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Analog Devices Inc. ADUM6423ABRNZ5
- Part No.:
- ADUM6423ABRNZ5
- Manufacturer:
- Analog Devices Inc.
- Category:
- Digital Isolators
- Package:
- 28-BSSOP (0.295", 7.50mm Width)
- Datasheet:
-
ADUM6423ABRNZ5.pdf
- Description:
- DGTL ISO 5KV 4CH GEN PRP 28SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,859
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Product details
Overview
ADUM6423ABRNZ5 from Analog Devices is a quad-channel digital isolator with integrated isoPower® DC-to-DC converter, delivering 100 mA isolated output at 5 V or 3.3 V, supporting up to 100 Mbps signal isolation, and qualified to AEC-Q100 for automotive on-board chargers and isolated sensor interfaces.
For engineers reviewing the ADUM6423ABRNZ5 datasheet, ADUM6423ABRNZ5 pinout, ADUM6423ABRNZ5 application, or ADUM6423ABRNZ5 equivalent, this device is selected for high-speed, high-CMTI (100 kV/µs), low-EMI isolated power and data transfer in space-constrained 28-lead SOIC designs requiring regulatory compliance (UL 5000 Vrms, IEC 62368-1) and thermal robustness to 125°C.
Technical Context
The ADUM6423ABRNZ5 implements iCoupler® chip-scale transformer technology for both signal isolation and magnetic DC-DC conversion, eliminating external isolated power supplies. Its architecture integrates four unidirectional data channels - three from primary (VDD1) to secondary (VISO) side and one reverse-direction channel - with independent UVLO thresholds per supply domain.
It supports multiple input/output voltage combinations: 5 V/5 V, 5 V/3.3 V, and 3.3 V/3.3 V, with output current derated above 85°C (1.75 mA/°C). The integrated converter operates at 625 kHz PWM frequency and 180 MHz switching frequency, meeting CISPR 32 Class B emissions on 2-layer PCBs at full load.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Data Rate | 100 Mbps - enables high-speed SPI, RS-232, and gate drive signaling without timing bottlenecks |
| Isolated Output Current | 100 mA @ 5 V or 3.3 V - powers downstream isolated circuitry (e.g., ADCs, transceivers) without external DC-DC |
| Common-Mode Transient Immunity | 100 kV/µs - ensures reliable operation in noisy motor drives and OBC systems with fast-switching power stages |
| Propagation Delay | 7–15 ns - supports tight-timing control loops in real-time industrial and automotive feedback systems |
| Regulatory Approvals | UL 5000 Vrms (1 min), IEC 62368-1, IEC 61010-1, VIORM = 566 V peak - meets reinforced insulation requirements for functional safety |
| Operating Temperature | −40°C to +125°C - validated for under-hood automotive and industrial PLC environments |
| Package | 28-lead SOIC (wide-body, 8.3 mm creepage) - provides certified spacing for high-voltage isolation barriers |
Pinout & Package
ADUM6423ABRNZ5 uses a 28-lead, wide-body SOIC package (SOIC_W) with minimum 8.3 mm creepage distance, optimized for reinforced isolation in high-voltage applications. Pin assignments are defined per Figure 19 (Pin Configurations) of Rev. C datasheet.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD1 | Primary-side supply input | Provides power to input-side logic and isolation drivers; accepts 3.0–5.5 V |
| VISO | Secondary-side isolated supply output | Regulated 3.3 V or 5 V output (configurable by part variant); powers isolated-side circuitry |
| GND1 | Primary-side ground reference | Return path for VDD1; must be separated from GND2 by isolation barrier |
| GND2 | Secondary-side ground reference | Return path for VISO; galvanically isolated from GND1 |
| INA, INB, INC | Input channels A/B/C (VDD1 → VISO) | Three forward-direction digital inputs; compatible with CMOS/LVTTL levels |
| IND | Input channel D (VISO → VDD1) | Single reverse-direction input; enables bidirectional communication control |
| OUTA, OUTB, OUTC | Output channels A/B/C (VDD1 → VISO) | Isolated outputs referenced to GND2; drive loads up to 3.2 mA |
| OUTD | Output channel D (VISO → VDD1) | Reverse-direction output referenced to GND1; completes full-duplex capability |
Key Features
| Feature | Design Value |
|---|---|
| Integrated isoPower DC-DC converter | Eliminates need for external isolated power supply, reducing BOM count and board area in 500 mW-class isolated systems |
| AEC-Q100 qualification | Validated for automotive-grade reliability (Grade 1: −40°C to +125°C), enabling use in OBC, battery management, and traction inverters |
| CISPR 32 Class B compliance | Meets radiated emission limits on 2-layer PCBs with ferrites - simplifies EMI filtering and certification effort |
| 100 kV/µs CMTI | Prevents data corruption during fast dv/dt events in SiC/GaN-based power converters and motor drives |
| Four independent isolation channels | Supports asymmetric data flow: 3 forward + 1 reverse - ideal for isolated UART, SPI, and PWM feedback architectures |
| Reinforced insulation rating | UL 5000 Vrms, VIORM = 566 V peak, and IEC 62368-1 certification enable single-package safety compliance in medical and industrial equipment |
Applications
| Automotive On-Board Charger (OBC) | Isolated Sensor Interface |
|---|---|
|
Use Scenario: Isolating MCU-controlled PWM signals and feedback sensing between high-voltage DC bus and low-voltage control domain in bidirectional OBCs. IC Role / Device Role / Timing Role: Provides galvanic isolation for gate drivers and voltage/current sense amplifiers while powering them via integrated VISO. Use Value: Enables compact, certified 500 mW isolated power + data solution that meets AEC-Q100 and CISPR 32 Class B without external DC-DC or complex filtering. |
Use Scenario: Interfacing isolated temperature, current, or position sensors to host microcontrollers in industrial motor drives. IC Role / Device Role / Timing Role: Transfers digitized sensor data across isolation barrier while supplying regulated power to sensor front-end ASICs. Use Value: Delivers 100 Mbps throughput and 100 kV/µs CMTI to maintain accuracy amid high-noise switching environments, reducing system latency vs. optocoupler-based alternatives. |
| Industrial PLC Digital I/O Module | RS-232 Transceiver Isolation |
|
Use Scenario: Isolating digital input/output lines in modular PLC backplanes where field-side voltages may reach ±60 V. IC Role / Device Role / Timing Role: Acts as four-channel isolator with integrated power for driving isolated LED indicators, relays, and status reporting circuits. Use Value: Supports 125°C operation and reinforced insulation to meet IEC 61010-1 requirements for industrial measurement equipment with extended service life. |
Use Scenario: Breaking ground loops and protecting host UART peripherals from fault currents in legacy RS-232 communication links. IC Role / Device Role / Timing Role: Isolates TX/RX/RTS/CTS lines while powering the RS-232 transceiver IC on the line side using VISO output. Use Value: Integrates power and signal isolation into one 28-pin SOIC, replacing discrete isolators + isolated DC-DC and reducing layout complexity and cost. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad-channel isolated power and data applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADUM6421ABRNZ5 | 3 forward + 1 reverse channel; same package and isolation specs, but lower quiescent current (IDD1(Q) = 0.5 mA @ logic 0) and reduced VISO load capability (60 mA @ 3.3 V) | Better suited for ultra-low-power sensor nodes where isolated supply current < 60 mA suffices | Select when lower standby power and smaller isolated load are acceptable trade-offs for cost-sensitive designs |
| SI8642ED-B-IS | Quad-channel isolator only - no integrated DC-DC; requires external isolated power supply; higher max data rate (150 Mbps); different pinout (16-pin SOIC) | Used where higher speed or multi-rail isolated power already exists; not drop-in replaceable due to missing VISO generation | Choose when system-level power architecture already includes isolated DC-DC, and higher bandwidth or smaller footprint is prioritized over integration |
Compared with ADUM6421ABRNZ5 and SI8642ED-B-IS, the ADUM6423ABRNZ5 uniquely combines 100 mA isolated power delivery, AEC-Q100 qualification, and 100 kV/µs CMTI in a single 28-pin SOIC - making it optimal for space-constrained automotive and industrial systems requiring self-powered isolation without layout redesign.
Availability
ADUM6423ABRNZ5 is available at Aetrix Electronics and suitable for automotive on-board chargers, isolated sensor interfaces, and industrial PLC modules requiring stable component supply, long-term lifecycle support, and regulatory-compliant isolation performance.
Supply support for ADUM6423ABRNZ5 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Analog Devices, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving precision instrumentation, industrial automation, and automotive markets.
The ADUM6423ABRNZ5 belongs to the ADuM642xA family of isoPower-enabled digital isolators, designed specifically to replace optocouplers and discrete isolation + DC-DC solutions in high-reliability, high-noise, and safety-critical applications.
FAQ
What is the maximum isolated output current supported by the ADUM6423ABRNZ5?
The ADUM6423ABRNZ5 delivers up to 100 mA of regulated isolated output current at either 5 V or 3.3 V. This current is derated linearly by 1.75 mA/°C above 85°C ambient temperature, maintaining usable output down to 30 mA at 125°C. The specification is verified under full-load conditions on a 2-layer PCB with recommended bulk capacitance (0.1 µF || 10 µF).
Does the ADUM6423ABRNZ5 support bidirectional data transmission?
Yes, the ADUM6423ABRNZ5 supports asymmetric bidirectional communication: three unidirectional channels (INA→OUTA, INB→OUTB, INC→OUTC) operate from primary (VDD1) to secondary (VISO) side, and one reverse-direction channel (IND→OUTD) operates from secondary to primary side. This configuration enables full-duplex control signaling such as isolated UART handshaking or PWM feedback loops.
What safety certifications apply to the ADUM6423ABRNZ5?
The ADUM6423ABRNZ5 carries UL recognition (5000 Vrms for 1 minute per UL 1577), CSA certification to IEC 62368-1, IEC 61010-1, and IEC 60601-1, and pending VDE V 0884-11 and CQC GB4943.1-2011 approvals. Its VIORM rating is 566 V peak, satisfying reinforced insulation requirements for functional safety in industrial and medical applications.
Can the ADUM6423ABRNZ5 operate with a 3.3 V primary supply?
Yes, the ADUM6423ABRNZ5 supports 3.3 V primary (VDD1) operation with either 3.3 V or 5 V isolated output (VISO), as specified in Tables 4 and 2 of the datasheet. At 3.3 V/3.3 V operation, maximum isolated output current is 60 mA (derated to 20 mA at 125°C), and total supply current remains within validated thermal limits for the 28-lead SOIC package.
How does the ADUM6423ABRNZ5 achieve CISPR 32 Class B compliance?
The ADUM6423ABRNZ5 meets CISPR 32 Class B radiated emission limits at full load on a standard 2-layer PCB when used with two external ferrite beads (as shown in Figure 42 of the datasheet). Its integrated isoPower converter employs spread-spectrum modulation and optimized transformer coupling to suppress common-mode noise, eliminating the need for complex shielding or multi-stage filtering typically required with discrete DC-DC + isolator solutions.
ADUM6423ABRNZ5 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- IsoPower®, iCoupler®
- Package/Case:
- 28-BSSOP (0.295", 7.50mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Technology:
- Magnetic Coupling
- Type:
- General Purpose
- Isolated Power:
- Yes
- Number of Channels:
- 4
- Inputs - Side 1/Side 2:
- 1/3
- Channel Type:
- Unidirectional
- Voltage - Isolation:
- 5000Vrms
- Common Mode Transient Immunity (Min):
- 75kV/µs
- Data Rate:
- 100Mbps
- Propagation Delay tpLH / tpHL (Max):
- 17ns, 17ns
- Pulse Width Distortion (Max):
- 5ns
- Rise / Fall Time (Typ):
- 2.5ns, 2.5ns
- Voltage - Supply:
- 1.7V ~ 5.5V
- Grade:
- -
- Qualification:
- -
- Operating Temperature:
- -40°C ~ 125°C
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 28-SOIC-W-FP
ADUM6423ABRNZ5 FAQ
1.How can I place an order for ADUM6423ABRNZ5 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADUM6423ABRNZ5 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for ADUM6423ABRNZ5 reliable?
The price and inventory of ADUM6423ABRNZ5 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADUM6423ABRNZ5 is usually 5 days.
3.What payment methods are accepted for ADUM6423ABRNZ5?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADUM6423ABRNZ5 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADUM6423ABRNZ5?
ADUM6423ABRNZ5 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADUM6423ABRNZ5 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for ADUM6423ABRNZ5?
For technical support, including ADUM6423ABRNZ5 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADUM6423ABRNZ5 requirements.
6.How does Aetrix verify that ADUM6423ABRNZ5 is sourced from the original manufacturer or authorized distributors?
All ADUM6423ABRNZ5 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that ADUM6423ABRNZ5 meets industry standards.
7.What is the process for return or replacement of ADUM6423ABRNZ5?
All ADUM6423ABRNZ5 units undergo pre-shipment inspection (PSI). If there is an issue with ADUM6423ABRNZ5, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The ADUM6423ABRNZ5 part is unused and in its original packaging.
Return procedure for ADUM6423ABRNZ5:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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