凌力尔特模拟创新杂志 (JANUARY 2011)

Yourdesignisnearlycomplete,butanaggingtimingrequirementhassuddenlycroppedup.Itmightcallforavariablefrequencyoscillator,alowfrequencytimer,apulse-widthmodulator,acontrolledone-shotpulsegenerator,oranaccuratedelay.Regardlessoftherequirement,youneedaquick,reliable,stablesolution—thereisnotimetodevelopcodeforamicrocontroller.Youcouldbuildsomethingoutofdiscretecomponentsandacomparatorortwo,ormaybethegoodold555timercoulddothejob,butwilltheaccuracybethere?Willittakeuptoomuchroomontheboard?Whatabouttimetotestandspecifythebench-builttimer?

January2011Volume20Number4INTHISISSUEsolarbatterychargertracksTimerBlox:Function-SpecificICsQuicklyandReliablySolvepanelmaximumpower10TimingProblemsI2Csystemmonitorcombinestemperature,voltageandcurrentmeasurements22AndyCroftsisolateddatatransmissionYourdesignisnearlycomplete,butanaggingtimingrequirementandpowerconversionhassuddenlycroppedup.Itmightcallforavar