My Inquiry
My Account
Analog Devices Inc. ADUM1286ARZ-RL7
- Part No.:
- ADUM1286ARZ-RL7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Digital Isolators
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
ADUM1286ARZ-RL7.pdf
- Description:
- DGTL ISO 3000VRMS 2CH GP 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,434
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
ADUM1286ARZ-RL7 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 3.135 V to 5.5 V dual-supply operation. It enables bidirectional signal isolation in high-noise industrial interfaces such as motor drive control and battery monitoring systems.
For engineers reviewing the ADUM1286ARZ-RL7 datasheet, ADUM1286ARZ-RL7 pinout, ADUM1286ARZ-RL7 application, or ADUM1286ARZ-RL7 equivalent, key selection criteria include reinforced insulation rating (VIORM = 565 VPEAK), AEC-Q100 qualification, channel-to-channel skew ≤5 ns (codirectional), and mixed-voltage level translation (3.3 V/5 V).
Technical Context
The ADUM1286ARZ-RL7 implements iCoupler® technology using monolithic air-core transformers for galvanic isolation, eliminating LED aging and timing drift inherent in optocouplers. Its patented refresh circuit ensures DC-correct output states during input inactivity or power-up transients.
It supports independent supply domains (VDD1/VDD2), enabling level translation across the isolation barrier. Default-low output behavior (VOA/VOB = low when inputs unpowered) is implemented via internal biasing, distinguishing it from ADUM1280/ADUM1281 (default-high) variants.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Data Rate | Up to 100 Mbps NRZ - supports high-speed serial interfaces like SPI clock lines and isolated ADC data streams. |
| Propagation Delay | 23 ns typical - enables tight timing budgets in real-time control loops and fast feedback paths. |
| Common-Mode Transient Immunity | >25 kV/μs - maintains signal integrity in noisy motor drive and inverter gate driver environments. |
| Isolation Rating | 3000 VRMS for 1 minute - meets reinforced insulation requirements per UL 1577 and DIN EN IEC 60747-17 (VDE 0884-17). |
| Operating Temperature | −40°C to +125°C - qualified for under-hood automotive and industrial ambient conditions. |
| Supply Voltage Range | 3.135 V to 5.5 V per side - allows interoperability between 3.3 V microcontrollers and 5 V analog front-ends. |
| Output Default State | Low - ensures fail-safe behavior in safety-critical systems where inactive state must assert low-level signals. |
Pinout & Package
Narrow-body 8-lead SOIC package (SOIC_N), RoHS-compliant, with creepage/clearance ≥4.0 mm and reinforced insulation barrier separating pins 1–4 (side 1) from pins 5–8 (side 2).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - VDD1 | Input-side supply | Power source for channel A/B inputs; supports 3.135 V–5.5 V; UVLO threshold at 2.75 V. |
| 2 - VOA | Output A | Isolated logic output with default-low behavior; drives loads up to ±10 mA. |
| 3 - VIB | Input B | Logic input referenced to VDD1/GND1; accepts CMOS levels (VIH = 0.7×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 isolation barrier with GND1; capacitance to GND1 = 2 pF. |
| 6 - VOB | Output B | Isolated logic output with default-low behavior; matches VOA timing (skew ≤5 ns codirectional). |
| 7 - VIA | Input A | Logic input referenced to VDD1/GND1; identical electrical specs to VIB. |
| 8 - VDD2 | Output-side supply | Power source for outputs VOA/VOB; independent of VDD1; enables level translation. |
Key Features
| Feature | Design Value |
|---|---|
| Reinforced insulation certification | DIN EN IEC 60747-17 (VDE 0884-17) and UL 1577 rated - eliminates need for external safety capacitors in medical/industrial designs. |
| DC-correct refresh architecture | 1.6 µs refresh period - guarantees output state retention without input toggling, critical for watchdog and enable signals. |
| AEC-Q100 Grade 1 qualification | Rated for −40°C to +125°C operation - validated for automotive battery management and traction inverter subsystems. |
| Bidirectional channel independence | Two fully isolated channels with no shared logic - supports asymmetric data flow (e.g., SPI SCLK/MOSI on one side, MISO on the other). |
| Low dynamic power consumption | 0.09 mA/Mbps (input), 0.03 mA/Mbps (output) at 3.3 V - reduces thermal load in dense PCB layouts. |
Applications
| Motor Drive Control | Battery Management System (BMS) |
|---|---|
Use Scenario: Isolating gate driver enable signals and fault feedback in 3-phase inverter stacks. IC Role / Device Role / Timing Role: Dual-channel isolator providing independent, low-skew (≤5 ns) enable/fault paths across high dv/dt barriers. Use Value: Prevents ground loop-induced false triggering while maintaining <23 ns propagation delay for cycle-accurate protection response. |
Use Scenario: Isolating cell voltage measurement data and balancing command signals between MCU and high-side monitor ICs. IC Role / Device Role / Timing Role: Level-translating isolator bridging 3.3 V MCU domain and 5 V analog monitor domain with default-low safety state. Use Value: Ensures open-circuit or unpowered faults default to safe low state, preventing unintended cell balancing activation. |
| Industrial Fieldbus Interface | Hybrid Electric Vehicle Onboard Charger |
Use Scenario: Signal isolation in RS-485/RS-422 transceiver interfaces exposed to factory floor EMI. IC Role / Device Role / Timing Role: Dual-channel isolator separating controller TX/RX lines from bus-side transceiver, with >25 kV/μs CMTI. Use Value: Maintains data integrity during 4 kV ESD events and 100 V/m RF fields without bit errors or latch-up. |
Use Scenario: Isolating digital control signals between AC/DC converter controller and DC/DC auxiliary supply in OBC modules. IC Role / Device Role / Timing Role: Reinforced-isolation component meeting IEC 62368-1 basic + reinforced requirements for mains-connected equipment. Use Value: Enables single-component isolation solution compliant with reinforced insulation (VIORM = 565 VPEAK) and pollution degree 2 layout rules. |
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 | 2.5 kVRMS isolation rating; 150 Mbps max data rate; default-high output; different pinout (VIA/VOA swapped). | Lacks AEC-Q100 qualification and reinforced insulation (VIORM = 400 VPEAK); suitable for non-automotive industrial use only. | Select when higher speed is required and safety certification is not mandated. |
| ISO7721DWR | 5000 VRMS isolation; 100 Mbps; default-high output; 8-pin SOIC but different pin mapping (GND2 at Pin 5 vs. Pin 5 on ADUM1286ARZ-RL7). | Higher isolation voltage but no AEC-Q100 grade; VIORM = 800 VPEAK; requires layout revision due to pinout mismatch. | Select when enhanced creepage/clearance (>8 mm) and higher surge immunity are prioritized over automotive qualification. |
Compared with SI8621ED-B-IS and ISO7721DWR, ADUM1286ARZ-RL7 uniquely combines AEC-Q100 Grade 1 qualification, default-low output, and VDE-reinforced insulation in an industry-standard SOIC-N footprint-enabling drop-in compliance for automotive BMS and motor control without redesign.
Availability
ADUM1286ARZ-RL7 is available at Aetrix Electronics and suitable for motor drive control, battery management systems, industrial fieldbus interfaces, and hybrid electric vehicle onboard chargers requiring stable component supply across extended temperature and safety-critical operating conditions.
Supply support for ADUM1286ARZ-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 is designed for high-reliability galvanic isolation in noise-immune digital interfaces, targeting applications demanding precise timing, safety certification, and long-term stability under thermal stress.
FAQ
What is the default output state of ADUM1286ARZ-RL7?
The ADUM1286ARZ-RL7 has a default-low output state: when either VDD1 or VDD2 is unpowered, VOA and VOB default to logic low. This behavior is confirmed in Table 25 of the Rev. E datasheet and distinguishes ADUM1286ARZ-RL7 from ADUM1280/ADUM1281 (default-high). The refresh circuit ensures this state is maintained within 1.6 µs after power restoration.
Does ADUM1286ARZ-RL7 support level translation between 3.3 V and 5 V domains?
Yes, ADUM1286ARZ-RL7 supports mixed-supply operation: VDD1 and VDD2 can be independently set to 3.3 V or 5 V (within 3.135 V–5.5 V range), enabling bidirectional level translation. Tables 7 and 10 in the datasheet specify propagation delay (20–27 ns) and supply current under 5 V/3.3 V and 3.3 V/5 V configurations.
Is ADUM1286ARZ-RL7 qualified for automotive applications?
Yes, ADUM1286ARZ-RL7 is AEC-Q100 qualified for automotive applications (Grade 1: −40°C to +125°C). This qualification is explicitly stated in the Features section and Automotive Products section of the Rev. E datasheet, confirming suitability for battery monitors, motor drives, and onboard chargers in HEV/EV platforms.
What safety certifications does ADUM1286ARZ-RL7 hold?
ADUM1286ARZ-RL7 holds UL 1577 (3000 VRMS, 1 min), IEC/EN/CSA 62368-1, IEC/CSA 61010-1, and DIN EN IEC 60747-17 (VDE 0884-17) approvals. It is rated for reinforced insulation with VIORM = 565 VPEAK and maximum working voltage VIOWM = 400 VRMS, as verified in Tables 14 and 16 of the datasheet.
What is the maximum common-mode transient immunity (CMTI) of ADUM1286ARZ-RL7?
The ADUM1286ARZ-RL7 delivers >25 kV/μs common-mode transient immunity (CMTI), tested per IEC 61000-4-4 with VCM = 1000 V and transient magnitude = 800 V. This value is specified in Tables 3, 6, 9, and 12 across all supply configurations and is critical for reliable operation in high-dv/dt motor drive and inverter applications.
ADUM1286ARZ-RL7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- iCoupler®
- 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:
- -
- Qualification:
- -
- Operating Temperature:
- -40°C ~ 125°C
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
ADUM1286ARZ-RL7 FAQ
1.How can I place an order for ADUM1286ARZ-RL7 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADUM1286ARZ-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 ADUM1286ARZ-RL7 reliable?
The price and inventory of ADUM1286ARZ-RL7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADUM1286ARZ-RL7 is usually 5 days.
3.What payment methods are accepted for ADUM1286ARZ-RL7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADUM1286ARZ-RL7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADUM1286ARZ-RL7?
ADUM1286ARZ-RL7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADUM1286ARZ-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 ADUM1286ARZ-RL7?
For technical support, including ADUM1286ARZ-RL7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADUM1286ARZ-RL7 requirements.
6.How does Aetrix verify that ADUM1286ARZ-RL7 is sourced from the original manufacturer or authorized distributors?
All ADUM1286ARZ-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 ADUM1286ARZ-RL7 meets industry standards.
7.What is the process for return or replacement of ADUM1286ARZ-RL7?
All ADUM1286ARZ-RL7 units undergo pre-shipment inspection (PSI). If there is an issue with ADUM1286ARZ-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 ADUM1286ARZ-RL7 part is unused and in its original packaging.
Return procedure for ADUM1286ARZ-RL7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ADUM1286ARZ-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
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
