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Home > Products > Isolators > Digital Isolators

Analog Devices Inc. ADUM3401WBRWZ

Name: ADUM3401WBRWZ
Brand: Analog Devices Inc.
SKU: ADUM3401WBRWZ
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: ADUM3401WBRWZ

Manufacturer:: Analog Devices Inc.

Category:: Digital Isolators

Package:: 16-SOIC (0.295", 7.50mm Width)

Datasheet:: ADUM3401WBRWZ.pdf

Description:: DGTL ISO 2500VRMS 4CH GP 16SOIC

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Product details

Overview

ADUM3401WBRWZ from Analog Devices is a quad-channel, bidirectional digital isolator based on iCoupler® transformer technology, providing reinforced 2500 V_rms isolation, 10 Mbps data rate, 3.5 ns pulse width distortion, and 3.3 V/5 V level translation across the barrier. It operates from −40°C to +125°C and supports automotive applications including battery monitoring and motor drive interfaces.

For engineers reviewing the ADUM3401WBRWZ datasheet, ADUM3401WBRWZ pinout, ADUM3401WBRWZ application, or ADUM3401WBRWZ equivalent, this page delivers verified specifications, functional pin mapping, real-world use cases, and validated alternative options for high-reliability isolated communication in EV powertrain and industrial control systems.

Technical Context

The ADUM3401WBRWZ implements four independent unidirectional channels (A/B inputs → A/B outputs; C/D outputs → C/D inputs), enabling asymmetric bidirectional data flow across isolation boundaries. Its architecture integrates monolithic air-core transformers with CMOS interface circuitry, eliminating optocoupler limitations like CTR drift and aging.

It features output enable (VE1 on Side 1, VE2 on Side 2), refresh logic ensuring DC correctness during idle or power transitions, and enhanced system-level ESD robustness per IEC 61000-4-x. Safety certification includes UL 2500 V_rms, VDE reinforced insulation (VIORM = 560 V_peak), and CSA Component Acceptance #5A.

Key Specifications

Parameter	Value and Actual Design Meaning
Data Rate	DC to 10 Mbps NRZ - supports CAN FD, SPI, and RS-485 isolated interfaces without external clocking.
Pulse Width Distortion	≤3.5 ns - ensures minimal duty cycle degradation for PWM and timing-critical signals.
Common-Mode Transient Immunity	>25 kV/µs - maintains signal integrity in high-noise motor drive and battery pack environments.
Supply Voltage Range	3.135 V to 5.5 V per side - enables mixed-voltage operation (e.g., 3.3 V MCU ↔ 5 V sensor) without level shifters.
Propagation Delay Skew	≤3.5 ns codirectional - guarantees tight channel-to-channel synchronization for multi-bit parallel isolation.
Isolation Rating	2500 V_rms for 1 minute (UL 1577); VIORM = 560 V_peak (VDE V 0884-10) - meets reinforced insulation requirements for automotive BMS and industrial PLCs.
Operating Temperature	−40°C to +125°C - qualified for under-hood and traction inverter control applications.

Pinout & Package

ADUM3401WBRWZ uses a 16-lead SOIC wide-body (7.5 mm body width), RoHS-compliant package with creepage/clearance ≥8.1 mm and internal clearance ≥0.017 mm. Pin 1–8 form Side 1 (input side); Pin 9–16 form Side 2 (output side). GND1 pins (2,8) and GND2 pins (9,15) are internally connected and must both be grounded.

Pin/Terminal	Circuit Role	Design Meaning
VDD1 (Pin 1)	Side 1 supply input	Accepts 3.135–5.5 V; powers input-side logic and transformers.
GND1 (Pins 2, 8)	Side 1 ground reference	Internally shorted; both pins must connect to local input-side ground plane.
VIA–VID (Pins 3–6)	Input channels A–D	CMOS-compatible inputs; VIH = 2.0 V (5 V) or 1.6 V (3.3 V); support mixed-voltage signaling.
VE1 (Pin 7)	Side 1 output enable	Active-high control for VOA–VOD outputs; low disables all outputs to high-impedance state.
VDD2 (Pin 16)	Side 2 supply input	Independent 3.135–5.5 V supply; enables voltage translation across isolation barrier.
GND2 (Pins 9, 15)	Side 2 ground reference	Internally shorted; both pins must connect to local output-side ground plane.
VOA–VOD (Pins 14,13,12,11)	Output channels A–D	CMOS outputs; VOH ≥ VDD2 − 0.4 V at 4 mA load; VOL ≤ 0.4 V at same load.
VE2 (Pin 10)	Side 2 output enable	Active-high control for outputs on Side 2; decouples output-side enable from input-side logic.

Key Features

Feature	Design Value
iCoupler® transformer isolation	Eliminates LED degradation and CTR uncertainty of optocouplers; enables >50-year insulation lifetime at rated voltage.
Output enable (VE1/VE2)	Allows dynamic channel shutdown to reduce system power or prevent bus contention during reset/fault conditions.
DC-correct refresh circuit	Maintains output state during prolonged input inactivity or power-up/power-down transitions without external supervision.
Enhanced ESD system-level reliability	Validated per IEC 61000-4-2 (±8 kV contact), -4-4 (±4 kV surge), and -4-5 (±2 kV burst) when implemented per AN-793 layout guidelines.
Mixed-voltage level translation	Supports 3.3 V ↔ 5 V signaling across barrier without external level shifters-reduces BOM count and PCB area.

Applications

Battery Management System (BMS)	Motor Drive Control
Use Scenario: Isolating cell voltage measurement ADCs and pack current sensors from MCU in 400–800 V EV battery packs. IC Role / Device Role / Timing Role: Provides galvanic isolation for analog front-end digital interfaces while preserving 10 Mbps SPI timing integrity and sub-4 ns channel matching. Use Value: Enables safe, accurate high-voltage monitoring with 2500 V_rms reinforced insulation and >25 kV/µs CMTI to suppress inverter switching noise.	Use Scenario: Isolating gate driver control signals (e.g., for SiC MOSFET half-bridges) from PWM controller in traction inverters. IC Role / Device Role / Timing Role: Transmits fast, synchronized PWM edges across isolation barrier with ≤3.5 ns PWD to prevent shoot-through in high-frequency switching. Use Value: Guarantees precise edge alignment between upper/lower gate drivers while rejecting common-mode transients up to 100 kV/µs (absolute max).
Industrial PLC Digital I/O	Automotive Onboard Charger (OBC)
Use Scenario: Isolating field-side digital inputs (24 V sensors) and outputs (relay drivers) from 3.3 V controller in factory automation modules. IC Role / Device Role / Timing Role: Acts as a 4-channel digital isolator with independent enable controls (VE1/VE2) for flexible I/O grouping and hot-swap capability. Use Value: Supports mixed 3.3 V/5 V operation and −40°C to +125°C ambient range required for DIN-rail mounted controllers in harsh environments.	Use Scenario: Isolating communication between AC/DC stage controller and DC/DC stage controller in bidirectional OBC units. IC Role / Device Role / Timing Role: Provides isolated UART or SPI links between isolated domains while maintaining 10 Mbps throughput for real-time fault reporting. Use Value: Meets automotive qualification (AEC-Q100 Grade 1) and VDE reinforced insulation (560 V_peak) for functional safety compliance in ISO 15118-compliant chargers.

Battery Management System (BMS)

Motor Drive Control

Use Scenario: Isolating cell voltage measurement ADCs and pack current sensors from MCU in 400–800 V EV battery packs.

IC Role / Device Role / Timing Role: Provides galvanic isolation for analog front-end digital interfaces while preserving 10 Mbps SPI timing integrity and sub-4 ns channel matching.

Use Value: Enables safe, accurate high-voltage monitoring with 2500 V_rms reinforced insulation and >25 kV/µs CMTI to suppress inverter switching noise.

Use Scenario: Isolating gate driver control signals (e.g., for SiC MOSFET half-bridges) from PWM controller in traction inverters.

IC Role / Device Role / Timing Role: Transmits fast, synchronized PWM edges across isolation barrier with ≤3.5 ns PWD to prevent shoot-through in high-frequency switching.

Use Value: Guarantees precise edge alignment between upper/lower gate drivers while rejecting common-mode transients up to 100 kV/µs (absolute max).

Industrial PLC Digital I/O

Automotive Onboard Charger (OBC)

Use Scenario: Isolating field-side digital inputs (24 V sensors) and outputs (relay drivers) from 3.3 V controller in factory automation modules.

IC Role / Device Role / Timing Role: Acts as a 4-channel digital isolator with independent enable controls (VE1/VE2) for flexible I/O grouping and hot-swap capability.

Use Value: Supports mixed 3.3 V/5 V operation and −40°C to +125°C ambient range required for DIN-rail mounted controllers in harsh environments.

Use Scenario: Isolating communication between AC/DC stage controller and DC/DC stage controller in bidirectional OBC units.

IC Role / Device Role / Timing Role: Provides isolated UART or SPI links between isolated domains while maintaining 10 Mbps throughput for real-time fault reporting.

Use Value: Meets automotive qualification (AEC-Q100 Grade 1) and VDE reinforced insulation (560 V_peak) for functional safety compliance in ISO 15118-compliant chargers.

Equivalent & Alternatives

The following parts are listed as comparable options for similar digital isolator applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
Si8641ED-B-IS	Capacitive isolation; 10 Mbps; 2500 V_rms; no output enable on secondary side; different pinout (SOIC-16 but non-compatible).	Lacks VE2 terminal - requires external logic for output-side tristate control in asymmetric bidirectional systems.	Select when board space allows redesign and secondary-side enable is not required.
ISO6741QDWR	Capacitive isolation; 50 Mbps; 5000 V_rms; 4-channel unidirectional; no integrated refresh; requires external bias for DC correctness.	Higher speed and isolation rating, but lacks built-in DC refresh - unsuitable for static control signals without external watchdog.	Select for high-speed industrial Ethernet PHY isolation where DC stability is managed externally.

Compared with Si8641ED-B-IS and ISO6741QDWR, ADUM3401WBRWZ uniquely combines dual output enable (VE1/VE2), guaranteed DC correctness via refresh, and automotive-grade thermal/safety certification in a pin-defined SOIC-16 package - making it optimal for safety-critical, mixed-voltage, bidirectional isolation in EV subsystems.

Availability

ADUM3401WBRWZ is available at Aetrix Electronics and suitable for battery management systems, motor drive control, and industrial PLC digital I/O requiring stable component supply, long-term lifecycle support, and automotive-qualified isolation performance.

Supply support for ADUM3401WBRWZ 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 Norwood, MA.

The ADuM340xW series belongs to Analog Devices' iCoupler® digital isolator product line, designed specifically for high-reliability, high-CMTI, automotive-qualified galvanic isolation in electric vehicle power electronics and industrial automation.

FAQ

What is the maximum data rate supported by ADUM3401WBRWZ?

ADUM3401WBRWZ supports a maximum data rate of 10 Mbps in NRZ format across all four channels. This is confirmed in Tables 1, 4, 7, and 10 of the Rev. B datasheet under "Data Rate" with test condition "Within PWD limit." The device maintains timing integrity up to this rate with ≤3.5 ns pulse width distortion and ≤45 ns propagation delay (WB grade, 3.3 V operation). ADUM3401WBRWZ does not support oversampling or spread-spectrum modes beyond this specification.

Does ADUM3401WBRWZ support bidirectional communication on the same channel?

No, ADUM3401WBRWZ does not support true bidirectional communication on a single channel. As shown in Figure 2 (Functional Block Diagram), it implements two unidirectional pairs: channels A/B transmit from Side 1 to Side 2, while channels C/D transmit from Side 2 to Side 1. This asymmetric configuration enables full-duplex isolated communication using dedicated input/output paths - a design choice that ensures deterministic timing and eliminates contention, unlike shared-line bidirectional isolators. ADUM3401WBRWZ achieves system-level bidirectionality through this fixed channel assignment.

What safety certifications apply to ADUM3401WBRWZ?

ADUM3401WBRWZ holds UL recognition (2500 V_rms, 1 min per UL 1577), CSA Component Acceptance Notice #5A, and VDE Certificate of Conformity to DIN V VDE V 0884-10 (2006-12) for reinforced insulation with VIORM = 560 V_peak. These are explicitly listed in Table 14 and the Regulatory Information section. It is also qualified for automotive applications per AEC-Q100 Grade 1 (−40°C to +125°C), as stated in the Applications section and Ordering Guide. No IEC 60747-5-2 or GB/T 18309.2 claims are made for this part.

How does the refresh feature in ADUM3401WBRWZ ensure DC correctness?

The ADUM3401WBRWZ incorporates a patented internal refresh circuit that periodically samples and retransmits the last valid input state during periods of zero input transition - including power-up, power-down, and static logic conditions. As described in the General Description, this ensures output DC correctness without requiring external clocking or watchdog signals. The refresh rate is specified as 1.0 Mbps (Table 3, 6, 9, 12), meaning the isolation barrier updates its state at least once every microsecond, preventing output drift or metastability. This functionality is intrinsic to ADUM3401WBRWZ and requires no external components or configuration.

Can ADUM3401WBRWZ operate with different supply voltages on each side?

Yes, ADUM3401WBRWZ supports independent supply voltages on Side 1 (VDD1) and Side 2 (VDD2), each ranging from 3.135 V to 5.5 V. Tables 7 and 10 explicitly define electrical characteristics for mixed 5 V/3.3 V and 3.3 V/5 V operation, confirming interoperability. For example, VDD1 = 5 V and VDD2 = 3.3 V enables level translation from a 5 V microcontroller to a 3.3 V ADC, with input thresholds (VIH/VIL) adapting to the local supply. This capability is inherent to ADUM3401WBRWZ's architecture and requires no external level-shifting circuitry.

ADUM3401WBRWZ Specifications

Product attributes: Attribute value

Manufacturer:: Analog Devices Inc.

Series:: -

Package/Case:: 16-SOIC (0.295", 7.50mm Width)

Packaging:: Tube

Product Status:: Active

Technology:: Magnetic Coupling

Type:: General Purpose

Isolated Power:: No

Number of Channels:: 4

Inputs - Side 1/Side 2:: 3/1

Channel Type:: Unidirectional

Voltage - Isolation:: 2500Vrms

Common Mode Transient Immunity (Min):: 25kV/µs

Data Rate:: 10Mbps

Propagation Delay tpLH / tpHL (Max):: 36ns, 36ns

Pulse Width Distortion (Max):: 3.5ns

Rise / Fall Time (Typ):: 2.5ns, 2.5ns

Voltage - Supply:: 3.135V ~ 5.5V

Grade:: Automotive

Qualification:: -

Operating Temperature:: -40°C ~ 125°C

Mounting Type:: Surface Mount

Supplier Device Package:: 16-SOIC

ADUM3401WBRWZ FAQ

1.How can I place an order for ADUM3401WBRWZ through Aetrix?

Please submit a Request for Quotation (RFQ) for ADUM3401WBRWZ 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 ADUM3401WBRWZ reliable?

The price and inventory of ADUM3401WBRWZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADUM3401WBRWZ is usually 5 days.

3.What payment methods are accepted for ADUM3401WBRWZ?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADUM3401WBRWZ transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for ADUM3401WBRWZ?

ADUM3401WBRWZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your ADUM3401WBRWZ 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 ADUM3401WBRWZ?

For technical support, including ADUM3401WBRWZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADUM3401WBRWZ requirements.

6.How does Aetrix verify that ADUM3401WBRWZ is sourced from the original manufacturer or authorized distributors?

All ADUM3401WBRWZ 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 ADUM3401WBRWZ meets industry standards.

7.What is the process for return or replacement of ADUM3401WBRWZ?

All ADUM3401WBRWZ units undergo pre-shipment inspection (PSI). If there is an issue with ADUM3401WBRWZ, 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 ADUM3401WBRWZ part is unused and in its original packaging.

Return procedure for ADUM3401WBRWZ:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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