摘要:运算放大器和数字电位器中添加一个标准的激光驱动器电路产生一个驱动程序,在反应温度变化的激光功率设定点,这是一个电位值的线性函数产生一个光电二极管电流。
Maxim>AppNotes>DigitalPotentiometersOptoelectronicsKeywords:laserdrivers,digitalresistors,opamps,photodiodesMar31,2011APPLICATIONNOTE4557DigitalResistorSetsOperatingPowerforLaserDriverBy:JamesHorsteAbstract:Addinganopampandadigitalpotentiometertoastandardlaser-drivercircuitproducesadriverthatvariesthelaser'spower-setpointinresponsetotemperature,generatingaphotodiodecurrentthatisalinearfunctionofthepotentiometervalue.AsimilarversionofthisarticleappearedintheMarch15,2007issueofEDmagazine.TheMAX3740VCSELlaserdriverandDS1859dual,temperature-controlleddigitalresistorarepopularchoicesforSFPandSFFfiber-opticsystems,duetotheirsm
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