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Abstract:AninterfacecircuitusestheDallasSemiconductor1-Wireserialbustoprovideisolatedpowerandbidirectionalcommunicationsbetweenamaster(MCU)andasensingelement.Mar23,2006Abstract:AninterfacecircuitusestheDallasSemiconductor1-Wireserialbustoprovideisolatedpowerandbidirectionalcommunicationsbetweenamaster(MCU)andasensingelement.Medicalandindustrialapplicationsoftenrequiregalvanicisolationof2500VACorhigherforthesafetyofpatientsandequipmentoperators.Theisolationbarrierconveysnotonlypowertothesensingelement,butalsodatatoorfromthatelement.Eachdatasignalcrossingthebarrierrequiresisolation,soonetypicallysavescostsintheseapplicationsbychoosingaserialbusratherthanaparallelbus.SerialbusesincludeSPI,IC,andtheDallas1-Wirebus.TheDallasSemiconductor1-Wirerequiresonlyasingledataline(plusground)forbidirectionalcommunications.Becauseopto-isolators……