Data SheetADuM4470/ADuM4471/ADuM4472/ADuM4473/ADuM4474BLOCK DIAGRAMS OF I/O CHANNELSADuM4470ADuM4473 002 005 10991- 10991- Figure 2. ADuM4470 Figure 5. ADuM4473 ADuM4471ADuM4474 003 006 10991- 10991- Figure 3. ADuM4471 Figure 6. ADuM4474 ADuM4472 004 10991- Figure 4. ADuM4472 Rev. 0 | Page 3 of 36 Document Outline Features Applications Functional Block Diagram General Description Revision History Block Diagrams of I/O Channels Specifications Electrical Characteristics—5 V Primary Input Supply/5 V Secondary Isolated Supply Electrical Characteristics—3.3 V Primary Input Supply/3.3 V Secondary Isolated Supply Electrical Characteristics—5 V Primary Input Supply/3.3 V Secondary Isolated Supply Electrical Characteristics—5 V Primary Input Supply/15 V Secondary Isolated Supply Package Characteristics Regulatory Approvals (Pending) Insulation and Safety-Related Specifications DIN V VDE V 0884-10 (VDE V 0884-10) Insulation Characteristics Recommended Operating Conditions Absolute Maximum Ratings ESD Caution Pin Configurations and Function Descriptions Typical Performance Characteristics Applications Information Theory of Operation Application Schematics Transformer Design Transformer Turns Ratio Transformer ET Constant Transformer Primary Inductance and Resistance Transformer Isolation Voltage Switching Frequency Transient Response Component Selection Printed Circuit Board (PCB) Layout Thermal Analysis Propagation Delay-Related Parameters DC Correctness and Magnetic Field Immunity Power Consumption Power Considerations Soft Start Mode and Current-Limit Protection Data Channel Power Cycle Insulation Lifetime Outline Dimensions Ordering Guide