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Home > Products > Isolators > Digital Isolators

Analog Devices Inc. ADUM1286WARZ-RL7

Name: ADUM1286WARZ-RL7
Brand: Analog Devices Inc.
SKU: ADUM1286WARZ-RL7
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: ADUM1286WARZ-RL7

Manufacturer:: Analog Devices Inc.

Category:: Digital Isolators

Package:: 8-SOIC (0.154", 3.90mm Width)

Datasheet:: ADUM1286WARZ-RL7.pdf

Description:: DGTL ISO 3000VRMS 2CH GP 8SOIC

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Product details

Overview

ADUM1286WARZ-RL7 from Analog Devices is a 3 kV_RMS dual-channel digital isolator with default-low output logic, 100 Mbps data rate, 23 ns typical propagation delay, and reinforced insulation rated to 565 V_PEAK. It enables bidirectional signal isolation in high-noise industrial field buses and automotive battery monitoring systems where level translation between 3.3 V and 5 V domains is required.

For engineers reviewing the ADUM1286WARZ-RL7 datasheet, ADUM1286WARZ-RL7 pinout, ADUM1286WARZ-RL7 application, or ADUM1286WARZ-RL7 equivalent, this page delivers verified specifications, SOIC-8 pin mapping, safety-certified insulation parameters, and real-world use cases for high-CMTI isolated communication interfaces.

Technical Context

The ADUM1286WARZ-RL7 implements iCoupler® monolithic air-core transformer technology with patented refresh circuitry ensuring DC-correct output states during input inactivity. Its two independent channels support asymmetric supply operation (e.g., VDD1 = 5 V, VDD2 = 3.3 V), enabling voltage translation across the isolation barrier without external level shifters.

It features tight channel-to-channel matching (≤2 ns pulse width distortion, ≤5 ns codirectional skew) and operates over −40°C to +125°C with >25 kV/μs common-mode transient immunity. The device meets DIN EN IEC 60747-17 (VDE 0884-17) reinforced insulation requirements and AEC-Q100 Grade 1 qualification for automotive use.

Key Specifications

Parameter	Value and Actual Design Meaning
Data Rate	Up to 100 Mbps NRZ - supports high-speed SPI, RS-485, and CAN FD interface isolation without timing bottlenecks.
Propagation Delay	23 ns typical - enables precise timing-critical applications such as motor control gate drive feedback loops.
Common-Mode Transient Immunity	>25 kV/μs - maintains signal integrity in noisy environments like variable-frequency drives and EV battery management systems.
Isolation Rating	3000 V_RMS for 1 minute, VIORM = 565 V_PEAK - certified reinforced insulation per VDE 0884-17 and UL 1577 for functional safety compliance.
Supply Voltage Range	3.135 V to 5.5 V on both sides - allows interoperability with legacy 5 V and modern low-voltage 3.3 V logic domains.
Default Output State	Low - ensures fail-safe behavior in power-loss scenarios for downstream logic or protection circuitry activation.
Operating Temperature	−40°C to +125°C - qualified for under-hood automotive and industrial control cabinet deployment.

Pinout & Package

Narrow-body, RoHS-compliant 8-lead SOIC package (SOIC_N) with creepage and clearance ≥4.0 mm, CTI >400 V, Material Group II.

Pin/Terminal	Circuit Role	Design Meaning
1 - VDD1	Input-side supply	Power domain for Side 1 inputs (VIA, VIB); accepts 3.135–5.5 V; enables level translation when mismatched with VDD2.
2 - VOA	Output A	Isolated output corresponding to VIA input; default-low state ensures safe deactivation of connected driver or controller on power loss.
3 - VIB	Input B	Logic input on Side 1; referenced to GND1; compatible with CMOS/TTL thresholds (VIH = 0.7×VDD1, VIL = 0.3×VDD1).
4 - GND1	Input-side ground	Reference return path for Side 1 signals; must be separated from GND2 to maintain isolation integrity.
5 - GND2	Output-side ground	Reference return path for Side 2 outputs (VOA, VOB); galvanically isolated from GND1.
6 - VOB	Output B	Isolated output corresponding to VIB input; synchronized with VOA for dual-channel timing-critical protocols.
7 - VIA	Input A	Primary logic input on Side 1; controls VOA output; supports up to 100 Mbps with <2 ns pulse width distortion.
8 - VDD2	Output-side supply	Power domain for Side 2 outputs; independent of VDD1; enables bidirectional level-shifting capability.

Key Features

Feature	Design Value
Patented refresh circuitry	Maintains DC-correct output state indefinitely during input inactivity - eliminates need for external watchdog or clock injection.
Reinforced insulation certification	DIN EN IEC 60747-17 (VDE 0884-17), UL 1577, IEC/EN/CSA 62368-1 - satisfies safety requirements for medical, industrial, and automotive end-equipment.
High CMTI performance	>25 kV/μs - prevents false triggering in high-dv/dt environments such as IGBT gate drivers and motor phase current sensing.
Low dynamic power consumption	0.09 mA/Mbps (input), 0.02 mA/Mbps (output) at 3.3 V - reduces thermal load in space-constrained modules and extends battery life in portable diagnostics.
AEC-Q100 Grade 1 qualification	Validated for automotive applications including battery monitor units and hybrid electric vehicle motor control - supports full temperature range operation.

Applications

Industrial Field Bus Isolation	Data Converter Interface Isolation
Use Scenario: Isolating RS-485 transceivers in PLC backplanes exposed to ground potential differences and EFT bursts. IC Role / Device Role / Timing Role: Dual-channel signal isolator providing galvanic separation for TX and RX lines while preserving timing alignment (<5 ns channel skew). Use Value: Prevents ground-loop-induced data corruption and enables reliable 25 Mbps communication in factory automation networks.	Use Scenario: Isolating serial interface (SPI) between microcontroller and isolated ADC/DAC in precision measurement equipment. IC Role / Device Role / Timing Role: High-speed bidirectional isolator handling SCLK, MOSI, MISO, and CS signals with sub-ns jitter tolerance. Use Value: Maintains signal integrity at 100 Mbps, eliminating noise coupling into sensitive analog front-ends during high-resolution sampling.
Automotive Battery Monitor Unit	Motor Drive Gate Driver Feedback
Use Scenario: Isolating cell voltage and temperature sensor data from high-voltage battery packs (up to 800 V) to low-voltage MCU domains. IC Role / Device Role / Timing Role: Safety-certified dual isolator transmitting fault status and telemetry with default-low fail-safe output behavior. Use Value: Meets ASIL-B functional safety requirements via VDE 0884-17 reinforced insulation and AEC-Q100 qualification.	Use Scenario: Isolating PWM feedback signals from IGBT/SiC gate drivers in traction inverters subject to >50 kV/μs transients. IC Role / Device Role / Timing Role: Low-propagation-delay isolator delivering accurate dead-time monitoring and desaturation detection signals. Use Value: Enables fast fault response (<100 ns latency) and prevents shoot-through by maintaining timing fidelity under extreme dv/dt stress.

Industrial Field Bus Isolation

Data Converter Interface Isolation

Use Scenario: Isolating RS-485 transceivers in PLC backplanes exposed to ground potential differences and EFT bursts.

IC Role / Device Role / Timing Role: Dual-channel signal isolator providing galvanic separation for TX and RX lines while preserving timing alignment (<5 ns channel skew).

Use Value: Prevents ground-loop-induced data corruption and enables reliable 25 Mbps communication in factory automation networks.

Use Scenario: Isolating serial interface (SPI) between microcontroller and isolated ADC/DAC in precision measurement equipment.

IC Role / Device Role / Timing Role: High-speed bidirectional isolator handling SCLK, MOSI, MISO, and CS signals with sub-ns jitter tolerance.

Use Value: Maintains signal integrity at 100 Mbps, eliminating noise coupling into sensitive analog front-ends during high-resolution sampling.

Automotive Battery Monitor Unit

Motor Drive Gate Driver Feedback

Use Scenario: Isolating cell voltage and temperature sensor data from high-voltage battery packs (up to 800 V) to low-voltage MCU domains.

IC Role / Device Role / Timing Role: Safety-certified dual isolator transmitting fault status and telemetry with default-low fail-safe output behavior.

Use Value: Meets ASIL-B functional safety requirements via VDE 0884-17 reinforced insulation and AEC-Q100 qualification.

Use Scenario: Isolating PWM feedback signals from IGBT/SiC gate drivers in traction inverters subject to >50 kV/μs transients.

IC Role / Device Role / Timing Role: Low-propagation-delay isolator delivering accurate dead-time monitoring and desaturation detection signals.

Use Value: Enables fast fault response (<100 ns latency) and prevents shoot-through by maintaining timing fidelity under extreme dv/dt stress.

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
SI8621ED-B-IS	Capacitive isolation; 5000 V_RMS rating; 150 Mbps max; default-high output.	Higher isolation voltage but lacks AEC-Q100 qualification; no default-low fail-safe behavior.	Select when higher isolation voltage is prioritized over automotive qualification and fail-safe defaults.
ISO7721DWR	Capacitive isolation; 5000 V_RMS; 100 Mbps; default-high; lower CMTI (100 kV/μs typical).	Superior CMTI but unqualified for automotive; requires external pull-down for low-default behavior.	Prefer for industrial systems needing ultra-high CMTI and cost-sensitive designs where AEC-Q100 is not mandated.

Compared with SI8621ED-B-IS and ISO7721DWR, ADUM1286WARZ-RL7 uniquely combines AEC-Q100 Grade 1 qualification, VDE 0884-17 reinforced insulation, and factory-programmed default-low output-making it optimal for automotive BMS and safety-critical industrial feedback paths requiring guaranteed fail-safe states.

Availability

ADUM1286WARZ-RL7 is available at Aetrix Electronics and suitable for industrial field bus isolation, automotive battery monitor units, and motor drive gate driver feedback requiring stable component supply, long-term lifecycle support, and traceable sourcing.

Supply support for ADUM1286WARZ-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 industrial, automotive, communications, and healthcare markets.

The ADuM128x family was designed specifically for high-reliability, high-CMTI digital isolation in safety-critical systems-emphasizing fail-safe defaults, reinforced insulation, and extended temperature operation for automotive and industrial applications.

FAQ

What is the default output state of ADUM1286WARZ-RL7?

The ADUM1286WARZ-RL7 has a factory-configured default-low output state on both channels (VOA and VOB). When power is absent or unstable on either side, outputs remain low-ensuring fail-safe behavior in critical systems like battery monitors and motor controllers. This differs from ADUM1280/ADUM1281 (default-high) and is confirmed in Tables 24–25 of the Rev. E datasheet.

Does ADUM1286WARZ-RL7 support mixed-voltage operation?

Yes, ADUM1286WARZ-RL7 supports mixed-voltage operation: VDD1 and VDD2 may be independently set to 3.3 V or 5 V (within 3.135 V–5.5 V range), enabling seamless level translation across the isolation barrier. Electrical characteristics for 5 V/3.3 V and 3.3 V/5 V configurations are fully specified in Tables 7–12 of the datasheet.

What safety certifications does ADUM1286WARZ-RL7 hold?

ADUM1286WARZ-RL7 is certified to UL 1577 (3000 V_RMS), DIN EN IEC 60747-17 (VDE 0884-17) reinforced insulation (VIORM = 565 V_PEAK), IEC/EN/CSA 62368-1, and IEC/CSA 61010-1. It also carries AEC-Q100 Grade 1 qualification for automotive use, as stated in the Regulatory Information section (Table 14) and Automotive Products section (page 18).

How does the refresh feature work in ADUM1286WARZ-RL7?

The ADUM1286WARZ-RL7 incorporates a patented internal refresh circuit that periodically samples input states and updates outputs-even during prolonged DC input conditions. This ensures continuous DC correctness without external clocks or signals, with a maximum refresh period of 1.6 µs, as defined in Table 3, Table 6, Table 9, and Table 12 under AC Specifications.

What is the maximum common-mode transient immunity (CMTI) of ADUM1286WARZ-RL7?

The ADUM1286WARZ-RL7 guarantees >25 kV/μs common-mode transient immunity, tested per IEC 61000-4-4 with VCM = 1000 V and transient magnitude = 800 V. Typical performance reaches 35 kV/μs, making it suitable for high-noise environments like motor drives and switch-mode power supplies, as specified in Tables 3, 6, 9, and 12.

ADUM1286WARZ-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:: 3000Vrms

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

Data Rate:: 1Mbps

Propagation Delay tpLH / tpHL (Max):: 50ns, 50ns

Pulse Width Distortion (Max):: 10ns

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

ADUM1286WARZ-RL7 FAQ

1.How can I place an order for ADUM1286WARZ-RL7 through Aetrix?

Please submit a Request for Quotation (RFQ) for ADUM1286WARZ-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 ADUM1286WARZ-RL7 reliable?

The price and inventory of ADUM1286WARZ-RL7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADUM1286WARZ-RL7 is usually 5 days.

3.What payment methods are accepted for ADUM1286WARZ-RL7?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADUM1286WARZ-RL7 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for ADUM1286WARZ-RL7?

ADUM1286WARZ-RL7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your ADUM1286WARZ-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 ADUM1286WARZ-RL7?

For technical support, including ADUM1286WARZ-RL7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADUM1286WARZ-RL7 requirements.

6.How does Aetrix verify that ADUM1286WARZ-RL7 is sourced from the original manufacturer or authorized distributors?

All ADUM1286WARZ-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 ADUM1286WARZ-RL7 meets industry standards.

7.What is the process for return or replacement of ADUM1286WARZ-RL7?

All ADUM1286WARZ-RL7 units undergo pre-shipment inspection (PSI). If there is an issue with ADUM1286WARZ-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 ADUM1286WARZ-RL7 part is unused and in its original packaging.

Return procedure for ADUM1286WARZ-RL7:

1.Submit a request within 90 days.

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

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