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Analog Devices Inc. ADUM1401WSRWZ-RL
- Part No.:
- ADUM1401WSRWZ-RL
- Manufacturer:
- Analog Devices Inc.
- Category:
- Digital Isolators
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
ADUM1401WSRWZ-RL.pdf
- Description:
- DGTL ISO 2500VRMS 4CH GP 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,286
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Product details
Overview
ADUM1401WSRWZ-RL from Analog Devices is a quad-channel, bidirectional digital isolator based on iCoupler® transformer technology, rated for automotive applications (AEC-Q100 Grade 2), operating from 2.7 V to 5.5 V per side, supporting up to 90 Mbps data rate with ≤2 ns pulse width distortion and >25 kV/μs common-mode transient immunity. It enables SPI isolation and level translation between 3 V and 5 V domains in battery management systems.
For engineers reviewing the ADUM1401WSRWZ-RL datasheet, ADUM1401WSRWZ-RL pinout, ADUM1401WSRWZ-RL application, or ADUM1401WSRWZ-RL equivalent, key selection criteria include automotive qualification, channel direction configuration (2/2), 16-lead SOIC wide-body package, and CRW-grade timing performance at 125°C ambient.
Technical Context
The ADUM1401WSRWZ-RL implements two input channels on Side A (pins 1–2, 15–16) and two output-enable-controlled output channels on Side B (pins 4–5, 12–13), enabling asymmetric bidirectional communication across the isolation barrier. Its monolithic air-core transformer coupling eliminates LED aging and CTR drift, delivering stable propagation delay skew ≤10 ns and channel-to-channel matching ≤5 ns (opposing-directional) at 90 Mbps.
It integrates a patented refresh circuit ensuring DC correctness during idle periods or single-supply operation, and supports mixed-voltage operation (e.g., 5 V on VDD1, 3 V on VDD2) without external level shifters - critical for isolated CAN or SPI interfaces interfacing microcontrollers and sensors with differing I/O voltages.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Isolation Rating | 2500 V rms (UL 1577, 1 min); VIORM = 560 V peak (DIN EN IEC 60747-17) |
| Max Data Rate | 90 Mbps (NRZ) - supports high-speed SPI clocking up to 45 MHz |
| Pulse Width Distortion | ≤2 ns - ensures clean clock/data recovery in timing-critical interfaces |
| Operating Temperature | −40°C to +125°C - qualified for under-hood automotive use |
| Supply Voltage Range | 2.7 V to 5.5 V per side - enables 3 V/5 V level translation across barrier |
| Common-Mode Transient Immunity | >25 kV/μs - maintains signal integrity in noisy motor drive or power converter environments |
| Propagation Delay Skew | ≤10 ns - minimizes timing misalignment between isolated SPI MISO/MOSI paths |
Pinout & Package
ADUM1401WSRWZ-RL uses a 16-lead SOIC wide-body (7.5 mm body width) package compliant with RoHS and automotive reliability standards.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 15, 16 | Side A Inputs (INA, INB, INC, IND) | Logic inputs referenced to VDD1; accept 3 V or 5 V CMOS levels |
| 4, 5, 12, 13 | Side B Outputs (OUTA, OUTB, OUTC, OUTD) | CMOS outputs referenced to VDD2; driven only when respective OE pin is low |
| 3, 6, 11, 14 | Side B Output Enables (OEA, OEB, OEC, OED) | Active-low enables per channel; allow independent tri-state control of each output |
| 7, 10 | VDD1, VDD2 | Independent supplies for each side; support mixed-voltage operation |
| 8, 9 | GND1, GND2 | Separate ground references; define isolation barrier boundaries |
Key Features
| Feature | Design Value |
|---|---|
| Automotive qualification | AEC-Q100 Grade 2 (−40°C to +125°C) - certified for safety-critical vehicle subsystems |
| Bidirectional channel configuration | 2-input / 2-output-enable architecture - matches SPI master-slave topology with independent MISO/MOSI control |
| DC-correct refresh circuit | Maintains output state during zero-crossing or static input conditions - eliminates need for external watchdog timers |
| Low dynamic power | 0.10 mA/Mbps (input) + 0.03 mA/Mbps (output) at 3 V - reduces thermal load in compact ECUs |
| High CMTI immunity | >25 kV/μs - prevents glitches during fast-switching IGBT gate drive noise coupling |
Applications
| SPI Isolation in Battery Management Systems | Isolated CAN Transceiver Interface |
|---|---|
Use Scenario: Isolating SPI communication between MCU and multi-cell battery monitor IC (e.g., LTC6813) in EV traction battery packs. IC Role / Device Role / Timing Role: ADUM1401WSRWZ-RL provides galvanic separation for MOSI, MISO, SCLK, and CS signals while maintaining sub-2 ns pulse width distortion for reliable 10+ MHz SPI clocking. Use Value: Enables safe, high-speed diagnostics and cell voltage reading across 400–800 V battery stacks without compromising timing margin or introducing bit errors. | Use Scenario: Isolating TXD/RXD lines and supply domains between CAN controller (3.3 V) and CAN transceiver (5 V) in automotive body control modules. IC Role / Device Role / Timing Role: ADUM1401WSRWZ-RL acts as a dual-channel level-translating isolator with independent output enables, supporting CAN FD signaling up to 5 Mbps. Use Value: Eliminates ground loop currents and protects controller-side logic from bus-level transients while enabling mixed-voltage interoperability. |
| Industrial PLC Digital I/O Isolation | Motor Drive Feedback Signal Isolation |
Use Scenario: Isolating 24 V digital input/output signals from field devices (sensors, actuators) to 3.3 V/5 V PLC logic controllers. IC Role / Device Role / Timing Role: ADUM1401WSRWZ-RL routes four discrete I/O channels across the barrier, with output enables allowing software-configurable sourcing/sinking per channel. Use Value: Provides reinforced insulation (2500 V rms) and >25 kV/μs CMTI to withstand industrial EMI, reducing spurious trips and improving system uptime. | Use Scenario: Isolating encoder A/B/Z quadrature signals and resolver excitation feedback from high-noise motor inverter stages to position controller ASICs. IC Role / Device Role / Timing Role: ADUM1401WSRWZ-RL delivers matched propagation delays (<5 ns skew) across all four channels to preserve phase relationships in high-resolution position sensing. Use Value: Maintains <0.1° angular error at 10,000 RPM by preserving edge alignment between differential encoder channels across isolation boundary. |
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-IS | Capacitive isolation; 100 Mbps max data rate; no output enable pins; 16-pin SOIC narrow (3.9 mm) | Lacks per-channel OE control; narrower package may limit creepage in high-voltage designs | Prefer ADUM1401WSRWZ-RL when output tri-state control or automotive qualification is required |
| ISO7741FQDWWRQ1 | Capacitive isolation; AEC-Q100 Grade 1 (−40°C to +125°C); 100 Mbps; no output enable | Higher temp grade but no OE functionality; different pinout incompatible with existing layouts | Choose ADUM1401WSRWZ-RL for pin-compatible replacement where OE-driven bus sharing is needed |
Compared with SI8641ED-IS and ISO7741FQDWWRQ1, ADUM1401WSRWZ-RL uniquely combines automotive qualification, per-channel output enable, and transformer-based noise immunity - making it the only option among the three that supports dynamic bus arbitration in isolated SPI daisy-chains without layout redesign.
Availability
ADUM1401WSRWZ-RL is available at Aetrix Electronics and suitable for automotive battery management, industrial PLC I/O, motor drive feedback, and isolated CAN interface applications requiring stable component supply and long-term lifecycle assurance.
Supply support for ADUM1401WSRWZ-RL 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 is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving precision instrumentation, industrial automation, and automotive markets since 1965.
The ADuM140x family was designed specifically for robust, high-speed galvanic isolation in safety-critical automotive and industrial systems where reliability, timing accuracy, and regulatory compliance are non-negotiable.
FAQ
What is the maximum operating temperature for ADUM1401WSRWZ-RL?
ADUM1401WSRWZ-RL is rated for continuous operation from −40°C to +125°C ambient and is AEC-Q100 Grade 2 qualified. This rating is validated per the manufacturer's automotive test plan and applies across full supply voltage range (2.7 V to 5.5 V per side) and data rates up to 90 Mbps. The device maintains specified pulse width distortion and propagation delay skew within this range.
Does ADUM1401WSRWZ-RL support level translation between 3 V and 5 V domains?
Yes, ADUM1401WSRWZ-RL supports true bidirectional level translation: VDD1 can be 3 V while VDD2 is 5 V (or vice versa), with input thresholds scaling accordingly (VIH = 2.0 V at 5 V side, 1.6 V at 3 V side). This eliminates external level shifters in mixed-voltage SPI or UART interfaces, and is explicitly characterized in Tables 3 and 4 of the Rev. M datasheet.
How many channels in ADUM1401WSRWZ-RL are input-only versus output-enable-controlled?
ADUM1401WSRWZ-RL has two input-only channels on Side A (pins 1, 2, 15, 16) and two output-enable-controlled channels on Side B (pins 4, 5, 12, 13), each with dedicated active-low OE pins (pins 3, 6, 11, 14). This 2/2 configuration matches standard SPI master-slave topologies and allows independent tri-state control - a defining feature of the ADUM1401 variant within the ADuM140x family.
What safety certifications does ADUM1401WSRWZ-RL hold?
ADUM1401WSRWZ-RL is certified to UL 1577 (2500 V rms, 1 min), DIN EN IEC 60747-17 (VDE 0884-17, VIORM = 560 V peak), and multiple end-equipment standards including IEC/EN/CSA 62368-1, EN 60950-1, IEC/CSA 60601-1, and IEC/CSA 61010-1. These approvals are documented in the "Regulatory Information" section (p. 20) and "Insulation and Safety Related Specifications" (p. 21) of the Rev. M datasheet.
Can ADUM1401WSRWZ-RL maintain DC logic states without input toggling?
Yes, ADUM1401WSRWZ-RL incorporates a patented refresh circuit that continuously monitors input states and retransmits static logic levels across the isolation barrier - ensuring correct DC output even during prolonged input inactivity or when one side's supply is unpowered. This behavior is guaranteed across the full temperature and voltage range and is a core differentiator from optocouplers and basic capacitive isolators.
ADUM1401WSRWZ-RL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 16-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tape & Reel (TR)
- 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:
- 1Mbps
- Propagation Delay tpLH / tpHL (Max):
- 100ns, 100ns
- Pulse Width Distortion (Max):
- 40ns
- Rise / Fall Time (Typ):
- 2.5ns, 2.5ns
- Voltage - Supply:
- 2.7V ~ 5.5V
- Grade:
- Automotive
- Qualification:
- -
- Operating Temperature:
- -40°C ~ 125°C
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SOIC
ADUM1401WSRWZ-RL FAQ
1.How can I place an order for ADUM1401WSRWZ-RL through Aetrix?
Please submit a Request for Quotation (RFQ) for ADUM1401WSRWZ-RL 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 ADUM1401WSRWZ-RL reliable?
The price and inventory of ADUM1401WSRWZ-RL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADUM1401WSRWZ-RL is usually 5 days.
3.What payment methods are accepted for ADUM1401WSRWZ-RL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADUM1401WSRWZ-RL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADUM1401WSRWZ-RL?
ADUM1401WSRWZ-RL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADUM1401WSRWZ-RL 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 ADUM1401WSRWZ-RL?
For technical support, including ADUM1401WSRWZ-RL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADUM1401WSRWZ-RL requirements.
6.How does Aetrix verify that ADUM1401WSRWZ-RL is sourced from the original manufacturer or authorized distributors?
All ADUM1401WSRWZ-RL 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 ADUM1401WSRWZ-RL meets industry standards.
7.What is the process for return or replacement of ADUM1401WSRWZ-RL?
All ADUM1401WSRWZ-RL units undergo pre-shipment inspection (PSI). If there is an issue with ADUM1401WSRWZ-RL, 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 ADUM1401WSRWZ-RL part is unused and in its original packaging.
Return procedure for ADUM1401WSRWZ-RL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ADUM1401WSRWZ-RL 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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