标签: an929
相关资源
-
an929FastSwitchingPINDiodesApplicationNote929SwitchingSpeedDefinitionsTheswitchingspeedofaPINdiodemaybedefinedandmeasuredinanumberofways.Ideally,wewouldliketothinkofitasthetimeittakesthedevicetomakethetransitionfromtheminimuminsertionlosscasetothemaximumisolationcaseorviceversa.Becauseofthechargenonlinearitiesduringswitchingofthedeviceandtheneedforreasonablemeasurementtechniques,weoftensettleforsomedefinitionslessthanideal.Afigureofswitchingcapabilitycommonlyusedbyindustryisthereverserecoverytime(trr).Figure1ashowsthediodeintheRFtestcircuit.Figure1bshowsthemonitoredcurrentthroughthediodeusedtodeterminethereverserecoverytime.Notethatunderinitialconditions,aforwar……
