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Analog Devices Inc. ADUM1401WSRWZ
- Part No.:
- ADUM1401WSRWZ
- Manufacturer:
- Analog Devices Inc.
- Category:
- Digital Isolators
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
ADUM1401WSRWZ.pdf
- Description:
- DGTL ISO 2500VRMS 4CH GP 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,480
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Product details
Overview
ADUM1401WSRWZ from Analog Devices is a quad-channel, automotive-qualified digital isolator based on iCoupler® transformer technology, providing bidirectional signal isolation with 90 Mbps data rate, <2 ns pulse width distortion, and 560 VPEAK reinforced insulation. It operates across 2.7 V to 5.5 V supplies on both sides, enabling 3 V/5 V level translation in industrial and automotive interface applications such as SPI isolation and RS-485 transceiver protection.
For engineers reviewing the ADUM1401WSRWZ datasheet, ADUM1401WSRWZ pinout, ADUM1401WSRWZ application, or ADUM1401WSRWZ equivalent, this page delivers verified specifications including channel configuration (2/2 directional split), automotive-grade temperature range (−40°C to +125°C), safety certifications (UL 2500 VRMS, VDE 560 VPEAK), and precise timing metrics critical for real-time control and high-noise bus systems.
Technical Context
The ADUM1401WSRWZ implements four independent isolation channels using monolithic air-core transformers, eliminating LED/photodiode aging and CTR drift inherent in optocouplers. Its architecture supports mixed-voltage operation (e.g., 5 V on VDD1 side, 3 V on VDD2 side) while maintaining deterministic propagation delay (18–32 ns typical at 90 Mbps) and guaranteed dc correctness via patented refresh circuitry.
It features output enable functionality per side (EN1/EN2), supports NRZ encoding up to 90 Mbps, and delivers >25 kV/µs common-mode transient immunity-critical for motor drive gate drivers and isolated power supply feedback loops where fast edge integrity must be preserved across noisy ground domains.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Channels | 4 independent unidirectional channels: 2 input-side-to-output-side (A/B), 2 output-side-to-input-side (C/D) |
| Max Data Rate | 90 Mbps (CRW grade); enables high-speed SPI clocking and isolated ADC/DAC interfaces without oversampling penalties |
| Pulse Width Distortion | <2 ns max; preserves duty cycle fidelity for PWM signals and clock distribution across isolation barrier |
| Propagation Delay Skew | 10 ns max (codirectional); ensures tight timing alignment between parallel data lanes in isolated serial buses |
| Isolation Rating | 2500 VRMS for 1 min (UL 1577), 560 VPEAK working voltage (DIN EN IEC 60747-17); certified for reinforced insulation in automotive ECUs |
| Operating Temperature | −40°C to +125°C; qualified per AEC-Q100 Grade 1, suitable for under-hood and battery management systems |
| Supply Voltage Range | 2.7 V to 5.5 V on both VDD1 and VDD2; enables seamless 3.3 V ↔ 5 V level translation without external logic |
Pinout & Package
ADUM1401WSRWZ is housed in a 16-lead SOIC wide-body package (7.5 mm body width, 10.3 mm length) with creepage/clearance ≥8.3 mm, compliant with reinforced insulation requirements for automotive and industrial applications.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD1 | Primary-side power supply | Supplies input-side logic (pins A1–B2); accepts 2.7–5.5 V; decoupling required within 10 mm |
| GND1 | Primary-side ground reference | Return path for VDD1; must be separated from GND2 by ≥8.3 mm PCB creepage |
| A1, B1 | Input-side digital inputs | Drive channels 1 & 2 (VDD1 → VDD2 direction); TTL/CMOS compatible thresholds |
| A2, B2 | Output-side digital outputs | Receive channels 1 & 2 (VDD1 → VDD2 direction); drive capability: 3.2 mA sink/source |
| C1, D1 | Output-side digital inputs | Drive channels 3 & 4 (VDD2 → VDD1 direction); referenced to VDD2/GND2 |
| C2, D2 | Input-side digital outputs | Receive channels 3 & 4 (VDD2 → VDD1 direction); referenced to VDD1/GND1 |
| VDD2 | Secondary-side power supply | Supplies output-side logic (pins C1–D2); independent of VDD1; enables level-shifting |
| GND2 | Secondary-side ground reference | Return path for VDD2; galvanically isolated from GND1; defines secondary-side logic domain |
| EN1 | Primary-side output enable | Active-low control: disables A2/B2 outputs when pulled low; high-impedance state preserves downstream logic |
| EN2 | Secondary-side output enable | Active-low control: disables C2/D2 outputs when pulled low; allows independent channel gating |
Key Features
| Feature | Design Value |
|---|---|
| Automotive qualification | AEC-Q100 Grade 1 qualified (−40°C to +125°C), supporting ISO 26262 ASIL-B system integration in EV battery monitors and ADAS sensor interfaces |
| iCoupler® transformer isolation | Monolithic air-core transformers replace optocoupler LEDs/photodiodes-no CTR degradation, no lifetime derating, stable performance over temperature and time |
| Bidirectional channel split (2+2) | Two forward (A/B) and two reverse (C/D) channels enable full-duplex isolated communication (e.g., SPI with separate MOSI/MISO paths) |
| Patented refresh circuit | Maintains dc-correct output states during idle periods or single-supply loss-eliminates need for external watchdog or refresh logic |
| High CMTI | >25 kV/µs common-mode transient immunity ensures reliable operation in motor drives and inverters with fast-switching SiC/GaN FETs |
Applications
| SPI Interface Isolation | RS-485 Transceiver Protection |
|---|---|
|
Use Scenario: Isolating SPI bus between MCU and isolated ADC in battery management system (BMS). IC Role / Device Role / Timing Role: ADUM1401WSRWZ provides galvanic separation between controller and high-voltage battery stack, with dedicated A/B channels for MOSI/SCLK and C/D channels for MISO/CS. Use Value: Enables safe 100+ V common-mode voltage handling while preserving 90 Mbps SPI throughput and sub-2 ns timing skew for synchronized cell voltage sampling. |
Use Scenario: Protecting RS-485 transceiver in industrial PLC backplane against ground loop noise and ESD events. IC Role / Device Role / Timing Role: ADUM1401WSRWZ isolates UART TX/RX lines and DE/RE control signals between microcontroller and MAX1487E transceiver. Use Value: Delivers 25 kV/µs CMTI margin and 2500 VRMS isolation to prevent bus lockup during 4 kV ESD discharge or 1 kV surge transients. |
| Automotive CAN Gateway Isolation | Isolated Power Supply Feedback |
|
Use Scenario: Isolating CAN FD signals between vehicle domain controller and battery pack ECU in 48 V mild-hybrid architecture. IC Role / Device Role / Timing Role: ADUM1401WSRWZ routes CAN_H/CAN_L differential pair through two forward channels (A/B) and uses C/D for isolated fault signaling. Use Value: Supports 5 Mbps CAN FD data rates with <2 ns pulse distortion, ensuring bit-level timing compliance across 125°C ambient operation. |
Use Scenario: Providing isolated feedback for secondary-side voltage regulation in flyback converter used in automotive infotainment power supply. IC Role / Device Role / Timing Role: ADUM1401WSRWZ transmits error amplifier output across isolation barrier to primary-side PWM controller via A/B channels. Use Value: Eliminates optocoupler CTR variation, enabling stable loop response over temperature and lifetime-critical for ±1% output voltage regulation. |
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; 2.5 kVRMS rating; no refresh circuit; 150°C max operating temp | Higher speed but lower isolation rating; lacks automotive qualification; requires external refresh for dc hold | Preferred for non-automotive high-speed industrial comms where 150°C ambient exceeds ADUM1401WSRWZ spec |
| ISO6741QDWR | Capacitive isolation; 50 Mbps max; 5000 VRMS rating; AEC-Q100 Grade 0 (−40°C to +150°C); integrated LDO | Higher isolation voltage but lower data rate; includes 3.3 V LDO for secondary-side power; larger 16-pin SOIC-NC package | Selected when system requires integrated secondary-side regulation and >2500 VRMS isolation, accepting 50 Mbps speed limit |
Compared with SI8641ED-IS and ISO6741QDWR, ADUM1401WSRWZ offers the optimal balance of automotive qualification, 90 Mbps throughput, and proven iCoupler reliability for BMS and gateway applications-without requiring external refresh circuitry or sacrificing isolation robustness for speed.
Availability
ADUM1401WSRWZ is available at Aetrix Electronics and suitable for automotive battery management, industrial fieldbus isolation, and medical equipment requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for ADUM1401WSRWZ 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 ADuM140x family was designed specifically for high-reliability, high-noise immunity digital isolation in automotive and industrial control systems-emphasizing timing precision, safety certification, and long-term parametric stability over optocoupler alternatives.
FAQ
What is the maximum data rate supported by ADUM1401WSRWZ?
ADUM1401WSRWZ supports a maximum data rate of 90 Mbps under NRZ encoding with guaranteed pulse width distortion ≤2 ns. This specification applies to the CRW grade variant and is validated across the full −40°C to +125°C operating temperature range. The device maintains this performance with supply voltages from 2.7 V to 5.5 V on both sides, making it suitable for high-speed isolated SPI, USB isolators, and real-time control loops where timing integrity is critical.
Does ADUM1401WSRWZ support level translation between 3 V and 5 V logic domains?
Yes, ADUM1401WSRWZ supports true bidirectional level translation: VDD1 can operate at 3.3 V while VDD2 runs at 5 V (or vice versa), with input thresholds automatically adapting (VIH = 1.6 V at 3 V side, 2.0 V at 5 V side). This eliminates external level shifters in mixed-voltage systems such as isolated microcontroller-to-peripheral interfaces, and is explicitly characterized in Tables 2 and 3 of the datasheet for both 3 V/5 V and 5 V/3 V configurations.
What safety certifications does ADUM1401WSRWZ hold?
ADUM1401WSRWZ is certified to UL 1577 (2500 VRMS for 1 minute), DIN EN IEC 60747-17 (VDE 0884-17) with VIORM = 560 VPEAK, IEC/EN/CSA 62368-1, EN 60950-1, IEC/CSA 60601-1, IEC/CSA 61010-1, and CQC GB4943.1. These approvals confirm its suitability for reinforced insulation in automotive (AEC-Q100 Grade 1), industrial, and medical applications requiring functional safety compliance.
How does the refresh feature in ADUM1401WSRWZ ensure DC correctness?
ADUM1401WSRWZ incorporates a patented internal refresh circuit that periodically samples and retransmits the last valid input state-even when no logic transitions occur or when one supply (VDD1 or VDD2) is unpowered. This guarantees dc-correct output levels during idle periods or partial-power-loss conditions, eliminating the need for external refresh timers or watchdog circuits commonly required with competing isolators.
What is the channel configuration of ADUM1401WSRWZ?
ADUM1401WSRWZ has a 2/2 bidirectional channel configuration: channels A and B transmit from VDD1 side to VDD2 side (forward), while channels C and D transmit from VDD2 side to VDD1 side (reverse). This enables full-duplex isolated communication-for example, MOSI/SCLK on A/B and MISO/CS on C/D in SPI systems-without requiring two separate isolator devices.
ADUM1401WSRWZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 16-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tube
- 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 FAQ
1.How can I place an order for ADUM1401WSRWZ through Aetrix?
Please submit a Request for Quotation (RFQ) for ADUM1401WSRWZ 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 reliable?
The price and inventory of ADUM1401WSRWZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADUM1401WSRWZ is usually 5 days.
3.What payment methods are accepted for ADUM1401WSRWZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADUM1401WSRWZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADUM1401WSRWZ?
ADUM1401WSRWZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADUM1401WSRWZ 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?
For technical support, including ADUM1401WSRWZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADUM1401WSRWZ requirements.
6.How does Aetrix verify that ADUM1401WSRWZ is sourced from the original manufacturer or authorized distributors?
All ADUM1401WSRWZ 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 meets industry standards.
7.What is the process for return or replacement of ADUM1401WSRWZ?
All ADUM1401WSRWZ units undergo pre-shipment inspection (PSI). If there is an issue with ADUM1401WSRWZ, 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 part is unused and in its original packaging.
Return procedure for ADUM1401WSRWZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ADUM1401WSRWZ Tags
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