改进的电源抑制线性稳压器

klausqhy 20 0 pdf 2022-09-26 19:09:35

摘要:在便携式通信,低压差线性稳压器(LDO)产生的射频电路的电源电压,这些电压供电时,必须是干净的合成器和压控振荡器(VCO)。供应调节,权力往往包括宽带AC纹波的直流叠加。LDO的预期拒绝这些文物。本文介绍了三种方法改善LDO的电源抑制比(PSRR)。

Maxim>Designsupport>Appnotes>FilterCircuits(Analog)>APP883Maxim>Designsupport>Appnotes>Power-SupplyCircuits>APP883Keywords:powersupplyrejectionratio,PSRR,lowdropoutregulator,LDOs,linearregulators,dampening,filter,noise,voltagecontroloscillator,VCO,lineregulation,quiescentcurrentOct01,2002APPLICATIONNOTE883ImprovedPower-SupplyRejectionforLinearRegulatorsAbstract:Inportablecommunications,low-dropoutlinearregulators(LDOs)generatesupplyvoltagesfortheRFcircuitry;thesevoltagesmustbeespeciallycleanwhenpoweringthesynthesizerandvoltage-controlledoscillator(VCO).Thesupplythatpowers

改进的电源抑制线性稳压器

改进的电源抑制线性稳压器

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