs at a point where both output devices are so close to cut-off that the amp transiently has almost no open-loop gain ? Without open-loop gain feedback struggles to do much good.
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This is prevalent in phase locked loops using phase/frequency detectors implemented in logic. They have a discontinuity at about zero phase difference, where operation is essentially a race hazard. Gain can go up as well as down, and exhibit hysteresis!
Makes a right b*gger of careful design. The fix is a bit of a cop-out, to bias it so operation sits off to one side.
David