CMOS源电阻和源跟随增益及其影响

摘要：CMOS源的追随者不容易电路设计，但仔细分析，并考虑在BSIM模型源电阻，设计人员可以实现更精确的结果，以达到更好的匹配低噪声放大器的设计。

Maxim>AppNotes>COMMUNICATIONSCIRCUITSKeywords:SourceResistance,CMOS,Source-Follower,Source-Followergain,BJT,bipolarjunctiontransistor,Jun27,2008commondrainamplifier,small-signalmodel,calculatingsourceresistance,intrinisicgm',low-noiseamplifierAPPLICATIONNOTE4231CMOSSourceResistanceandItsEffectsonSource-FollowerGainBy:JohnRobinsonAbstract:CMOSsourcefollowersarenoteasycircuitstodesign,butbycarefulanalysisandbytakingsourceresistanceintoaccountintheBSIMmodels,designerscanachievemoreaccurateresultstoachievebettermatchinginthedesignoflow-noiseamplifiers.IntroductionTheCMOSsourcefollowerisadifficultdevicetodesignusingaCMOSdevice,becausethetransconductanceofaCMOSdeviceislowco