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Analog Devices Inc. ADUM1402WSRWZ-RL
- Part No.:
- ADUM1402WSRWZ-RL
- Manufacturer:
- Analog Devices Inc.
- Category:
- Digital Isolators
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
ADUM1402WSRWZ-RL.pdf
- Description:
- DGTL ISO 2500VRMS 4CH GP 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:875
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Product details
Overview
ADUM1402WSRWZ-RL from Analog Devices is a quad-channel, automotive-grade digital isolator using iCoupler® transformer-based isolation technology. It supports bidirectional signal transmission across the isolation barrier with 90 Mbps maximum data rate, <2 ns pulse width distortion, and 125°C operating temperature. It enables 3 V/5 V level translation and features output enable functionality for system-level power management in high-noise industrial and automotive interfaces.
For engineers reviewing the ADUM1402WSRWZ-RL datasheet, ADUM1402WSRWZ-RL pinout, ADUM1402WSRWZ-RL application, or ADUM1402WSRWZ-RL equivalent, this page delivers verified specifications, validated pin functions, confirmed automotive qualification (AEC-Q100), precise timing parameters (tPSKCD ≤ 2 ns), and real-world use context for SPI, RS-485, and fieldbus isolation designs.
Technical Context
The ADUM1402WSRWZ-RL implements four independent unidirectional channels - two input-only on side 1 (VDD1), two output-only on side 2 (VDD2) - with integrated refresh circuitry ensuring DC correctness during idle or single-supply conditions. Its monolithic air-core transformer architecture eliminates LED/photodiode aging and CTR drift inherent in optocouplers.
It operates across 2.7 V to 5.5 V on both sides, enabling mixed-voltage interfacing (e.g., 3.3 V MCU to 5 V transceiver), and meets stringent automotive safety requirements including UL 1577 (2500 V rms), DIN EN IEC 60747-17 (VIORM = 560 V peak), and IEC/CSA 60601-1 for medical isolation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Max Data Rate | 90 Mbps (NRZ) - supports high-speed SPI, CAN FD gateways, and industrial Ethernet PHY isolation without oversampling. |
| Pulse Width Distortion | <2 ns - preserves signal duty cycle integrity critical for clock forwarding and PWM control signals. |
| Channel-to-Channel Matching | <2 ns codirectional (tPSKCD) - ensures deterministic timing alignment across parallel data lanes (e.g., 4-bit bus isolation). |
| Common-Mode Transient Immunity | >25 kV/µs - maintains signal integrity in high-dV/dt environments like motor drives and EV battery management systems. |
| Operating Temperature | −40°C to +125°C - qualified per AEC-Q100 Grade 1, suitable for under-hood automotive ECUs and industrial PLCs. |
| Isolation Rating | 2500 V rms (UL 1577), VIORM = 560 V peak (DIN EN IEC 60747-17) - meets reinforced insulation requirements for functional safety applications. |
| Supply Voltage Range | 2.7 V to 5.5 V on both sides - enables seamless 3.3 V ↔ 5 V level translation without external level shifters. |
Pinout & Package
ADUM1402WSRWZ-RL uses 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 standards.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD1 | Primary-side power supply | Supplies logic and isolation circuitry for inputs A, B; accepts 2.7–5.5 V, enabling interface with 3.3 V or 5 V controllers. |
| GND1 | Primary-side ground reference | Return path for VDD1; must be isolated from GND2 with ≥8.3 mm PCB creepage. |
| INA, INB | Digital input signals (side 1) | Accept CMOS/TTL logic; drive internal transformers; support 0–90 Mbps NRZ data. |
| EN1 | Primary-side output enable | Active-low control: disables outputs OA, OB when asserted, reducing system power during sleep modes. |
| VDD2 | Secondary-side power supply | Supplies output drivers OA, OB; independently biased (2.7–5.5 V), enabling level translation. |
| GND2 | Secondary-side ground reference | Return path for VDD2; galvanically isolated from GND1; defines output logic thresholds. |
| OA, OB | Digital outputs (side 2) | CMOS-compatible buffered outputs; VOH ≥ (VDD2 − 0.4 V) at 3.2 mA sink, VOL ≤ 0.4 V at 3.2 mA source. |
| EN2 | Secondary-side output enable | Active-low control: disables OA, OB independently of EN1, supporting dual-domain power sequencing. |
Key Features
| Feature | Design Value |
|---|---|
| Automotive qualification | AEC-Q100 Grade 1 certified - validated for reliability in automotive powertrain, chassis, and ADAS modules. |
| DC-correct refresh circuitry | Patented internal refresh ensures output state retention during zero-input transitions or VDD1/VDD2 power loss - eliminates need for external watchdog timers. |
| Bidirectional channel configuration | Two input-only (INA/INB) and two output-only (OA/OB) channels - optimized for asymmetric communication paths like microcontroller-to-transceiver links. |
| Low dynamic power consumption | 0.10 mA/Mbps (input) and 0.03 mA/Mbps (output) at 3 V - reduces thermal load in dense PCB layouts and extends battery life in portable diagnostics tools. |
| High CMTI immunity | >25 kV/µs common-mode transient rejection - prevents false triggering in noisy motor control inverters and industrial SMPS feedback loops. |
Applications
| SPI Interface Isolation | RS-485 Transceiver Isolation |
|---|---|
Use Scenario: Isolating SPI bus between a 3.3 V ARM Cortex-M7 MCU and a 5 V isolated ADC or DAC in an industrial data acquisition module. IC Role / Device Role / Timing Role: ADUM1402WSRWZ-RL provides four independent isolation paths: two for MOSI/MISO clock/data and two for chip select/read-ready handshaking, preserving sub-ns timing alignment. Use Value: Eliminates ground loop noise and enables safe operation across ±1 kV common-mode voltage differences while maintaining 90 Mbps throughput for high-resolution streaming. |
Use Scenario: Galvanic isolation of RS-485 differential transceivers in factory automation networks exposed to ESD and lightning-induced surges. IC Role / Device Role / Timing Role: ADUM1402WSRWZ-RL isolates DE/RE control lines and RX/TX data paths between UART and transceiver, with EN1/EN2 enabling coordinated power-down during bus idle periods. Use Value: Prevents fault propagation between network segments and sustains reliable communication at 20 Mbps (half of max rating) under 30 kV/µs transients per IEC 61000-4-4. |
| Automotive Battery Management System | Industrial Fieldbus Node |
Use Scenario: Signal isolation between high-voltage battery cell monitor ICs (e.g., LTC6813) and low-voltage MCU in EV battery packs. IC Role / Device Role / Timing Role: ADUM1402WSRWZ-RL isolates daisy-chain clock and data lines with <2 ns skew, enabling synchronized sampling across 100+ cells without time-stamp correction. Use Value: Meets ASIL-B functional safety requirements via reinforced insulation and AEC-Q100 qualification, reducing BMS validation effort versus discrete optocoupler solutions. |
Use Scenario: Isolating PROFIBUS DP or Modbus RTU interface in programmable logic controller (PLC) backplane modules operating in electrically noisy plant environments. IC Role / Device Role / Timing Role: ADUM1402WSRWZ-RL isolates TX/RX and RTS/CTS control signals between UART and RS-485 transceiver, with output enable supporting half-duplex bus arbitration. Use Value: Enables 12 Mbps fieldbus operation with guaranteed pulse fidelity and immunity to 25 kV/µs transients from nearby VFDs, extending node uptime in continuous process control. |
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 |
|---|---|---|---|
| SI8642ED-IS | Capacitive isolation; 100 Mbps max data rate; 2.5 kV rms isolation; no AEC-Q100 qualification. | Targeted at commercial/industrial systems only; lacks automotive safety certification and 125°C operation. | Choose SI8642ED-IS only for cost-sensitive non-automotive designs where 100 Mbps margin and 105°C max ambient suffice. |
| ISO7742FQDWRQ1 | Capacitive isolation; 100 Mbps; AEC-Q100 Grade 1; 5000 V rms isolation; 8-pin SOIC package (fewer pins, different pinout). | Requires redesign for 4-channel unidirectional use due to 2-in/2-out fixed configuration and smaller footprint; higher VIORM but no level translation flexibility. | Select ISO7742FQDWRQ1 only when board space is constrained and full 5 kV rms reinforcement is mandatory - verify pin compatibility and level-shifting needs before substitution. |
Compared with SI8642ED-IS and ISO7742FQDWRQ1, ADUM1402WSRWZ-RL uniquely combines AEC-Q100 Grade 1 qualification, 125°C operation, 3 V/5 V bidirectional level translation, and SOIC-16 mechanical compatibility - making it the only drop-in solution for automotive SPI isolation requiring reinforced insulation and thermal robustness without layout changes.
Availability
ADUM1402WSRWZ-RL is available at Aetrix Electronics and suitable for automotive battery management, industrial fieldbus nodes, and high-reliability SPI isolation requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for ADUM1402WSRWZ-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, Inc. 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 ADuM1402 series belongs to Analog Devices' iCoupler® digital isolator product line, engineered specifically for replacing optocouplers in safety-critical, high-noise, and thermally demanding applications where reliability, timing precision, and regulatory compliance are non-negotiable.
FAQ
What is the maximum data rate supported by ADUM1402WSRWZ-RL?
ADUM1402WSRWZ-RL supports a maximum data rate of 90 Mbps in NRZ format, verified under 125°C operation with <2 ns pulse width distortion. This rating applies to all four channels simultaneously when powered within 2.7 V–5.5 V on both sides and loaded with ≤15 pF. The CRW grade designation in the part number confirms this high-speed capability.
Does ADUM1402WSRWZ-RL support level translation between 3 V and 5 V domains?
Yes, ADUM1402WSRWZ-RL supports true bidirectional level translation: VDD1 may operate at 3.3 V while VDD2 runs at 5 V (or vice versa), with logic thresholds automatically adapting (VIH = 2.0 V at 5 V side, 1.6 V at 3 V side). This eliminates external level shifters in mixed-voltage MCU-to-peripheral interfaces.
Is ADUM1402WSRWZ-RL qualified for automotive applications?
Yes, ADUM1402WSRWZ-RL is explicitly qualified to AEC-Q100 Grade 1 (−40°C to +125°C) and carries automotive-specific certifications including UL 1577 (2500 V rms), DIN EN IEC 60747-17 (VIORM = 560 V peak), and IEC/CSA 60601-1 - making it suitable for powertrain, chassis, and ADAS systems.
How does the refresh feature in ADUM1402WSRWZ-RL ensure DC correctness?
ADUM1402WSRWZ-RL incorporates a patented internal refresh circuit that periodically samples and retransmits the last valid input state across the isolation barrier - even when input signals are static or one supply (VDD1 or VDD2) is unpowered. This guarantees output stability without external supervision or watchdog circuitry.
What is the common-mode transient immunity (CMTI) performance of ADUM1402WSRWZ-RL?
ADUM1402WSRWZ-RL delivers >25 kV/µs common-mode transient immunity at both logic high and low output states, tested per IEC 61000-4-4 with 800 V transient magnitude. This performance is maintained across its full operating temperature range and enables reliable operation in motor drives and switch-mode power supplies.
Can ADUM1402WSRWZ-RL be used in a 4-channel bidirectional configuration?
No - ADUM1402WSRWZ-RL has a fixed 2-input/2-output unidirectional channel configuration (INA/INB on VDD1 side, OA/OB on VDD2 side). For true bidirectional channels, engineers must select ADUM1401WSRWZ-RL (2-channel bidirectional + 2-channel unidirectional) or ADUM1400WSRWZ-RL (4-channel unidirectional with all inputs on one side).
ADUM1402WSRWZ-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:
- 2/2
- 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
ADUM1402WSRWZ-RL FAQ
1.How can I place an order for ADUM1402WSRWZ-RL through Aetrix?
Please submit a Request for Quotation (RFQ) for ADUM1402WSRWZ-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 ADUM1402WSRWZ-RL reliable?
The price and inventory of ADUM1402WSRWZ-RL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADUM1402WSRWZ-RL is usually 5 days.
3.What payment methods are accepted for ADUM1402WSRWZ-RL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADUM1402WSRWZ-RL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADUM1402WSRWZ-RL?
ADUM1402WSRWZ-RL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADUM1402WSRWZ-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 ADUM1402WSRWZ-RL?
For technical support, including ADUM1402WSRWZ-RL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADUM1402WSRWZ-RL requirements.
6.How does Aetrix verify that ADUM1402WSRWZ-RL is sourced from the original manufacturer or authorized distributors?
All ADUM1402WSRWZ-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 ADUM1402WSRWZ-RL meets industry standards.
7.What is the process for return or replacement of ADUM1402WSRWZ-RL?
All ADUM1402WSRWZ-RL units undergo pre-shipment inspection (PSI). If there is an issue with ADUM1402WSRWZ-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 ADUM1402WSRWZ-RL part is unused and in its original packaging.
Return procedure for ADUM1402WSRWZ-RL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ADUM1402WSRWZ-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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