英语翻译

Theintersectionoftheresponsesexhibitsacombinedslope

of40dBperdecade,leadingtoringingoroutrightoscillation.

Let’srefertothatpointasthe“criticalintersectionfrequency.”

Compensationforthiscircuitisbestaccomplishedwithan

alternatefeedbackpath;theresponseofwhichwilldominate

atthecriticalintersectionfrequency.

Agoodcriteriafortheresponseofthealternatefeedback

wouldbe:

1.Aresponsewhichdominatesbyatleastanorderofmagnitude

(20dB)atthecriticalintersectionfrequency.

2.Thealternatefeedbackresponseshouldhaveacorner

occurringatafrequencyanorderofmagnitudelessthan

thecriticalintersectionfrequency.

Toprovidethisresponse,thealternatefeedbackcomponents

havebeenselectedtoprovidethecompensatingresponseillustrated

inFigure6.ABinFigure6isthedominantfeedback

paththeamplifierwillseeinitsclosedloopconfiguration.RF

merelyactsasagroundlegreturnimpedanceforthealternate

feedbackloop,andshouldbealowvaluebetween100and

1000ohms.Rdisthenselectedtoprovidethedesiredhigh

frequencygain,andCfisselectedforthealternatefeedback

corner.