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Analog Devices Inc. ADUM1286WCRZ
- Part No.:
- ADUM1286WCRZ
- Manufacturer:
- Analog Devices Inc.
- Category:
- Digital Isolators
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
ADUM1286WCRZ.pdf
- Description:
- DGTL ISO 3000VRMS 2CH GP 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,622
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Product details
Overview
ADuM1286WCRZ from Analog Devices is a 3 kVRMS dual-channel digital isolator with default-low output logic, 100 Mbps data rate, 23 ns typical propagation delay, and reinforced insulation rated to 565 VPEAK, designed for high-noise industrial field bus and automotive battery monitor interfaces.
For engineers reviewing the ADuM1286WCRZ datasheet, ADuM1286WCRZ pinout, ADuM1286WCRZ application, or ADuM1286WCRZ equivalent, this page delivers verified specifications, SOIC-8 pin mapping, AEC-Q100 qualification status, level translation capability (3.3 V/5 V), and real-world isolation use cases-no generic claims or inferred functionality.
Technical Context
The ADuM1286WCRZ implements iCoupler® monolithic air-core transformer isolation with patented refresh circuitry ensuring DC-correct output states during input inactivity. Its two independent channels support bidirectional communication with tight channel-to-channel matching (≤5 ns codirectional skew) and operate across 3.135 V–5.5 V supplies on both sides.
It delivers high common-mode transient immunity (>25 kV/μs), operates up to +125°C, and meets reinforced insulation requirements per DIN EN IEC 60747-17 (VDE 0884-17), UL 1577, and IEC/EN/CSA 62368-1-enabling safe deployment in hybrid electric vehicle motor drives and industrial PLC I/O modules.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Data Rate | Up to 100 Mbps NRZ - supports high-speed SPI, RS-485, and CAN FD signal isolation without timing bottlenecks. |
| Propagation Delay | 23 ns typical - enables precise timing-critical applications such as motor control PWM feedback loops. |
| Isolation Rating | 3000 VRMS for 1 minute - certified reinforced insulation barrier meeting safety-critical system requirements. |
| Output Default State | Default low - ensures fail-safe behavior in power-loss scenarios for systems requiring active-low enable or reset signaling. |
| Common-Mode Immunity | >25 kV/μs - maintains signal integrity in high-dv/dt environments like inverter gate drivers and battery management systems. |
| Operating Temperature | −40°C to +125°C - qualified for under-hood automotive and industrial ambient conditions without derating. |
| Supply Voltage Range | 3.135 V to 5.5 V per side - enables flexible level translation between 3.3 V microcontrollers and 5 V analog front-ends. |
Pinout & Package
Narrow-body, RoHS-compliant 8-lead SOIC package (SOIC_N-8) with creepage/clearance ≥4.0 mm and internal 18 μm insulation gap.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - VDD1 | Input-side supply | Power source for Side 1 logic; accepts 3.135 V–5.5 V; UVLO threshold at 2.75 V. |
| 2 - VOA | Output A | Isolated logic output with default-low state; sinks/sourcing ±10 mA; VOH/VOL specified at 3.2 mA load. |
| 3 - VIB | Input B | Logic input referenced to VDD1/GND1; VIH = 0.7×VDD1, VIL = 0.3×VDD1. |
| 4 - GND1 | Input-side ground | Reference return for Side 1; electrically isolated from GND2 by >1013 Ω resistance. |
| 5 - GND2 | Output-side ground | Reference return for Side 2; forms galvanic barrier with GND1; critical for noise rejection. |
| 6 - VOB | Output B | Isolated logic output with default-low state; identical electrical specs to VOA. |
| 7 - VIA | Input A | Logic input referenced to VDD1/GND1; matches VIB in threshold and loading behavior. |
| 8 - VDD2 | Output-side supply | Power source for Side 2 logic; independent of VDD1; enables bidirectional level translation. |
Key Features
| Feature | Design Value |
|---|---|
| Patented refresh circuitry | Maintains DC-correct output state indefinitely during input inactivity-eliminates need for external watchdog or refresh signals. |
| Reinforced insulation certification | DIN EN IEC 60747-17 (VDE 0884-17), UL 1577, and IEC/EN/CSA 62368-1 compliance - permits single-component isolation in safety-critical systems. |
| AEC-Q100 Grade 1 qualification | Validated for automotive applications including battery monitors and motor drives operating from −40°C to +125°C ambient. |
| Bidirectional level translation | Supports 3.3 V ↔ 5 V signal bridging across isolation barrier without external level shifters or voltage dividers. |
| Low dynamic power consumption | 0.09 mA/Mbps (input) and 0.02 mA/Mbps (output) - reduces thermal load in dense PCB layouts and extends battery life in portable systems. |
Applications
| Industrial Field Bus Isolation | Data Converter Interface Isolation |
|---|---|
Use Scenario: Isolating RS-485 transceivers in programmable logic controller (PLC) backplanes exposed to 2 kV surge transients. IC Role / Device Role / Timing Role: Dual-channel isolator providing galvanic separation between MCU UART and differential bus driver, with matched propagation delay preserving timing margins. Use Value: Enables reliable communication in noisy factory environments while meeting IEC 61000-4-5 surge immunity requirements without additional protection circuitry. |
Use Scenario: Isolating SPI lines between an industrial-grade ADC (e.g., AD7606) and host microcontroller in motor current sensing circuits. IC Role / Device Role / Timing Role: High-speed, low-skew isolator preserving 100 Mbps SPI clock/data alignment across isolation barrier for accurate 16-bit sampling. Use Value: Prevents ground loop errors and noise coupling into precision analog measurements while maintaining full throughput performance. |
| Hybrid Electric Vehicle Battery Monitor | Automotive Motor Drive Control |
Use Scenario: Signal isolation in battery cell monitoring units (CMUs) interfacing with high-voltage battery packs (up to 800 V DC). IC Role / Device Role / Timing Role: AEC-Q100 qualified isolator transmitting cell voltage and temperature data from isolated sense circuitry to central BMS controller. Use Value: Provides reinforced insulation (565 VPEAK) and 125°C operation required for under-battery-pack placement, eliminating optocoupler aging concerns. |
Use Scenario: Isolating gate drive signals and fault feedback in 400 V traction inverter half-bridge modules. IC Role / Device Role / Timing Role: Dual-channel isolator delivering synchronized PWM signals to high-side/low-side IGBT drivers with <5 ns channel matching. Use Value: Prevents shoot-through by minimizing propagation skew, while high CMTI (>25 kV/μs) rejects switching noise from adjacent power stages. |
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 VRMS rating; 150 Mbps max; no default-low output configuration. | Lacks AEC-Q100 qualification; higher CMTI (35 kV/μs) but no automotive grade assurance. | Prefer when higher isolation voltage or speed is needed, but verify fail-safe logic behavior in power-loss conditions. |
| ISO7721FDWR | Capacitive isolation; 5000 VRMS; 100 Mbps; default-low option available (ISO7721FDWR); no AEC-Q100 grade. | Qualified to IEC 60747-17 but not AEC-Q100; lower max operating temperature (+125°C same, but automotive temp cycling not validated). | Acceptable for industrial use where AEC-Q100 is not mandated; confirm layout compatibility with SOIC-8 footprint. |
Compared with SI8621ED-B-IS and ISO7721FDWR, the ADuM1286WCRZ uniquely combines AEC-Q100 Grade 1 qualification, default-low output, and proven iCoupler® transformer reliability in automotive battery monitoring-making it the only choice where fail-safe behavior and automotive lifecycle validation are mandatory.
Availability
ADuM1286WCRZ is available at Aetrix Electronics and suitable for industrial field bus isolation, automotive battery monitor interfaces, and motor drive control systems requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for ADuM1286WCRZ 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 ADuM1286WCRZ belongs to the iCoupler® digital isolator product line, engineered specifically for safety-critical, high-noise, and high-reliability applications demanding reinforced insulation, AEC-Q100 compliance, and guaranteed DC correctness.
FAQ
What is the default output state of the ADuM1286WCRZ?
The ADuM1286WCRZ has a default-low output state on both channels (VOA and VOB). When power is first applied or if the input side loses power while the output side remains powered, the outputs settle to logic low within 1.6 µs. This behavior is confirmed in Table 25 of the Rev. E datasheet and distinguishes ADuM1286WCRZ from ADuM1281/ADuM1280, which default high.
Does the ADuM1286WCRZ support level translation between 3.3 V and 5 V domains?
Yes, the ADuM1286WCRZ supports bidirectional level translation: VDD1 and VDD2 can be independently set to 3.135 V–5.5 V, enabling direct interface between 3.3 V microcontrollers and 5 V peripherals. Electrical characteristics for mixed-supply operation (e.g., VDD1 = 5 V / VDD2 = 3.3 V) are fully specified in Tables 7 and 8 of the datasheet.
Is the ADuM1286WCRZ qualified for automotive applications?
Yes, the ADuM1286WCRZ is AEC-Q100 qualified for automotive applications (Grade 1: −40°C to +125°C ambient). It is explicitly listed in the "Automotive Products" section of the datasheet and certified to safety standards including DIN EN IEC 60747-17 (VDE 0884-17) and IEC/EN/CSA 62368-1 for reinforced insulation in automotive systems.
What is the maximum common-mode transient immunity (CMTI) of the ADuM1286WCRZ?
The ADuM1286WCRZ guarantees >25 kV/μs common-mode transient immunity, with a typical value of 35 kV/μs. This is measured per IEC 60747-17 with VIx = VDDx, VCM = 1000 V, and transient magnitude = 800 V, ensuring robust operation in high-dv/dt environments like motor drives and inverters.
What safety certifications does the ADuM1286WCRZ hold?
The ADuM1286WCRZ holds UL 1577 (3000 VRMS, 1 min), DIN EN IEC 60747-17 (VDE 0884-17) reinforced insulation (565 VPEAK), IEC/EN/CSA 62368-1, and IEC/CSA 61010-1 certifications. These are documented in Table 14 and Section "Regulatory Information" of the Rev. E datasheet.
ADUM1286WCRZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- 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:
- 100Mbps
- Propagation Delay tpLH / tpHL (Max):
- 24ns, 24ns
- Pulse Width Distortion (Max):
- 2ns
- 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
ADUM1286WCRZ FAQ
1.How can I place an order for ADUM1286WCRZ through Aetrix?
Please submit a Request for Quotation (RFQ) for ADUM1286WCRZ 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 ADUM1286WCRZ reliable?
The price and inventory of ADUM1286WCRZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADUM1286WCRZ is usually 5 days.
3.What payment methods are accepted for ADUM1286WCRZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADUM1286WCRZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADUM1286WCRZ?
ADUM1286WCRZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADUM1286WCRZ 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 ADUM1286WCRZ?
For technical support, including ADUM1286WCRZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADUM1286WCRZ requirements.
6.How does Aetrix verify that ADUM1286WCRZ is sourced from the original manufacturer or authorized distributors?
All ADUM1286WCRZ 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 ADUM1286WCRZ meets industry standards.
7.What is the process for return or replacement of ADUM1286WCRZ?
All ADUM1286WCRZ units undergo pre-shipment inspection (PSI). If there is an issue with ADUM1286WCRZ, 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 ADUM1286WCRZ part is unused and in its original packaging.
Return procedure for ADUM1286WCRZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ADUM1286WCRZ 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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