Quad-Channel Isolators with Integrated DC-to-DC Converter Data Sheet ADuM6420A/ADuM6421A/ADuM6422A FEATURES FUNCTIONAL BLOCK DIAGRAM isoPower integrated, isolated dc-to-dc converter V 1 28 V DD1 DD2 100 mA output supply GND 2 27 GND 1 2 Meets CISPR 32/EN55032 Class B emission limits up to 3 26 GND GND 1 2 5 Mbps at a full load on a 2-layer PCB V 4 25 V Quad dc to 100 Mbps signal isolation channels IA 4-CHANNEL iCoupler CORE OA LOW POWER ON-OFF KEYING 28-lead, fine pitch, SOIC with 8.3 mm minimum creepage V 5 24 V IB OB ADuM6420A/ High temperature operation: 125C maximum V /V ADuM6421A/ V /V 6 23 IC OC OC IC ADuM6422A High common-mode transient immunity: 100 kV/s V /V 7 22 V /V ID OD OD ID Safety and regulatory approvals (pending) LOW RADIATED EMISSIONS DC TO DC 21 GND 8 GND 1 2 UL recognition (pending) PDIS 9 PCS 20 V SEL 5000 V rms for 1 minute per UL 1577 GND 10 19 GND 1 ISO CSA Component Acceptance Notice 5A (pending) V 11 OSC RECT REG 18 V VDE V 0884-11 certificate of conformity (pending) DDP ISO V = 566 V peak IORM GND 12 17 GND ISO 1 NIC 13 16 NIC APPLICATIONS GND 14 15 GND 1 ISO RS-232 transceivers Power supply start-up bias and gate drives NIC = NO INTERNAL CONNECTION. LEAVE THIS PIN FLOATING. Isolated sensor interfaces Figure 1. Industrial programmable logic controllers (PLCs) GENERAL DESCRIPTION 1 The ADuM6420A/ADuM6421A/ADuM6422A are quad-channel The ADuM6420A/ADuM6421A/ADuM6422A isolators digital isolators with an isoPower, integrated, isolated dc-to-dc provide four independent isolation channels (see the Pin converter. Based on the Analog Devices, Inc., iCoupler Configurations and Function Descriptions for additional technology, the dc-to-dc converter provides regulated, isolated information). power that meets CISPR 32/EN 55032 Class B limits at a full Table 1. ADuM6420A/ADuM6421A/ADuM6422A Output load on a 2-layer printed circuit board (PCB) with ferrites. Current Levels Popular voltage combinations and the associated output ISO Current, I (mA) ISO current levels are listed in Table 1. VDDP (V) VISO (V) 85C 105C 125C The ADuM6420A/ADuM6421A/ADuM6422A eliminate the 5 5 100 65 30 need for a separate, isolated dc-to-dc converter in 500 mW, 5 3.3 100 65 30 isolated designs. The iCoupler chip scale transformer technology 3.3 3.3 60 60 20 is used for isolated logic signals and for the magnetic components of the dc-to-dc converter. The result is a small form factor, total isolation solution. 1 Protected by U.S. Patents 5,952,849 6,873,065 6,903,578 and 7,075,329. Other patents are pending. Rev. A Document Feedback Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. rights of third parties that may result from its use. Specifications subject to change without notice. Tel: 781.329.4700 20192020 Analog Devices, Inc. All rights reserved. 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Trademarks and registered trademarks are the property of their respective owners. 21365-001ADuM6420A/ADuM6421A/ADuM6422A Data Sheet TABLE OF CONTENTS Features .............................................................................................. 1 Insulation and Safety Related Specifications .......................... 11 Applications ...................................................................................... 1 DIN V VDE V 0884-11 Insulation Characteristics ............... 12 Functional Block Diagram .............................................................. 1 Recommended Operating Conditions .................................... 12 General Description ......................................................................... 1 Absolute Maximum Ratings ......................................................... 13 Revision History ............................................................................... 2 ESD Caution ............................................................................... 13 Specifications .................................................................................... 3 Pin Configurations and Function Descriptions ......................... 14 Electrical Characteristics5 V Primary Input Supply/5 V Truth Table ................................................................................. 17 Secondary Isolated Supply .......................................................... 3 Typical Performance Characteristics .......................................... 18 Electrical Characteristics5 V Primary Input Supply/3.3 V Terminology .................................................................................... 21 Secondary Isolated Supply .......................................................... 3 Theory of Operation ...................................................................... 22 Electrical Characteristics3.3 V Primary Input Supply/3.3 V Applications Information ............................................................. 23 Secondary Isolated Supply .......................................................... 4 PCB Layout ................................................................................. 23 Electrical Characteristics5.0 V Operation Digital Isolator Channels Only .............................................................................. 4 Thermal Analysis ....................................................................... 24 Electrical Characteristics3.3 V Operation Digital Isolator Propagation Delay Related Parameters ................................... 24 Channels Only .............................................................................. 6 EMI Considerations ................................................................... 24 Electrical Characteristics2.5 V Operation Digital Isolator Power Consumption .................................................................. 24 Channels Only .............................................................................. 8 Insulation Lifetime ..................................................................... 24 Electrical Characteristics1.8 V Operation Digital Isolator Outline Dimensions ....................................................................... 26 Channels Only .............................................................................. 9 Ordering Guide .......................................................................... 26 Package Characteristics ............................................................. 11 Regulatory Approvals ................................................................ 11 REVISION HISTORY 12/2020Rev. 0 to Rev. A Changes to Table 11 and Table 13 .................................................. 8 Changes to Table 14 .......................................................................... 9 Changes to Table 1 ........................................................................... 1 Changes to Electrical Characteristics5 V Primary Input Changes to Table 21 ....................................................................... 12 Supply/5 V Secondary Isolated Supply Section ............................ 3 Changes to Table 23 ....................................................................... 13 Moved Electrical Characteristics5 V Primary Input Change to Table 24 ........................................................................ 14 Supply/3.3 V Secondary Isolated Supply Section and Table 6 Change to Table 25 ........................................................................ 15 Renumbered Sequentially ............................................................... 3 Change to Table 26 ........................................................................ 16 Added Electrical Characteristics3.3 V Primary Input Changes to Table 28 ....................................................................... 17 Supply/3.3 V Secondary Isolated Supply Section, Table 4, Changes to Figure 6, Figure 7, and Figure 8 ............................... 18 Changes to PCB Layout Section, Figure 22, and Figure 23 ...... 23 Electrical Characteristics5.0 V Operation Digital Isolator Channels Only Section, and Table 5 .............................................. 4 Change to Thermal Analysis Section .......................................... 24 Changes to Ordering Guide .......................................................... 26 Changes to Table 7 ........................................................................... 5 Removed Table 7 and Table 8 ......................................................... 6 12/2019Revision 0: Initial Version Changes to Table 8 ........................................................................... 6 Removed Table 9 .............................................................................. 7 Changes to Table 10 ......................................................................... 7 Rev. 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