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Analog Devices Inc. ADUM1401WTRWZ35
- Part No.:
- ADUM1401WTRWZ35
- Manufacturer:
- Analog Devices Inc.
- Category:
- Digital Isolators
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
ADUM1401WTRWZ35.pdf
- Description:
- ADUM1401 - QUAD-CHANNEL DIGITAL
- Quantity:
- Payment:
- Shipping:
Inventory:354
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Product details
Overview
ADUM1401WTRWZ35 from Analog Devices is a quad-channel, automotive-grade digital isolator using iCoupler® transformer-based isolation technology. It provides bidirectional signal isolation with 90 Mbps maximum data rate, 2 ns max pulse width distortion, and 125°C operating temperature support. It enables SPI interface isolation in battery management systems where high common-mode transient immunity (>25 kV/μs) and 5 V/3 V level translation are required.
For engineers reviewing the ADUM1401WTRWZ35 datasheet, ADUM1401WTRWZ35 pinout, ADUM1401WTRWZ35 application, or ADUM1401WTRWZ35 equivalent, key selection criteria include channel direction configuration (2 forward / 2 reverse), automotive AEC-Q100 qualification, SOIC-16WB package compatibility, and guaranteed 90 Mbps operation at 125°C.
Technical Context
The ADUM1401WTRWZ35 implements two input channels on Side 1 (VIA, VIB) and two output channels on Side 2 (VOC, VOD), with dedicated enable terminals (VE1, VE2) per side. Its iCoupler architecture replaces optocoupler LEDs/photodiodes with monolithic air-core transformers and CMOS transceivers, eliminating current transfer ratio drift and lifetime degradation.
It supports asymmetric supply operation (2.7 V–5.5 V on either side), enabling 3 V ↔ 5 V level translation across the isolation barrier. The patented refresh circuit ensures DC-correct output states during idle periods or single-supply loss - a critical requirement for automotive fail-safe communication links.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Max Data Rate | 90 Mbps (NRZ) - supports high-speed SPI clocking up to 45 MHz without pulse distortion degradation |
| Pulse Width Distortion | ≤2 ns - ensures minimal duty cycle error in PWM or clock forwarding applications |
| Channel-to-Channel Matching | ≤5 ns (opposing-directional) - maintains timing alignment between isolated control and feedback paths |
| Common-Mode Transient Immunity | >25 kV/μs - sustains reliable operation in noisy automotive powertrain and BMS environments |
| Operating Temperature | −40°C to +125°C - qualified per AEC-Q100 Grade 1 for under-hood and battery-pack deployment |
| Isolation Rating | 2500 V rms (UL 1577), VIORM = 560 V peak (DIN V VDE V 0884-10) - meets reinforced insulation requirements |
| Supply Voltage Range | 2.7 V to 5.5 V per side - enables direct interfacing with 3.3 V microcontrollers and 5 V analog front-ends |
Pinout & Package
ADUM1401WTRWZ35 uses a 16-lead SOIC wide-body (SOIC_WB) package with 7.5 mm body width and 1.27 mm pitch, compliant with RoHS and automotive reflow profiles.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3, 4 (VIA, VIB, VIC, VID) | Logic Input/Output Terminals | VIA/VIB: inputs on Side 1; VIC/VID: outputs on Side 2 - defines 2-forward/2-reverse channel direction |
| 5, 6 (VE1, VE2) | Output Enable Controls | Active-low enables for Side 1 and Side 2 outputs - allows independent tri-state control of isolated domains |
| 7, 14 (GND1, GND2) | Isolated Ground References | Separate ground returns for primary and secondary sides - essential for noise rejection and safety isolation |
| 8, 13 (VDD1, VDD2) | Power Supplies | Independent 2.7–5.5 V supplies per side - enables voltage translation and fault containment |
| 9–12 (VOA, VOB, VOC, VOD) | Logic Outputs/Inputs | VOA/VOB: outputs on Side 1; VOC/VOD: outputs on Side 2 - matches ADUM1401 functional block diagram |
Key Features
| Feature | Design Value |
|---|---|
| Automotive qualification | AEC-Q100 Grade 1 certified - validated for continuous operation at 125°C ambient in automotive ECUs and BMS |
| Bidirectional channel configuration | 2 forward + 2 reverse channels - supports full-duplex SPI isolation without external direction control logic |
| DC-correct refresh circuit | Maintains valid output state during zero-input transitions or single-side power loss - eliminates watchdog timer dependency |
| Low dynamic power | 0.19 mA/Mbps input + 0.05 mA/Mbps output - reduces thermal load in sealed automotive enclosures |
| High CMTI immunity | >25 kV/μs at both logic-high and logic-low output states - prevents false triggering during fast-switching inverter transients |
Applications
| Motor Control Interface | SPI Isolation for Data Converters |
|---|---|
|
Use Scenario: Isolating gate driver control signals and current-sense feedback in 48 V mild-hybrid inverter modules. IC Role / Device Role / Timing Role: ADUM1401WTRWZ35 provides reinforced isolation between MCU PWM outputs (Side 1) and gate driver inputs (Side 2), while returning isolated current-sense ADC data on reverse channels. Use Value: Enables precise 90 Mbps timing alignment between control and feedback paths, reducing current-loop latency by ≤5 ns versus optocouplers. |
Use Scenario: Isolating high-resolution SAR ADC serial interfaces (e.g., AD7682) in battery cell monitoring units. IC Role / Device Role / Timing Role: ADUM1401WTRWZ35 separates 3.3 V ADC SPI interface (Side 2) from 5 V host processor (Side 1), supporting daisy-chained readback at 20 MSPS effective throughput. Use Value: Maintains <2 ns pulse width distortion across all four channels, preserving ADC sample timing integrity and minimizing aperture jitter. |
| Automotive RS-485 Transceiver Isolation | EV Battery Management System (BMS) Communication |
|
Use Scenario: Galvanic isolation of RS-485 differential bus signals between vehicle domain controllers and sensor nodes. IC Role / Device Role / Timing Role: ADUM1401WTRWZ35 isolates TX/RX pairs and DE/RE control lines of isolated RS-485 transceivers (e.g., ADM2587E), with separate enable control per side. Use Value: Supports 20 Mbps RS-485 data rates with guaranteed 2 ns channel matching - prevents bit skew in multi-node CAN-FD coexistence networks. |
Use Scenario: Interfacing distributed cell monitor ICs (e.g., LTC6813) to central BMS controller across high-voltage battery stacks (up to 1000 V). IC Role / Device Role / Timing Role: ADUM1401WTRWZ35 delivers reinforced isolation for UART and GPIO lines between 3.3 V monitor ICs (Side 2) and 5 V controller (Side 1), with independent enable for fault containment. Use Value: Withstands >25 kV/μs transients induced by contactor switching, preventing communication lockup during pack reconfiguration events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad-channel digital isolator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SI8641ED-B-IS | Capacitive isolation; 100 Mbps max; no integrated refresh; 105°C max operating temperature | Lacks AEC-Q100 qualification and 125°C support; lower CMTI (20 kV/μs) | Acceptable for non-automotive industrial SPI isolation where extended temperature range is not required |
| ISO6741QDWR | Capacitive isolation; 50 Mbps max; 125°C rating; AEC-Q100 Grade 1; no output enable pins | Fixed 4-channel unidirectional (all inputs on one side); no per-side enable control | Suitable when only one-directional isolation is needed and board space permits larger SOIC-16 package |
Compared with SI8641ED-B-IS and ISO6741QDWR, ADUM1401WTRWZ35 uniquely combines AEC-Q100 Grade 1, 90 Mbps performance, bidirectional channel flexibility, and dual output-enable pins - making it the only option supporting fail-safe, full-duplex SPI isolation in automotive BMS mainboards.
Availability
ADUM1401WTRWZ35 is available at Aetrix Electronics and suitable for automotive battery management systems, motor control inverters, and isolated RS-485 fieldbus nodes requiring stable component supply across extended temperature and regulatory-compliant lifecycles.
Supply support for ADUM1401WTRWZ35 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 semiconductor company specializing in high-performance analog, mixed-signal, and digital signal processing technologies for precision instrumentation, industrial automation, and automotive systems.
The ADuM140x family was designed specifically for high-reliability, high-speed digital isolation in automotive and industrial environments - emphasizing AEC-Q100 compliance, low-power operation, and robust transient immunity.
FAQ
What is the channel configuration of ADUM1401WTRWZ35?
ADUM1401WTRWZ35 has a 2-forward / 2-reverse channel configuration: VIA and VIB are inputs on Side 1, while VOC and VOD are outputs on Side 2. This enables full-duplex SPI isolation without external direction control. The ADUM1401WTRWZ35 pinout reflects this arrangement in its functional block diagram and is distinct from ADUM1400 (4-forward) and ADUM1402 (2-forward/2-reverse with swapped output assignment).
Does ADUM1401WTRWZ35 support 3.3 V and 5 V supply combinations?
Yes, ADUM1401WTRWZ35 supports mixed-supply operation: VDD1 may be 3.3 V while VDD2 is 5 V (or vice versa), enabling seamless level translation across the isolation barrier. This is explicitly specified in the "Mixed 3 V/5 V or 5 V/3 V" electrical characteristics tables and validated over the full −40°C to +125°C range for the ADUM1401WTRWZ35 automotive grade.
What safety certifications apply to ADUM1401WTRWZ35?
ADUM1401WTRWZ35 carries UL 1577 (2500 V rms, 1 min), VDE V 0884-10 (VIORM = 560 V peak), CSA 5A, and TÜV IEC/EN/UL/CSA 61010-1 approvals. These certifications are documented in the ADuM1400/ADuM1401/ADuM1402 Rev. L datasheet Section "Regulatory Information" and confirm reinforced insulation suitability for automotive and industrial safety-critical applications.
How does the refresh feature in ADUM1401WTRWZ35 improve system reliability?
The ADUM1401WTRWZ35 incorporates a patented refresh circuit that periodically samples and retransmits the last valid input state when no transitions occur - ensuring DC-correct output even during prolonged static conditions or if power is lost on one side. This eliminates the need for external watchdog timers or refresh pulses, a key advantage over optocouplers and some competing digital isolators.
Is ADUM1401WTRWZ35 pin-compatible with other ADuM140x variants?
No - ADUM1401WTRWZ35 is not pin-compatible with ADUM1400 or ADUM1402 due to differing channel direction assignments and pin functions. Figure 2 in the datasheet confirms the unique VIA/VIB input and VOC/VOD output mapping for ADUM1401. Substituting without PCB revision will result in incorrect signal routing and functional failure.
ADUM1401WTRWZ35 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 16-SOIC (0.295", 7.50mm Width)
- Packaging:
- Bulk
- 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):
- 32ns, 32ns
- Pulse Width Distortion (Max):
- 3ns
- Rise / Fall Time (Typ):
- 2.5ns, 2.5ns
- Voltage - Supply:
- 2.7V ~ 5.5V
- Grade:
- -
- Qualification:
- -
- Operating Temperature:
- -40°C ~ 125°C
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SOIC
ADUM1401WTRWZ35 FAQ
1.How can I place an order for ADUM1401WTRWZ35 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADUM1401WTRWZ35 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 ADUM1401WTRWZ35 reliable?
The price and inventory of ADUM1401WTRWZ35 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADUM1401WTRWZ35 is usually 5 days.
3.What payment methods are accepted for ADUM1401WTRWZ35?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADUM1401WTRWZ35 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADUM1401WTRWZ35?
ADUM1401WTRWZ35 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADUM1401WTRWZ35 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 ADUM1401WTRWZ35?
For technical support, including ADUM1401WTRWZ35 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADUM1401WTRWZ35 requirements.
6.How does Aetrix verify that ADUM1401WTRWZ35 is sourced from the original manufacturer or authorized distributors?
All ADUM1401WTRWZ35 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 ADUM1401WTRWZ35 meets industry standards.
7.What is the process for return or replacement of ADUM1401WTRWZ35?
All ADUM1401WTRWZ35 units undergo pre-shipment inspection (PSI). If there is an issue with ADUM1401WTRWZ35, 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 ADUM1401WTRWZ35 part is unused and in its original packaging.
Return procedure for ADUM1401WTRWZ35:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ADUM1401WTRWZ35 Tags
-
ISO1212DBQR
Texas Instruments
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ISO6721BDR
Texas Instruments
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SI8710AC-B-ISR
Skyworks Solutions Inc.
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ISO7720FDR
Texas Instruments
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ISO7721DR
Texas Instruments
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ISO7721FDR
Texas Instruments
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SI8710CC-B-ISR
Skyworks Solutions Inc.
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ISO6741FQDWRQ1
Texas Instruments
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ISO7721DWVR
Texas Instruments
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ISO7762FDBQR
Texas Instruments
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ISO7741DWR
Texas Instruments
-
ISO7741FDWR
Texas Instruments
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