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Analog Devices Inc. ADUM321N0WBRIZ-RL
- Part No.:
- ADUM321N0WBRIZ-RL
- Manufacturer:
- Analog Devices Inc.
- Category:
- Digital Isolators
- Package:
- 8-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
ADUM321N0WBRIZ-RL.pdf
- Description:
- IC, ROBUST DUAL ISO 2:1
- Quantity:
- Payment:
- Shipping:
Inventory:1,222
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Product details
Overview
ADUM321N0WBRIZ-RL from Analog Devices is a dual-channel, reinforced digital isolator with 5.7 kVRMS isolation rating, 150 Mbps guaranteed data rate, and fail-safe low (N0) output logic state. It features 6.2 ns typical propagation delay at 5 V, 2.25–5.5 V supply voltage range per side, and operates from −40°C to +125°C for industrial motor control and power supply feedback loops.
For engineers reviewing the ADUM321N0WBRIZ-RL datasheet, ADUM321N0WBRIZ-RL pinout, ADUM321N0WBRIZ-RL application, or ADUM321N0WBRIZ-RL equivalent, this page delivers verified specifications, SOIC_N (R-8) package mapping, functional block context, real-world use cases in PWM isolation and inverter gate drive, and two validated alternative parts with documented technical and application differences.
Technical Context
The ADUM321N0WBRIZ-RL implements iCoupler® monolithic air-core transformer technology with CMOS interface circuitry on both sides, enabling galvanic signal transfer without optocoupler degradation or magnetic saturation. Its dual independent channels support bidirectional or unidirectional configurations, with channel matching ≤3.0 ns and pulse width distortion <3 ns at 5 V.
It integrates undervoltage lockout (UVLO) with 2.2 V enable threshold and 0.2 V hysteresis on both VDD1 and VDD2 rails, plus ±8 kV IEC 61000-4-2 ESD protection across the isolation barrier and ±4 kV HBM on I/O pins. The device meets DIN EN IEC 60747-17 (VDE 0884-17) reinforced insulation requirements for VIORM = 636 VPEAK in SOIC_N (R-8) packaging.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Data Rate | 150 Mbps maximum - supports high-speed PWM and serial communication in servo drives and DC-DC controllers |
| Propagation Delay | 6.2 ns typical (10 ns max) at 5 V - enables precise timing-critical feedback in isolated gate drivers |
| Isolation Rating | 5.7 kVRMS (VIORM = 636 VPEAK) - certified reinforced insulation for 300–600 V AC mains-connected systems |
| Supply Range | 2.25 V to 5.5 V per side - allows level translation between 3.3 V microcontrollers and 5 V analog front-ends |
| Fail-Safe Output | Low (N0) - outputs default to logic low during input-side power loss, critical for safe shutdown in motor inverters |
| Common-Mode Immunity | 180 kV/µs typical - maintains signal integrity in noisy industrial environments with fast-switching SiC/GaN power stages |
| Operating Temperature | −40°C to +125°C - qualified for under-hood automotive and industrial ambient conditions |
Pinout & Package
ADUM321N0WBRIZ-RL uses an 8-lead narrow-body SOIC_N (R-8) package with creepage/clearance ≥3.5 mm and reinforced insulation per DIN EN IEC 60747-17. Pin 1–4 form the input side (VDD1 domain); pins 5–8 form the output side (VDD2 domain).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 (VDD1) | Input-side power supply | Supplies 2.25–5.5 V to input logic and transformer driver; UVLO active below 2.2 V |
| Pin 2 (GND1) | Input-side ground reference | Return path for VDD1; must be separated from GND2 by isolation barrier |
| Pin 3 (INA) | Channel A input | CMOS-compatible digital input; hysteresis ensures noise immunity against slow-rising signals |
| Pin 4 (INB) | Channel B input | Independent second input; supports dual PWM or status signal isolation |
| Pin 5 (OUTA) | Channel A output | Fail-safe low (N0): defaults to logic low when VDD1 is absent or UVLO triggered |
| Pin 6 (OUTB) | Channel B output | Fail-safe low (N0): synchronized behavior with OUTA under fault conditions |
| Pin 7 (GND2) | Output-side ground reference | Return path for VDD2; forms isolated domain with VDD2 and outputs |
| Pin 8 (VDD2) | Output-side power supply | Supplies 2.25–5.5 V to output logic and receiver; independent of VDD1 |
Key Features
| Feature | Design Value |
|---|---|
| iCoupler® transformer isolation | Monolithic air-core transformers eliminate LED aging and CMTI drift-enabling >10-year reliability in continuous operation |
| 150 Mbps data rate with <3 ns PWD | Supports high-resolution PWM (e.g., 100 kHz carrier with 10-bit resolution) without timing skew-induced distortion |
| 636 VPEAK VIORM (SOIC_N) | Meets reinforced insulation requirements for 300 VRMS mains applications per IEC 62368-1 and IEC 61010-1 |
| Fail-safe N0 logic state | Guarantees safe system state during primary-side power failure-critical for ISO 13849-compliant safety circuits |
| −40°C to +125°C operation | Validated junction temperature range enables placement near power modules without derating |
Applications
| Industrial Inverter Control | PWM Signal Isolation |
|---|---|
|
Use Scenario: Isolating gate drive signals from MCU in 3-phase motor inverters using SiC MOSFETs. IC Role / Device Role / Timing Role: Dual-channel isolator transmitting complementary PWM signals (CH A/B) across 5.7 kVRMS barrier with <3 ns channel matching. Use Value: Prevents ground loop noise from disrupting gate timing, enabling stable 100 kHz switching with <1% duty cycle error. |
Use Scenario: Transmitting isolated feedback pulses from current-sense ADCs to isolated DC-DC controller ICs. IC Role / Device Role / Timing Role: High-speed digital isolator carrying 50 Mbps pulse-width modulated status signals with 6.2 ns propagation delay. Use Value: Enables real-time overcurrent response within 20 ns, reducing fault energy by >40% compared to optocoupler-based designs. |
| Power Supply Feedback Loop | Industrial Fieldbus Interface |
|
Use Scenario: Isolating error amplifier output in isolated flyback or forward converters to maintain regulation across primary-secondary boundary. IC Role / Device Role / Timing Role: Dual-channel isolator conveying analog-derived PWM or digital control bits with fail-safe low (N0) default on loss of primary power. Use Value: Ensures regulated output collapses safely during primary-side brownout, preventing secondary-side overvoltage damage. |
Use Scenario: Isolating RS-485 transceiver data lines in PROFIBUS DP nodes deployed in factory automation cabinets. IC Role / Device Role / Timing Role: Dual-channel isolator separating controller UART TX/RX from bus-side transceiver, rated for 150 Mbps burst traffic. Use Value: Eliminates ground potential differences up to 1 kV while maintaining 250 kbps full-duplex communication integrity in electrically noisy plants. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-channel digital isolator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADUM321N1WBRIZ-RL | Fail-safe high (N1) output logic instead of N0; identical pinout, specs, and package | Required where system safety mandates default-high outputs during power loss (e.g., enable signals) | Select N1 variant only if control logic requires active-high fail-safe behavior; otherwise N0 matches ADUM321N0WBRIZ-RL |
| SI8621ED-B-IS | Capacitive isolation; 5 kVRMS, 150 Mbps, SOIC-8; no integrated UVLO hysteresis or 125°C rating | Suitable for commercial-grade 85°C ambient applications but not automotive or extended-temp industrial use | Use SI8621ED-B-IS only in cost-sensitive, non-safety-critical designs with <85°C ambient and no UVLO dependency |
Compared with ADUM321N0WBRIZ-RL, the N1 variant offers identical performance with inverted fail-safe polarity, while SI8621ED-B-IS trades thermal robustness and integrated UVLO for lower unit cost in less demanding environments.
Availability
ADUM321N0WBRIZ-RL is available at Aetrix Electronics and suitable for industrial motor drives, isolated DC-DC power supplies, and automotive inverter control systems requiring stable component supply, long-term lifecycle assurance, and AEC-Q100-compliant sourcing.
Supply support for ADUM321N0WBRIZ-RL 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, headquartered in Wilmington, MA.
The ADuM321N family belongs to Analog Devices' iCoupler® digital isolator product line, designed specifically for high-reliability, high-speed signal isolation in industrial automation, renewable energy inverters, and automotive electrification systems.
FAQ
What is the isolation voltage rating of ADUM321N0WBRIZ-RL?
ADUM321N0WBRIZ-RL provides 5.7 kVRMS isolation per UL 1577 and reinforced insulation with VIORM = 636 VPEAK per DIN EN IEC 60747-17, validated in the SOIC_N (R-8) package. This rating applies to continuous working voltage up to 450 VRMS and transient surges up to 4242 VPEAK, making it suitable for 300–600 V AC mains-connected equipment.
Does ADUM321N0WBRIZ-RL support level translation between different supply voltages?
Yes, ADUM321N0WBRIZ-RL supports independent 2.25 V to 5.5 V supplies on VDD1 and VDD2, enabling seamless level translation-for example, isolating a 3.3 V FPGA output to a 5 V gate driver input. Input thresholds scale with VDDx (VIH = 0.7×VDDx), and outputs swing rail-to-rail relative to their respective VDD.
What does the "N0" suffix indicate in ADUM321N0WBRIZ-RL?
The "N0" suffix denotes fail-safe low output logic: when VDD1 is unpowered or drops below UVLO threshold (2.2 V), both OUTA and OUTB transition to and hold logic low. This behavior is critical for safety-critical systems like motor inverters, where unintended high-side turn-on must be prevented during primary-side faults.
Is ADUM321N0WBRIZ-RL qualified for automotive applications?
Yes, ADUM321N0WBRIZ-RL is AEC-Q100 qualified for Grade 1 (−40°C to +125°C) operation and meets automotive EMC and reliability requirements. It is commonly used in battery management systems (BMS), on-board chargers (OBC), and traction inverter control units where reinforced isolation and fail-safe behavior are mandated.
How does ADUM321N0WBRIZ-RL compare to optocouplers in terms of speed and longevity?
ADUM321N0WBRIZ-RL achieves 150 Mbps data rate and 6.2 ns propagation delay-over 100× faster than standard optocouplers-with no LED aging or CMTI degradation. Its monolithic transformer structure guarantees >50-year lifetime under rated conditions, eliminating the 10–15 year wear-out mechanisms inherent in optocoupler LEDs and photodiodes.
ADUM321N0WBRIZ-RL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 8-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Magnetic Coupling
- Type:
- General Purpose
- Isolated Power:
- Yes
- Number of Channels:
- 2
- Inputs - Side 1/Side 2:
- 2/0
- Channel Type:
- Unidirectional
- Voltage - Isolation:
- 5700Vrms
- Common Mode Transient Immunity (Min):
- 100kV/µs
- Data Rate:
- 150Mbps
- Propagation Delay tpLH / tpHL (Max):
- 10ns, 10ns
- Pulse Width Distortion (Max):
- 3ns
- Rise / Fall Time (Typ):
- 2.5ns, 2.5ns
- Voltage - Supply:
- 2.25V ~ 5.5V
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Operating Temperature:
- -40°C ~ 125°C
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC-IC
ADUM321N0WBRIZ-RL FAQ
1.How can I place an order for ADUM321N0WBRIZ-RL through Aetrix?
Please submit a Request for Quotation (RFQ) for ADUM321N0WBRIZ-RL 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 ADUM321N0WBRIZ-RL reliable?
The price and inventory of ADUM321N0WBRIZ-RL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADUM321N0WBRIZ-RL is usually 5 days.
3.What payment methods are accepted for ADUM321N0WBRIZ-RL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADUM321N0WBRIZ-RL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADUM321N0WBRIZ-RL?
ADUM321N0WBRIZ-RL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADUM321N0WBRIZ-RL 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 ADUM321N0WBRIZ-RL?
For technical support, including ADUM321N0WBRIZ-RL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADUM321N0WBRIZ-RL requirements.
6.How does Aetrix verify that ADUM321N0WBRIZ-RL is sourced from the original manufacturer or authorized distributors?
All ADUM321N0WBRIZ-RL 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 ADUM321N0WBRIZ-RL meets industry standards.
7.What is the process for return or replacement of ADUM321N0WBRIZ-RL?
All ADUM321N0WBRIZ-RL units undergo pre-shipment inspection (PSI). If there is an issue with ADUM321N0WBRIZ-RL, 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 ADUM321N0WBRIZ-RL part is unused and in its original packaging.
Return procedure for ADUM321N0WBRIZ-RL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ADUM321N0WBRIZ-RL Tags
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ISO1212DBQR
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ISO6721BDR
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SI8710AC-B-ISR
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ISO7720FDR
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ISO7721DR
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ISO7721FDR
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SI8710CC-B-ISR
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ISO6741FQDWRQ1
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ISO7741FDWR
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