4、onofLaserTrimmingSystemmadeinourcountryneedtobeimproved.Firstly,thethesisanalyzestheitemsthataffectthetrimmingprecision.Anddeterminestoimprovethetrimmingprecisionbyoptimizingcontrolstrategyoflasertrimming.Theactualdata showthatthe hybridintegratedcircuit using the same laser trimmingequipment to
5、 fine-tune the requirements in accordance with thesame precision resistor,theactual transfer resistance precision resistor wastransferred to the correlation.Improve the accuracy of trimming,while optimizing thepremise of the trimming controlstrategy isthe accurateknowledgeof theresistance of the
6、 lasertrimming reversedresistance accuracyof the thesis for the graduatedesign tasks based on mathematicalstatisticaltheory andnumericalsimulation methods todeterminethe the correlationbetween quantitative expression,combinedwith themeasureddata foranalysisvalidation.KeyWords:LasertrimmingTrimmi