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Analog Devices Inc. ADUM3402TRWZ-EP
- Part No.:
- ADUM3402TRWZ-EP
- Manufacturer:
- Analog Devices Inc.
- Category:
- Digital Isolators
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
ADUM3402TRWZ-EP.pdf
- Description:
- DGTL ISO 2500VRMS 4CH GP 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,320
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Product details
Overview
ADUM3402TRWZ-EP from Analog Devices is a quad-channel, reinforced digital isolator using iCoupler® transformer-based isolation technology. It provides 2500 Vrms isolation, operates across 3.135–5.5 V supplies on both sides, supports up to 10 Mbps data rate, and delivers >25 kV/µs common-mode transient immunity. It is deployed in RS-485 transceiver interfaces within harsh industrial motor control systems.
For engineers reviewing the ADUM3402TRWZ-EP datasheet, ADUM3402TRWZ-EP pinout, ADUM3402TRWZ-EP application, or ADUM3402TRWZ-EP equivalent, this page delivers verified channel configuration (2 forward + 2 reverse), military-grade temperature range (−55°C to +125°C), ESD-enhanced system-level robustness per IEC 61000-4-x, and precise supply current values at 3.3 V/5 V mixed operation.
Technical Context
The ADUM3402TRWZ-EP implements two input-to-output (forward) channels and two output-to-input (reverse) channels, as confirmed by Figure 3 functional block diagram and pin labeling (VIA/VIB inputs → VOA/VOB outputs; VOC/VOD inputs ← VIC/VID outputs). Its air-core transformer isolation architecture enables galvanic separation without LED degradation or timing drift.
It integrates a patented refresh circuit ensuring DC correctness during signal inactivity and power sequencing, and features layout-level enhancements for improved system-level ESD/burst/surge resilience beyond standard iCoupler devices - validated under DIN V VDE V 0884-10:2006-12 with VIORM = 560 Vpeak and reinforced insulation classification.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Isolation Rating | 2500 Vrms for 1 minute (UL 1577); reinforced insulation per VDE V 0884-10 |
| Max Data Rate | 10 Mbps - supports high-speed SPI clocking and RS-485 full-duplex signaling |
| Supply Range | 3.135 V to 5.5 V on both sides - enables bidirectional level translation (e.g., 3.3 V MCU ↔ 5 V bus) |
| Propagation Delay | 20–50 ns - ensures tight timing alignment in real-time control loops |
| Common-Mode Transient Immunity | >25 kV/µs - maintains signal integrity in noisy motor drive or power converter environments |
| Operating Temperature | −55°C to +125°C - qualified for defense/aerospace and extended industrial use |
| Quiescent Current (3.3 V) | 1.2–1.7 mA per side at DC–2 Mbps - enables low-power isolated sensor interfaces |
Pinout & Package
ADUM3402TRWZ-EP uses a 16-lead SOIC wide-body package (RW-16) with creepage/clearance ≥7.8 mm and reinforced insulation barrier separating side 1 (pins 1–8) and side 2 (pins 9–16).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD1, GND1 | Side 1 power supply | Input-side logic domain supply (3.135–5.5 V); GND1 is reference for VIA, VIB, VE1 |
| VIA, VIB | Forward input channels | Digital inputs driving isolated outputs VOA, VOB respectively |
| VIC, VOD | Reverse input channels | Digital inputs driving isolated outputs VOC, VOD respectively |
| VE1 | Side 1 enable | Active-low tristate control for all side 1 outputs (VOA–VOD) |
| VDD2, GND2 | Side 2 power supply | Output-side logic domain supply (3.135–5.5 V); GND2 is reference for VOA–VOD, VE2 |
| VOA, VOB | Forward output channels | Isolated outputs driven by VIA, VIB respectively |
| VOC, VOD | Reverse output channels | Isolated outputs driven by VIC, VOD respectively |
| VE2 | Side 2 enable | Active-low tristate control for all side 2 outputs (VOC, VOD) |
Key Features
| Feature | Design Value |
|---|---|
| Reinforced insulation | VIORM = 560 Vpeak, certified to VDE V 0884-10 - eliminates need for external safety capacitors in IEC 61800-5-1 compliant drives |
| Enhanced ESD reliability | System-level IEC 61000-4-2/4-4/4-5 robustness via layout and process hardening - reduces field failure in unshielded factory-floor installations |
| DC-correct refresh | Patented circuit maintains output state during idle periods or power-up - prevents spurious resets in watchdog or enable lines |
| Mixed-voltage operation | Supports 3.3 V/5 V or 5 V/3.3 V cross-isolation - enables direct interfacing between low-voltage FPGAs and legacy 5 V fieldbus PHYs |
| Military temp qualification | −55°C to +125°C operation with controlled baseline manufacturing - meets AQEC requirements for aerospace avionics |
Applications
| Industrial Motor Drives | SPI Isolation for Precision ADCs |
|---|---|
Use Scenario: Isolating gate driver control signals and feedback from high-noise IGBT inverters in servo drives. IC Role / Device Role / Timing Role: ADUM3402TRWZ-EP provides two forward channels for PWM commands and two reverse channels for fault reporting and current-sense ADC readback. Use Value: >25 kV/µs CMTI prevents false triggering during fast dV/dt switching transients, maintaining safe torque control. |
Use Scenario: Galvanically isolating SPI interface between an isolated precision SAR ADC (e.g., AD7685) and host MCU in medical imaging front-ends. IC Role / Device Role / Timing Role: ADUM3402TRWZ-EP carries SCLK, MOSI, MISO, and CS across isolation barrier with matched propagation delay (tPSKCD ≤ 3 ns). Use Value: Sub-50 ns propagation delay and <3 ns pulse width distortion preserve SPI timing margins at 10 Mbps, enabling 1 MSPS sampling without clock skew errors. |
| RS-485 Transceiver Isolation | Aerospace Data Acquisition Modules |
Use Scenario: Isolating half-duplex RS-485 transceivers (e.g., ADM3485) in distributed control networks for oil & gas SCADA systems. IC Role / Device Role / Timing Role: ADUM3402TRWZ-EP separates DE/RE control (forward) from RO data (reverse), enabling clean direction switching. Use Value: Dual-supply flexibility allows 3.3 V MCU to control 5 V RS-485 bus while maintaining 2500 Vrms working voltage compliance. |
Use Scenario: Signal conditioning and isolation in radiation-tolerant flight data recorders requiring long-term reliability at extreme temperatures. IC Role / Device Role / Timing Role: ADUM3402TRWZ-EP isolates sensor excitation, analog mux control, and status flags in multi-channel telemetry units. Use Value: −55°C to +125°C rating and enhanced product change notification ensure consistent performance across mission life without requalification. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital isolator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADUM3402BRWZ | Commercial-grade version; same pinout, 10 Mbps, but rated only for −40°C to +105°C and lacks AQEC/military baseline controls | Not suitable for aerospace or extended-temperature industrial deployments where −55°C startup or lifecycle traceability is required | Select ADUM3402BRWZ only for cost-sensitive commercial designs with standard temp range and no enhanced reliability mandates |
| SI8642ED-B-IS | Capacitive isolation; 5000 Vrms rating, 150 kV/µs CMTI, but VIORM = 400 Vpeak (basic insulation), no VDE V 0884-10 certification | Lacks reinforced insulation certification needed for functional safety architectures (e.g., IEC 61508 SIL-2) in motor drives | Choose SI8642ED-B-IS only when ultra-high CMTI dominates over safety certification and temperature range requirements |
Compared with ADUM3402BRWZ and SI8642ED-B-IS, the ADUM3402TRWZ-EP uniquely combines military temperature range, VDE-reinforced certification, and system-level ESD hardening - making it the sole option for DO-160G Section 22 Level 3 surge/ESD compliance in airborne systems.
Availability
ADUM3402TRWZ-EP is available at Aetrix Electronics and suitable for industrial motor drives, aerospace data acquisition modules, isolated SPI interfaces, and RS-485 fieldbus systems requiring stable component supply across extended temperature and regulatory-compliant lifecycles.
Supply support for ADUM3402TRWZ-EP 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, headquartered in Norwood, MA.
The ADuM3400-EP family was designed specifically for defense, aerospace, and high-reliability industrial applications demanding extended temperature operation, enhanced ESD robustness, and certified reinforced isolation - fulfilling AQEC and VDE V 0884-10 requirements out-of-the-box.
FAQ
What is the channel direction configuration of ADUM3402TRWZ-EP?
The ADUM3402TRWZ-EP has two forward channels (VIA→VOA, VIB→VOB) and two reverse channels (VIC←VOC, VOD←VOD), as defined in Figure 3 of the datasheet. This asymmetric configuration enables bidirectional communication across the isolation barrier without external logic, supporting protocols like RS-485 DE/RE control and data return. Each channel operates independently at up to 10 Mbps.
Does ADUM3402TRWZ-EP support mixed 3.3 V and 5 V operation?
Yes, ADUM3402TRWZ-EP supports mixed-supply operation: VDD1 can be 3.135–3.6 V while VDD2 is 4.5–5.5 V (or vice versa). Table 3 confirms quiescent currents of 1.2–1.7 mA per side at DC–2 Mbps under 3.3 V/5 V conditions. This enables direct interfacing between 3.3 V microcontrollers and 5 V fieldbus transceivers without level shifters.
What safety certifications does ADUM3402TRWZ-EP hold?
ADUM3402TRWZ-EP is UL recognized (2500 Vrms, 1 min), CSA approved (Notice 5A), and VDE certified to DIN V VDE V 0884-10:2006-12 for reinforced insulation with VIORM = 560 Vpeak. The "*" marking on the package denotes VDE approval. It meets basic insulation requirements per IEC 60950-1 and IEC 62020-1, enabling use in safety-critical industrial drives.
How does the refresh feature in ADUM3402TRWZ-EP work?
The ADUM3402TRWZ-EP incorporates a patented internal refresh circuit that monitors DC input states and periodically retransmits static logic levels across the isolation barrier. This ensures output stability during prolonged signal inactivity, power-up, or brownout conditions - preventing undefined states in critical enable or reset lines. Refresh rate is specified at 1.1–1.2 Mbps depending on supply configuration.
What is the maximum common-mode transient immunity (CMTI) of ADUM3402TRWZ-EP?
ADUM3402TRWZ-EP guarantees >25 kV/µs common-mode transient immunity for both logic high and low output states, tested per VDE V 0884-10 with 1000 V common-mode voltage and 800 V transient magnitude. This performance is maintained across the full −55°C to +125°C operating range and enables reliable operation in high-dV/dt environments such as IGBT-based motor inverters and switch-mode power supplies.
ADUM3402TRWZ-EP Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- iCoupler®
- 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:
- 2/2
- Channel Type:
- Unidirectional
- Voltage - Isolation:
- 2500Vrms
- Common Mode Transient Immunity (Min):
- 25kV/µs
- Data Rate:
- 10Mbps
- Propagation Delay tpLH / tpHL (Max):
- 50ns, 50ns
- Pulse Width Distortion (Max):
- 3ns
- Rise / Fall Time (Typ):
- 2.5ns, 2.5ns
- Voltage - Supply:
- 3.135V ~ 5.5V
- Grade:
- -
- Qualification:
- -
- Operating Temperature:
- -55°C ~ 125°C
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SOIC
ADUM3402TRWZ-EP FAQ
1.How can I place an order for ADUM3402TRWZ-EP through Aetrix?
Please submit a Request for Quotation (RFQ) for ADUM3402TRWZ-EP 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 ADUM3402TRWZ-EP reliable?
The price and inventory of ADUM3402TRWZ-EP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADUM3402TRWZ-EP is usually 5 days.
3.What payment methods are accepted for ADUM3402TRWZ-EP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADUM3402TRWZ-EP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADUM3402TRWZ-EP?
ADUM3402TRWZ-EP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADUM3402TRWZ-EP 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 ADUM3402TRWZ-EP?
For technical support, including ADUM3402TRWZ-EP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADUM3402TRWZ-EP requirements.
6.How does Aetrix verify that ADUM3402TRWZ-EP is sourced from the original manufacturer or authorized distributors?
All ADUM3402TRWZ-EP 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 ADUM3402TRWZ-EP meets industry standards.
7.What is the process for return or replacement of ADUM3402TRWZ-EP?
All ADUM3402TRWZ-EP units undergo pre-shipment inspection (PSI). If there is an issue with ADUM3402TRWZ-EP, 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 ADUM3402TRWZ-EP part is unused and in its original packaging.
Return procedure for ADUM3402TRWZ-EP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ADUM3402TRWZ-EP Tags
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