文档介绍：Lecture12 DesignofOpAmpsMicro-----electronicsDepartmentthecharacterizationsof op-ampslarge-signalvoltagetransfercharacteristicslarge-signalvoltageswinglimitationssmall-signal,frequencyindependentperformance-----gain,inputresistance,outputresistancesmall-signal,frequencyresponseotherproperties-----noise,powerdissipation,-amplifierswillbecharacterizedbythefollowingproperties:Micro-electronicsDepartmentdesignprocessof op-,,(layout)-electronicsDepartmentdesignprocessof op-amps(cont.)1).Processspecifications(VT,K/,Cox,etc)2).Supplyvoltageandrange3).Supplycurrentandrange4):Micro-electronicsDepartmentdesignprocessof op-amps(cont.)gain2)gainbandwidth3)settlingtime4)slewrate5)monmoderange(ICMR)monmoderejectionratio(CMRR)7)power-supplyrejectionratio(PSRR)8)output-voltageswing9)outputresistance10)Offset11)noise12)powerdissipation13):Micro--mirrorloadDesignconsiderations:ConstraintsspecificationsPowersupplysmall-signalgainTechnologyfrequencyresponse(CL)TemperatureICMRslewrate(CL)powerdissipationMicro-electronicsDepartmentDesignexample(cont.)-mirrorload(cont.)Usefulrelationships:urrentsfollowingfromVDDtoVSSMicro-electronicsDepartmentDesignexample(cont.)designprocedure:1)pickISStosatisfytheslewrateknowingCLorthepowerdissipation;2)checktoseeifRoutwillsatisfythefrequencyresponse(f-3dB),ifnotchangeISSormodifythecircuit(chooseadifferentt