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Analog Devices Inc. ADUM3402BRWZ-RL
- Part No.:
- ADUM3402BRWZ-RL
- Manufacturer:
- Analog Devices Inc.
- Category:
- Digital Isolators
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
ADUM3402BRWZ-RL.pdf
- Description:
- DGTL ISO 2500VRMS 4CH GP 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:6,323
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Product details
Overview
ADUM3402BRWZ-RL from Analog Devices is a quad-channel digital isolator using iCoupler® transformer-based isolation technology, providing bidirectional signal transmission across an isolation barrier with 2500 Vrms reinforced insulation. It supports 3.3 V/5 V level translation, operates up to 90 Mbps (CRW grade), delivers ≤2 ns pulse width distortion and ≤6 ns output enable/disable propagation delay, and is used in industrial fieldbus interfaces requiring high common-mode transient immunity (>25 kV/µs).
For engineers reviewing the ADUM3402BRWZ-RL datasheet, ADUM3402BRWZ-RL pinout, ADUM3402BRWZ-RL application, or ADUM3402BRWZ-RL equivalent, this page provides verified specifications, SOIC-16W package details, channel configuration (2/2 bidirectional), ESD-enhanced system-level reliability per IEC 61000-4-x, and real-world design guidance for SPI isolation, RS-485 transceiver protection, and isolated power supply monitoring.
Technical Context
The ADUM3402BRWZ-RL implements two input channels on Side A and two on Side B, enabling full-duplex communication across the isolation barrier. Its iCoupler® architecture replaces optocouplers with monolithic air-core transformers, eliminating current transfer ratio drift and lifetime degradation while supporting dc-correct logic states via patented refresh circuitry.
It operates over 3.0–5.5 V on both sides, allowing mixed-voltage operation (e.g., 3.3 V MCU side / 5 V bus side), and integrates output enable functionality for bus contention control. The BRW suffix denotes the 10 Mbps data rate grade with 32 ns max propagation delay and 3 ns pulse width distortion at 3.3 V operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Isolation Rating | 2500 Vrms for 1 minute (UL 1577); VIORM = 560 Vpeak (DIN EN IEC 60747-17) |
| Max Data Rate | 10 Mbps - guaranteed timing integrity (≤3 ns PWD) for RS-485/RS-422 control lines |
| Propagation Delay | 20–50 ns - enables tight timing budgets in isolated SPI clock/data paths |
| Supply Range | 3.0–5.5 V per side - supports voltage translation between 3.3 V microcontrollers and 5 V peripherals |
| Quiescent Current | 2.0–2.8 mA total (3.3 V) or 2.0–2.8 mA total (5 V) - enables low-power isolated sensor interfaces |
| Common-Mode Transient Immunity | >25 kV/µs - maintains signal integrity in noisy motor drive or PLC backplane environments |
| Operating Temperature | −40°C to +105°C - qualified for industrial automation and factory control systems |
Pinout & Package
ADUM3402BRWZ-RL is housed in a 16-lead SOIC wide-body (SOIC_W) RoHS-compliant package with 7.5 mm creepage/clearance, optimized for reinforced insulation in industrial applications.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD1 | Primary-side power supply | Supplies Side A (pins 1–8); accepts 3.0–5.5 V for level translation flexibility |
| GND1 | Primary-side ground reference | Reference for Side A inputs/outputs; must be separated from GND2 by isolation barrier |
| INA, INB | Input signals to Side A | Accept CMOS logic levels; drive isolated outputs on Side B (OUTA, OUTB) |
| EN1 | Output enable for Side A outputs | Active-low control: pulls OUTA/OUTB high-impedance when asserted |
| VDD2 | Secondary-side power supply | Supplies Side B (pins 9–16); independent of VDD1 for galvanic isolation |
| GND2 | Secondary-side ground reference | Reference for Side B inputs/outputs; electrically isolated from GND1 |
| INC, IND | Input signals to Side B | Accept CMOS logic levels; drive isolated outputs on Side A (OUTC, OUTD) |
| EN2 | Output enable for Side B outputs | Active-low control: pulls OUTC/OUTD high-impedance when asserted |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional 2/2 channel configuration | Enables full-duplex isolated communication without external direction control logic |
| Enhanced system-level ESD reliability | Validated per IEC 61000-4-2/4-4/4-5 - reduces board-level protection component count |
| Output enable function per side | Allows dynamic bus arbitration and power-down of isolated outputs without disrupting isolation barrier |
| DC-correct refresh architecture | Maintains valid logic state during idle periods or power-up sequences - no external watchdog required |
| High CMTI (>25 kV/µs) | Prevents data corruption in high-noise environments such as variable frequency drives and switch-mode power supplies |
Applications
| SPI Isolation Interface | RS-485 Transceiver Protection |
|---|---|
Use Scenario: Isolating SPI bus between a 3.3 V ARM Cortex-M microcontroller and a high-voltage isolated ADC or DAC in a programmable logic controller. IC Role / Device Role / Timing Role: ADUM3402BRWZ-RL provides galvanic separation for SCLK, MOSI, MISO, and CS lines while preserving sub-50 ns propagation matching for synchronous sampling. Use Value: Eliminates ground loop noise and prevents latch-up during fault conditions, enabling reliable 1 MSPS data acquisition in 24 V industrial I/O modules. | Use Scenario: Protecting UART-to-RS-485 transceiver control lines (DE/RE) and data lines in a distributed I/O node exposed to 2 kV surge transients. IC Role / Device Role / Timing Role: ADUM3402BRWZ-RL isolates directional control and differential data paths with matched channel delays to prevent bus contention timing violations. Use Value: Maintains RS-485 half-duplex timing integrity under fast common-mode transients (>25 kV/µs), reducing need for TVS diodes on control side. |
| Industrial Fieldbus Node | Isolated Power Supply Monitor |
Use Scenario: Signal isolation in Profibus DP slave nodes where 5 V logic communicates with 24 V field wiring through isolated RS-485 PHYs. IC Role / Device Role / Timing Role: ADUM3402BRWZ-RL bridges 3.3 V FPGA control logic to 5 V RS-485 driver enable and status feedback lines with level translation. Use Value: Enables mixed-voltage interoperability and meets IEC 61000-4-4 burst immunity requirements without layout-dependent external components. | Use Scenario: Monitoring isolated DC-DC converter output voltage and fault signals (OV/UV/OC) in medical power supplies requiring 2×MOPP safety compliance. IC Role / Device Role / Timing Role: ADUM3402BRWZ-RL transmits analog monitor signals digitized by isolated sigma-delta ADCs and relays fault flags to primary-side controller. Use Value: Provides reinforced insulation (2500 Vrms) and certified safety approvals (IEC 62368-1, IEC 60601-1) for patient-connected equipment. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital isolator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADUM3402ARWZ-RL | ARW grade: 1 Mbps max data rate, 1000 ns min pulse width, higher PWD (40 ns) | Suitable only for low-speed control signaling (e.g., enable/status lines), not data buses | Select ADUM3402ARWZ-RL only when cost sensitivity outweighs speed requirement and timing precision |
| SI8642ED-B-IS | Capacitive isolation; 100 Mbps capability; different pinout (SOIC-16N); no integrated output enable | Requires external logic for bus arbitration; lacks EN1/EN2 pins for side-specific tri-state control | Choose SI8642ED-B-IS if higher bandwidth or lower quiescent current is critical and EN functionality can be implemented externally |
Compared with ADUM3402ARWZ-RL and SI8642ED-B-IS, the ADUM3402BRWZ-RL uniquely balances 10 Mbps throughput, integrated output enable per side, and IEC 61000-4-x enhanced ESD robustness - making it optimal for industrial RS-485 and SPI isolation where timing predictability and system-level reliability are co-prioritized.
Availability
ADUM3402BRWZ-RL is available at Aetrix Electronics and suitable for industrial fieldbus nodes, isolated SPI interfaces, RS-485 transceiver protection, and medical power supply monitors requiring stable component supply and long-term lifecycle support.
Supply support for ADUM3402BRWZ-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 industrial, automotive, communications, and healthcare markets.
The ADuM340x family was designed specifically for cost-sensitive industrial isolation applications demanding enhanced system-level ESD reliability, mixed-voltage operation, and precise timing - extending iCoupler® technology into mainstream programmable logic controllers and distributed I/O systems.
FAQ
What is the maximum guaranteed data rate for ADUM3402BRWZ-RL?
The ADUM3402BRWZ-RL is rated for a maximum data rate of 10 Mbps with guaranteed pulse width distortion ≤3 ns and propagation delay ≤50 ns. This specification applies under recommended operating conditions (3.0–5.5 V supplies, TA = −40°C to +105°C, CL = 15 pF). Higher rates up to 120 Mbps are possible in CRW-grade variants, but ADUM3402BRWZ-RL is specifically characterized and warranted for 10 Mbps operation.
Does ADUM3402BRWZ-RL support level translation between 3.3 V and 5 V domains?
Yes, ADUM3402BRWZ-RL supports true bidirectional level translation: VDD1 and VDD2 may each operate independently from 3.0 V to 5.5 V. For example, Side A (VDD1 = 3.3 V) can interface with a low-voltage MCU while Side B (VDD2 = 5 V) drives legacy 5 V peripherals - with logic thresholds automatically adapting (VIH = 1.6 V at 3.3 V, 2.0 V at 5 V).
What safety certifications does ADUM3402BRWZ-RL hold?
ADUM3402BRWZ-RL is certified to UL 1577 (2500 Vrms/1 min), DIN EN IEC 60747-17 (VDE 0884-17, VIORM = 560 Vpeak), IEC/CSA 62368-1, IEC/CSA 60601-1, IEC/CSA 61010-1, and CQC GB 4943.1. These approvals validate its suitability for reinforced insulation in industrial, medical, and test equipment applications requiring dual protection means.
How does the output enable function work on ADUM3402BRWZ-RL?
ADUM3402BRWZ-RL features two independent active-low output enable pins: EN1 controls Side A outputs (OUTC, OUTD), and EN2 controls Side B outputs (OUTA, OUTB). When asserted, each pin places its respective outputs in high-impedance state without affecting internal isolation or refresh operation - enabling dynamic bus sharing and low-power standby modes in multi-node systems.
Is ADUM3402BRWZ-RL pin-compatible with other ADuM340x variants?
Yes, all ADuM340x devices in the SOIC-16W (BRWZ/ARWZ/CRWZ) package share identical pinouts and footprint. The ADUM3402BRWZ-RL is functionally compatible with ADUM3402ARWZ-RL and ADUM3402CRWZ-RL at the board level; only timing performance (data rate, PWD, propagation delay) and supply current differ - allowing drop-in upgrades or downgrades based on system speed requirements.
ADUM3402BRWZ-RL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- iCoupler®
- 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:
- 10Mbps
- Propagation Delay tpLH / tpHL (Max):
- 50ns, 50ns
- Pulse Width Distortion (Max):
- 3ns
- Rise / Fall Time (Typ):
- 2.5ns, 2.5ns
- Voltage - Supply:
- 3V ~ 5.5V
- Grade:
- -
- Qualification:
- -
- Operating Temperature:
- -40°C ~ 105°C
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SOIC
ADUM3402BRWZ-RL FAQ
1.How can I place an order for ADUM3402BRWZ-RL through Aetrix?
Please submit a Request for Quotation (RFQ) for ADUM3402BRWZ-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 ADUM3402BRWZ-RL reliable?
The price and inventory of ADUM3402BRWZ-RL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADUM3402BRWZ-RL is usually 5 days.
3.What payment methods are accepted for ADUM3402BRWZ-RL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADUM3402BRWZ-RL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADUM3402BRWZ-RL?
ADUM3402BRWZ-RL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADUM3402BRWZ-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 ADUM3402BRWZ-RL?
For technical support, including ADUM3402BRWZ-RL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADUM3402BRWZ-RL requirements.
6.How does Aetrix verify that ADUM3402BRWZ-RL is sourced from the original manufacturer or authorized distributors?
All ADUM3402BRWZ-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 ADUM3402BRWZ-RL meets industry standards.
7.What is the process for return or replacement of ADUM3402BRWZ-RL?
All ADUM3402BRWZ-RL units undergo pre-shipment inspection (PSI). If there is an issue with ADUM3402BRWZ-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 ADUM3402BRWZ-RL part is unused and in its original packaging.
Return procedure for ADUM3402BRWZ-RL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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