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Analog Devices Inc. ADUM3402WBRWZ
- Part No.:
- ADUM3402WBRWZ
- Manufacturer:
- Analog Devices Inc.
- Category:
- Digital Isolators
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
ADUM3402WBRWZ.pdf
- Description:
- DGTL ISO 2500VRMS 4CH GP 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:128
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Product details
Overview
ADUM3402WBRWZ from Analog Devices is a quad-channel, bidirectional digital isolator based on iCoupler® transformer technology, providing reinforced 2500 Vrms isolation, 10 Mbps data rate, and 3.135–5.5 V dual-supply operation with level translation between 3.3 V and 5 V domains. It features output enable (VE2), precise timing (≤3.5 ns pulse width distortion), and operates up to +125°C in automotive and industrial motor drive systems.
For engineers reviewing the ADUM3402WBRWZ datasheet, ADUM3402WBRWZ pinout, ADUM3402WBRWZ application, or ADUM3402WBRWZ equivalent, this page delivers verified specifications, functional pin mapping, real-world use cases in high-noise environments, and validated alternative options for system-level ESD robustness and voltage-level translation.
Technical Context
The ADUM3402WBRWZ implements four independent galvanic isolation channels using monolithic air-core transformers, enabling true bidirectional signal transfer without external drivers. Its architecture supports mixed-voltage operation (e.g., 5 V side 1 / 3.3 V side 2) and includes a patented refresh circuit ensuring DC correctness during power-up, power-down, or static input conditions.
It delivers enhanced system-level ESD reliability per IEC 61000-4-x standards, with >25 kV/µs common-mode transient immunity and safety certifications including UL 1577 (2500 Vrms), CSA #5A, and VDE V 0884-10 (VIORM = 560 Vpeak, reinforced insulation).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Data Rate | DC to 10 Mbps (NRZ); supports high-speed CAN, SPI, and UART isolation without bandwidth bottlenecks. |
| Isolation Rating | 2500 Vrms for 1 minute (UL 1577); enables safe interface between high-voltage motor drives and low-voltage MCU domains. |
| Supply Range | 3.135 V to 5.5 V per side; allows direct integration with 3.3 V microcontrollers and 5 V sensor/actuator subsystems. |
| Pulse Width Distortion | ≤3.5 ns max; ensures minimal duty-cycle degradation in PWM feedback loops for precision motor control. |
| Common-Mode Transient Immunity | >25 kV/µs; maintains signal integrity in noisy battery monitor or inverter gate driver environments. |
| Propagation Delay Skew | ≤3.5 ns codirectional; guarantees synchronized sampling across multiple isolated ADC or encoder channels. |
| Output Enable Function | VE2 pin controls all four outputs (VOA–VOD); enables bus arbitration and power-saving tri-state mode in multi-node systems. |
Pinout & Package
ADUM3402WBRWZ uses a 16-lead SOIC wide-body (RWZ), RoHS-compliant package with creepage/clearance ≥8.1 mm and reinforced insulation. Side 1 (pins 1–8) and Side 2 (pins 9–16) are fully galvanically isolated; GND1 (pins 2 & 8) and GND2 (pins 9 & 15) must be separately routed.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD1 (Pin 1) | Side 1 supply input | Accepts 3.135–5.5 V; powers input-side logic and transformers; decoupling capacitor required. |
| GND1 (Pins 2, 8) | Side 1 ground reference | Internally connected; both pins must connect to same low-impedance ground plane for EMI control. |
| VIA–VID (Pins 3–6) | Input channels A–D | CMOS-compatible inputs; VIH = 2.0 V (5 V) or 1.6 V (3.3 V); support direct MCU GPIO connection. |
| VE2 (Pin 10) | Output enable (side 2) | Active-high control for VOA–VOD; low = high-impedance; critical for bus sharing in multi-isolator configurations. |
| VOA–VOD (Pins 11–14) | Output channels A–D | CMOS outputs; VOH/VOL specified at ±4 mA load; support direct interface to 3.3 V or 5 V receivers. |
| VDD2 (Pin 16) | Side 2 supply input | Independent 3.135–5.5 V rail; enables level translation and fault-domain separation from side 1. |
Key Features
| Feature | Design Value |
|---|---|
| iCoupler® transformer isolation | Eliminates LED aging and CTR drift of optocouplers; provides stable timing and 50-year insulation lifetime. |
| Enhanced ESD architecture | Validated system-level robustness per IEC 61000-4-2/4-4/4-5; reduces board-level protection component count. |
| DC-correct refresh circuit | Maintains output state during prolonged static inputs or brown-out; prevents undetected data loss in safety-critical monitoring. |
| Wide temperature range | −40°C to +125°C operation; qualified for under-hood automotive and industrial motor drive applications. |
| Mixed-voltage level translation | Seamlessly interfaces 3.3 V MCU logic with 5 V analog front-ends or gate drivers without external level shifters. |
Applications
| Motor Drive Control | Battery Management System |
|---|---|
Use Scenario: Isolating PWM signals and fault feedback between MCU and IGBT/SiC gate drivers in EV traction inverters. IC Role / Device Role / Timing Role: Quad-channel isolator providing independent, low-skew, high-CMTI signal paths for gate drive enable, PWM inputs, and DESAT feedback. Use Value: Prevents ground loop noise from corrupting PWM edges; enables reliable 10 Mbps DESAT response within <100 ns propagation delay budget. | Use Scenario: Isolating cell voltage measurement and balancing control signals between battery pack and BMS controller in hybrid electric vehicles. IC Role / Device Role / Timing Role: Bidirectional isolator translating 3.3 V MCU I²C/SPI to 5 V analog monitoring ICs while maintaining galvanic separation across 400 V battery stacks. Use Value: Enables accurate, ESD-hardened communication across high dv/dt domains without signal distortion or latch-up risk. |
| Industrial PLC I/O Module | Renewable Energy Inverter |
Use Scenario: Isolating digital inputs (limit switches, sensors) and outputs (relay drivers, indicator LEDs) in DIN-rail mounted programmable logic controllers. IC Role / Device Role / Timing Role: Four-channel isolator handling discrete I/O with configurable output enable (VE2) for hot-swap-safe module insertion. Use Value: Reduces bill-of-materials by replacing four discrete optocouplers; supports 125°C ambient operation in enclosed cabinets. | Use Scenario: Isolating MPPT controller communication and DC-link voltage sensing in solar string inverters exposed to lightning-induced surges. IC Role / Device Role / Timing Role: Reinforced isolator providing 560 Vpeak working voltage and >25 kV/µs CMTI for grid-tie interface and fault reporting. Use Value: Meets VDE 0126-1-1 requirements for PV system safety; eliminates need for external surge suppressors on isolated comms lines. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital isolator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SI8642ED-B-IS | Capacitive isolation; 5000 Vrms rating; higher 150 Mbps max data rate; no integrated refresh circuit. | Preferred for ultra-high-speed serial links (e.g., USB isolation), but requires external watchdog for DC correctness in static conditions. | Select when speed >10 Mbps is mandatory and system design accommodates external DC-failure mitigation. |
| ISO6742QDWR | Capacitive isolation; 5000 Vrms; 50 Mbps; AEC-Q100 Grade 1; no output enable pin. | Suitable for automotive infotainment, but lacks VE2 control needed for bus arbitration in motor control subsystems. | Choose for cost-sensitive automotive non-safety domains where tri-state capability is unnecessary. |
Compared with SI8642ED-B-IS and ISO6742QDWR, the ADUM3402WBRWZ offers guaranteed DC correctness without external components, integrated output enable for multi-node bus control, and proven system-level ESD resilience-making it optimal for safety-critical motor drive and battery monitoring where reliability outweighs raw speed.
Availability
ADUM3402WBRWZ is available at Aetrix Electronics and suitable for hybrid electric vehicle battery monitors, industrial motor drives, PLC I/O modules, and renewable energy inverters requiring stable component supply, long-term lifecycle assurance, and certified reinforced isolation.
Supply support for ADUM3402WBRWZ 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 ADuM340xW series belongs to Analog Devices' iCoupler® digital isolator product line, designed specifically for automotive-grade, high-reliability isolation in electric propulsion, battery management, and industrial automation systems.
FAQ
What is the maximum data rate supported by the ADUM3402WBRWZ?
The ADUM3402WBRWZ supports a maximum data rate of 10 Mbps in NRZ format, verified across all operating conditions (−40°C to +125°C, 3.135–5.5 V supplies). This is confirmed in Tables 1, 4, 7, and 10 of the Rev. B datasheet, with pulse width distortion limited to ≤3.5 ns to maintain signal integrity at full rate. The ADUM3402WBRWZ does not support overspeed operation beyond 10 Mbps.
Does the ADUM3402WBRWZ support level translation between 3.3 V and 5 V domains?
Yes, the ADUM3402WBRWZ supports bidirectional level translation: VDD1 and VDD2 can operate independently at 3.135–5.5 V, enabling 3.3 V ↔ 5 V signal conversion across the isolation barrier. Tables 9 and 12 specify distinct VIH/VIL thresholds for each supply voltage, and the functional block diagram (Figure 3) confirms separate input/output logic families. This eliminates external level shifters in mixed-voltage systems.
What is the purpose of the VE2 pin on the ADUM3402WBRWZ?
The VE2 pin (Pin 10) is the active-high output enable for all four side-2 outputs (VOA–VOD). When VE2 is high or floating, outputs drive normally; when low, they enter high-impedance state. As stated in Table 21 and the Truth Table (Table 20), this enables bus sharing, hot-swap safety, and power sequencing control-critical in multi-isolator PLC backplanes or modular battery packs where output contention must be avoided.
Is the ADUM3402WBRWZ qualified for automotive applications?
Yes, the ADUM3402WBRWZ is explicitly qualified for automotive applications per the "Automotive Products" section (Page 18) and meets AEC-Q100 stress test requirements. It carries VDE V 0884-10 reinforced insulation (VIORM = 560 Vpeak) and UL 1577 certification, supporting under-hood deployment in hybrid electric vehicles. Its −40°C to +125°C operating range and enhanced ESD architecture align with ISO 16750-2 and IEC 61000-4-x automotive EMC standards.
How does the ADUM3402WBRWZ ensure DC correctness during static input conditions?
The ADUM3402WBRWZ incorporates a patented internal refresh circuit that periodically samples and retransmits the last valid input state-even when inputs remain static or during power-up/power-down transitions. This is documented in the General Description (Page 1) and Truth Table (Table 20), which states outputs return to the input state within 1 µs after VDDI restoration. Unlike optocouplers or basic capacitive isolators, no external watchdog or refresh logic is required.
ADUM3402WBRWZ 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:
- 2/2
- Channel Type:
- Unidirectional
- Voltage - Isolation:
- 2500Vrms
- Common Mode Transient Immunity (Min):
- 25kV/µs
- Data Rate:
- 10Mbps
- Propagation Delay tpLH / tpHL (Max):
- 36ns, 36ns
- Pulse Width Distortion (Max):
- 3.5ns
- Rise / Fall Time (Typ):
- 2.5ns, 2.5ns
- Voltage - Supply:
- 3V ~ 5.5V
- Grade:
- Automotive
- Qualification:
- -
- Operating Temperature:
- -40°C ~ 125°C
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SOIC
ADUM3402WBRWZ FAQ
1.How can I place an order for ADUM3402WBRWZ through Aetrix?
Please submit a Request for Quotation (RFQ) for ADUM3402WBRWZ 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 ADUM3402WBRWZ reliable?
The price and inventory of ADUM3402WBRWZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADUM3402WBRWZ is usually 5 days.
3.What payment methods are accepted for ADUM3402WBRWZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADUM3402WBRWZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADUM3402WBRWZ?
ADUM3402WBRWZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADUM3402WBRWZ 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 ADUM3402WBRWZ?
For technical support, including ADUM3402WBRWZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADUM3402WBRWZ requirements.
6.How does Aetrix verify that ADUM3402WBRWZ is sourced from the original manufacturer or authorized distributors?
All ADUM3402WBRWZ 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 ADUM3402WBRWZ meets industry standards.
7.What is the process for return or replacement of ADUM3402WBRWZ?
All ADUM3402WBRWZ units undergo pre-shipment inspection (PSI). If there is an issue with ADUM3402WBRWZ, 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 ADUM3402WBRWZ part is unused and in its original packaging.
Return procedure for ADUM3402WBRWZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ADUM3402WBRWZ Tags
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ISO1212DBQR
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ISO6721BDR
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SI8710AC-B-ISR
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ISO7720FDR
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ISO7721DR
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ISO7721FDR
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SI8710CC-B-ISR
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ISO6741FQDWRQ1
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ISO7721DWVR
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ISO7762FDBQR
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ISO7741DWR
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ISO7741FDWR
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