Demystifying Delta-Sigma ADCs

Abstract:Thisin-deptharticlecoversthetheorybehindaDelta-Sigmaanalog-to-digitalconverter(ADC).Itspecificallyfocusesonthedifficulttounderstandkeydigitalconceptsofover-sampling,noiseshaping,anddecimationfiltering.Adescriptionofnewconverter,theMAX1402,andseveralapplicationsforDelta-Sigmaconvertersareincluded.Maxim>AppNotes>A/DandD/AConversion/SamplingCircuitsTemperatureSensorsandThermalManagementKeywords:Delta-Sigma,analogtodigitalconverters,ADCs,AtoD,A/D,oversampling,noiseshaping,decimation,decimationfilters,Jan31,2003MAX1402,thermocouplemeasurement,RTD,resistancetemperaturedetectors,4-20mA,4-20mAtrnasmitterAPPLICATIONNOTE1870DemystifyingDelta-SigmaADCsAbstract:Thisin-deptharticlecoversthetheorybehindaDelta-Sigmaanalog-to-digitalconverter(ADC).Itspecificallyfocusesonthedifficulttounderstandkeydigitalconceptsofover-sampling,noiseshaping,anddecimationfiltering.Adescriptionofnewconverter,theMAX1402,andseveralapplicationsforDelta-Sigmaconvertersareincluded.Sigma-deltaconvertersofferhighre