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Analog Devices Inc. ADUM3211WBRZ-RL7
- Part No.:
- ADUM3211WBRZ-RL7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Digital Isolators
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
ADUM3211WBRZ-RL7.pdf
- Description:
- DGTL ISO 2500VRMS 2CH GP 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,312
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Product details
Overview
ADUM3211WBRZ-RL7 from Analog Devices is a dual-channel, automotive-grade digital isolator based on iCoupler® transformer technology, providing reinforced isolation up to 2500 VRMS with default-low output logic and 25 Mbps data rate. It operates across 3.3 V or 5 V supplies on either side, enabling bidirectional level translation and supporting high-temperature operation up to 125°C in motor drive and battery monitoring systems.
For engineers reviewing the ADUM3211WBRZ-RL7 datasheet, ADUM3211WBRZ-RL7 pinout, ADUM3211WBRZ-RL7 application, or ADUM3211WBRZ-RL7 equivalent, key selection criteria include its 25 kV/µs common-mode transient immunity, pulse width distortion ≤4 ns at 125°C, VDE 0884-17 reinforced insulation certification, and automotive qualification per AEC-Q100 (Grade 0).
Technical Context
The ADUM3211WBRZ-RL7 implements two independent unidirectional isolation channels using monolithic air-core transformers, eliminating LED-based optocoupler limitations. Its architecture supports mixed-voltage operation (e.g., 3.3 V input / 5 V output), precise timing control, and failsafe default-low output state-distinct from ADUM3210's identical pinout but opposite default logic.
It delivers enhanced system-level ESD robustness per IEC 61000-4-x and meets DIN EN IEC 60747-17 (VDE 0884-17) for reinforced insulation with VIORM = 560 VPEAK. Propagation delay skew is ≤22 ns (codirectional) and ≤20 ns (opposing directional) at 125°C, ensuring deterministic timing in safety-critical gate drive interfaces.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Data Rate | DC to 25 Mbps (NRZ) - enables real-time SPI and RS-485 isolation without protocol overhead |
| Isolation Rating | 2500 VRMS for 1 minute (UL 1577), 560 VPEAK reinforced (VDE 0884-17) - certified for functional safety in automotive powertrain |
| Operating Temperature | −40°C to +125°C - qualified for under-hood EV battery monitors and motor controllers |
| Pulse Width Distortion | ≤4 ns max at 125°C - preserves signal integrity in high-speed PWM timing paths |
| Common-Mode Transient Immunity | >25 kV/µs - maintains signal fidelity during fast-switching IGBT/MOSFET transients |
| Supply Voltage Range | 3.0–3.6 V or 4.5–5.5 V per side - supports mixed-voltage system partitioning and level translation |
| Power Consumption | ≤6.4 mA per channel at 10 Mbps / 5 V - reduces thermal load in space-constrained automotive modules |
Pinout & Package
Narrow-body, RoHS-compliant 8-lead SOIC package (SOIC_N-8), 5.3 mm × 6.2 mm footprint, 1.75 mm height, with creepage/clearance ≥4.0 mm per VDE 0884-17.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3, 4 | Input-side power and signals (VDD1, GND1, IN1, IN2) | VDD1 powers primary-side logic; IN1/IN2 accept CMOS inputs referenced to GND1 |
| 5, 6, 7, 8 | Output-side power and signals (GND2, VDD2, OUT1, OUT2) | VDD2 powers secondary-side logic; OUT1/OUT2 drive CMOS loads referenced to GND2; default-low state ensures safe deactivation on power loss |
Key Features
| Feature | Design Value |
|---|---|
| Automotive qualification | AEC-Q100 Grade 0 (−40°C to +125°C ambient), with production flow traceability for ISO/TS 16949 environments |
| iCoupler® transformer isolation | Eliminates LED aging and CTR drift; achieves 10¹² Ω input-to-output resistance and 1.0 pF capacitance for low noise coupling |
| Default-low output logic | Ensures isolated outputs go LOW during power-up, brown-out, or fault - critical for fail-safe gate driver enable/disable control |
| ESD-enhanced layout | System-level IEC 61000-4-2/4-4/4-5 robustness via optimized internal guard rings and bond wire routing |
| Mixed-supply operation | Supports 3.3 V ↔ 5 V level translation across isolation barrier without external level shifters |
Applications
| Motor Drive Gate Control | SPI Isolation for Battery Management |
|---|---|
|
Use Scenario: Isolating PWM signals from MCU to high-side/low-side IGBT drivers in traction inverters. IC Role / Device Role / Timing Role: Dual-channel unidirectional isolator delivering synchronized, low-skew gate enable/disable commands with <22 ns codirectional matching. Use Value: Prevents ground loop-induced shoot-through while maintaining <4 ns pulse width distortion at 125°C for accurate duty cycle fidelity. |
Use Scenario: Isolating SPI bus between host MCU and multi-cell battery monitor IC (e.g., LTC6813) in EV packs. IC Role / Device Role / Timing Role: Bidirectional data isolator enabling full-duplex SPI clock/data separation with 25 Mbps capability for real-time cell voltage reads. Use Value: Enables 3.3 V MCU to interface with 5 V BMS ICs without level shifters, reducing BOM count and PCB area in compact module designs. |
| RS-485 Transceiver Isolation | Hybrid Vehicle Onboard Charger Interface |
|
Use Scenario: Galvanically isolating RS-485 differential lines in charging station communication modules. IC Role / Device Role / Timing Role: Dual-channel isolator separating TX/RX signal paths from isolated 3.3 V transceiver supply while preserving signal edge rates. Use Value: Achieves >25 kV/µs CMTI to suppress noise coupling from AC/DC converter switching, preventing UART framing errors. |
Use Scenario: Isolating control signals between OBC microcontroller and high-voltage DC-DC stage in PHEV onboard chargers. IC Role / Device Role / Timing Role: Safety-critical isolator for enable, fault reporting, and analog feedback loops requiring reinforced insulation per IEC 62368-1. Use Value: Meets VDE 0884-17 reinforced insulation (560 VPEAK) and UL 1577 (2500 VRMS) for functional safety compliance in 400 V+ systems. |
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 |
|---|---|---|---|
| ADUM3210WBRZ-RL7 | Identical pinout and package, but default-high output logic instead of default-low | Requires logic inversion in fail-safe shutdown paths where LOW = disable | Select ADUM3210WBRZ-RL7 only when system design mandates active-HIGH enable or reset assertion |
| SI8621ED-B-IS | Capacitive isolation; 5000 VRMS rating; 150 Mbps max; no automotive qualification | Lacks AEC-Q100 Grade 0 and VDE 0884-17 reinforced certification for automotive powertrain | Use SI8621ED-B-IS in industrial automation where higher speed is needed but automotive reliability is not required |
Compared with ADUM3211WBRZ-RL7, ADUM3210WBRZ-RL7 offers identical timing and isolation specs but inverted default logic, while SI8621ED-B-IS trades automotive qualification and reinforced insulation for higher bandwidth-making ADUM3211WBRZ-RL7 the sole choice for ASIL-B compliant gate drive and battery monitoring.
Availability
ADUM3211WBRZ-RL7 is available at Aetrix Electronics and suitable for automotive battery management, motor drive gate control, and onboard charger interface applications requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for ADUM3211WBRZ-RL7 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 since 1965.
The ADuM3211W series belongs to Analog Devices' automotive-qualified iCoupler® digital isolator product line, designed specifically for functional safety-critical isolation in electric vehicle power electronics and battery systems.
FAQ
What is the maximum data rate supported by ADUM3211WBRZ-RL7?
ADUM3211WBRZ-RL7 supports a maximum data rate of 25 Mbps in NRZ format, verified across all operating conditions including 125°C ambient and mixed 3.3 V/5 V supply configurations. This enables high-fidelity SPI, RS-485, and PWM signal isolation without timing degradation, as confirmed in Tables 13 and 19 of the Rev. L datasheet.
Does ADUM3211WBRZ-RL7 support level translation between different supply voltages?
Yes, ADUM3211WBRZ-RL7 supports true bidirectional level translation: it operates with 3.3 V on one side and 5 V on the other (or vice versa), as validated in Tables 7, 10, 19, and 22. Input thresholds scale to VDDx (VIH = 0.7×VDDx), and output drive strength adapts to the local VDD, eliminating external level shifters in mixed-voltage systems.
What safety certifications does ADUM3211WBRZ-RL7 hold?
ADUM3211WBRZ-RL7 is certified to UL 1577 (2500 VRMS, 1 min), DIN EN IEC 60747-17 (VDE 0884-17) reinforced insulation (560 VPEAK), IEC/EN/CSA 62368-1, and IEC/CSA 61010-1. These approvals are documented in Table 26 of the datasheet and apply directly to the ADUM3211WBRZ-RL7 variant.
How does the default-low output behavior of ADUM3211WBRZ-RL7 improve system safety?
ADUM3211WBRZ-RL7 asserts LOW on both outputs during power-up, brown-out, or isolation barrier failure-ensuring gate drivers remain disabled and power stages stay off. This fail-safe behavior is intrinsic to the device's architecture and is explicitly differentiated from the ADUM3210W's default-high output in the General Description section (Rev. L, p.3).
Is ADUM3211WBRZ-RL7 qualified for automotive applications?
Yes, ADUM3211WBRZ-RL7 is an automotive-grade part qualified per AEC-Q100 Grade 0 (−40°C to +125°C ambient), with extended temperature testing, process controls, and traceability required for EV powertrain and battery systems. This qualification is stated in the Features section and detailed in the Automotive Products section (Rev. L, p.24).
ADUM3211WBRZ-RL7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Magnetic Coupling
- Type:
- General Purpose
- Isolated Power:
- No
- Number of Channels:
- 2
- Inputs - Side 1/Side 2:
- 1/1
- Channel Type:
- Unidirectional
- Voltage - Isolation:
- 2500Vrms
- Common Mode Transient Immunity (Min):
- 25kV/µs
- Data Rate:
- 10Mbps
- Propagation Delay tpLH / tpHL (Max):
- 50ns, 50ns
- Pulse Width Distortion (Max):
- 3ns
- Rise / Fall Time (Typ):
- 2.5ns, 2.5ns
- Voltage - Supply:
- 3V ~ 5.5V
- Grade:
- Automotive
- Qualification:
- -
- Operating Temperature:
- -40°C ~ 125°C
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
ADUM3211WBRZ-RL7 FAQ
1.How can I place an order for ADUM3211WBRZ-RL7 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADUM3211WBRZ-RL7 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 ADUM3211WBRZ-RL7 reliable?
The price and inventory of ADUM3211WBRZ-RL7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADUM3211WBRZ-RL7 is usually 5 days.
3.What payment methods are accepted for ADUM3211WBRZ-RL7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADUM3211WBRZ-RL7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADUM3211WBRZ-RL7?
ADUM3211WBRZ-RL7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADUM3211WBRZ-RL7 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 ADUM3211WBRZ-RL7?
For technical support, including ADUM3211WBRZ-RL7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADUM3211WBRZ-RL7 requirements.
6.How does Aetrix verify that ADUM3211WBRZ-RL7 is sourced from the original manufacturer or authorized distributors?
All ADUM3211WBRZ-RL7 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 ADUM3211WBRZ-RL7 meets industry standards.
7.What is the process for return or replacement of ADUM3211WBRZ-RL7?
All ADUM3211WBRZ-RL7 units undergo pre-shipment inspection (PSI). If there is an issue with ADUM3211WBRZ-RL7, 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 ADUM3211WBRZ-RL7 part is unused and in its original packaging.
Return procedure for ADUM3211WBRZ-RL7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ADUM3211WBRZ-RL7 Tags
-
ISO1212DBQR
Texas Instruments
-
ISO6721BDR
Texas Instruments
-
SI8710AC-B-ISR
Skyworks Solutions Inc.
-
ISO7720FDR
Texas Instruments
-
ISO7721DR
Texas Instruments
-
ISO7721FDR
Texas Instruments
-
SI8710CC-B-ISR
Skyworks Solutions Inc.
-
ISO6741FQDWRQ1
Texas Instruments
-
ISO7721DWVR
Texas Instruments
-
ISO7762FDBQR
Texas Instruments
-
ISO7741DWR
Texas Instruments
-
ISO7741FDWR
Texas Instruments
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