My Inquiry
My Account
Analog Devices Inc. ADUM3401BRWZ
- Part No.:
- ADUM3401BRWZ
- Manufacturer:
- Analog Devices Inc.
- Category:
- Digital Isolators
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
ADUM3401BRWZ.pdf
- Description:
- DGTL ISO 2500VRMS 4CH GP 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:225
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
ADUM3401BRWZ from Analog Devices is a quad-channel digital isolator using iCoupler® transformer-based technology, providing galvanic isolation between microcontroller and peripheral interfaces. It supports bidirectional communication at up to 10 Mbps, operates from 3.0 V to 5.5 V on both sides, delivers ≤3 ns pulse width distortion, and features output enable functionality for bus control in industrial I/O and PLC systems.
For engineers reviewing the ADUM3401BRWZ datasheet, ADUM3401BRWZ pinout, ADUM3401BRWZ application, or ADUM3401BRWZ equivalent, this page delivers verified timing specs, SOIC-16W package details, ESD-enhanced system-level reliability per IEC 61000-4-x, and real-world isolation use cases including SPI isolation and RS-485 transceiver protection.
Technical Context
The ADUM3401BRWZ implements four independent unidirectional channels with inputs on one side (Side A) and outputs on the other (Side B), enabling asymmetric signal flow critical for isolated SPI master-slave links. Its iCoupler® architecture replaces optocouplers with monolithic air-core transformers, eliminating CTR drift and lifetime degradation while supporting 3.3 V/5 V level translation across the barrier.
It integrates a patented refresh circuit ensuring DC correctness during idle periods and power transitions, and achieves >25 kV/μs common-mode transient immunity via differential transformer coupling and internal shielding-key for noise-prone motor drive and factory automation environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Max Data Rate | 10 Mbps - guaranteed pulse width distortion ≤3 ns, suitable for high-speed SPI clock lines and encoder feedback paths |
| Propagation Delay | 20–50 ns - low skew enables synchronous multi-channel sampling in isolated ADC interfaces |
| Pulse Width Distortion | ≤3 ns - preserves duty cycle integrity for PWM gate drivers and precision timing signals |
| Supply Voltage Range | 3.0 V to 5.5 V per side - supports mixed-voltage systems (e.g., 3.3 V MCU + 5 V sensor bus) |
| Common-Mode Immunity | >25 kV/μs - maintains signal integrity in high-noise industrial environments with fast-switching inverters |
| Operating Temperature | −40°C to +105°C - qualified for extended thermal operation in enclosed control cabinets |
| Isolation Rating | 2500 V rms (1 min), VIORM = 560 V peak - meets UL 1577 and IEC/EN 62368-1 safety requirements |
Pinout & Package
ADUM3401BRWZ is housed in a 16-lead SOIC wide-body (SOIC_W) RoHS-compliant package, 10.3 mm × 7.5 mm footprint, 2.34 mm height, with 1.27 mm pitch. Pin 1 marked by notch or dot.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD1 | Primary-side supply | Power for input-side logic and channel A/B/C/D inputs; accepts 3.0–5.5 V |
| GND1 | Primary-side ground | Reference for Side A inputs; must be separated from GND2 by isolation barrier |
| INA, INB, INC, IND | Input channels A–D | CMOS-compatible digital inputs referenced to VDD1/GND1; drive isolated outputs |
| VDD2 | Secondary-side supply | Power for output-side logic and channel A/B/C/D outputs; independent 3.0–5.5 V domain |
| GND2 | Secondary-side ground | Reference for Side B outputs; galvanically isolated from GND1 |
| OUTA, OUTB, OUTC, OUTD | Output channels A–D | CMOS outputs referenced to VDD2/GND2; drive downstream logic or transceivers |
| OE | Output enable | Active-low control: pulls all outputs to high-impedance when asserted - enables shared-bus arbitration |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional capability via channel pairing | Enables full-duplex SPI isolation using two ADUM3401BRWZ units (A/B for MOSI/MISO, C/D for SCLK/CS) |
| Enhanced ESD reliability | System-level IEC 61000-4-2/4-4/4-5 robustness validated - reduces board-level TVS dependency in fieldbus nodes |
| Low dynamic power | 4.3 mA/channel at 10 Mbps (5 V), 2.4 mA/channel (3.3 V) - extends thermal margin in dense I/O modules |
| DC-correct refresh | Maintains output state during static input or power-up without external watchdog or refresh circuitry |
| Channel-to-channel matching | ≤3 ns codirectional skew - ensures deterministic timing for parallel data capture across isolated ADCs |
Applications
| SPI Isolation | RS-485 Transceiver Isolation |
|---|---|
|
Use Scenario: Isolating SPI interface between an ARM Cortex-M4 MCU and isolated 16-bit SAR ADC in a programmable logic controller. IC Role / Device Role / Timing Role: ADUM3401BRWZ provides four independent unidirectional channels: A/B carry MOSI/MISO, C carries SCLK, D carries CS - preserving timing integrity under 10 MHz clock. Use Value: Eliminates ground loop errors and prevents latch-up during ESD events on field-side sensors, while maintaining <3 ns pulse width distortion for accurate sample alignment. |
Use Scenario: Protecting RS-485 transceiver (e.g., ADM3485) from high-voltage transients in factory floor motor control networks. IC Role / Device Role / Timing Role: ADUM3401BRWZ isolates DE/RE control lines and differential data pair (TXD/RXD) between MCU and transceiver, enabling safe hot-swap of field devices. Use Value: With >25 kV/μs CMTI, it prevents data corruption during 4 kV surge events on 24 V DC field wiring, meeting IEC 61000-4-5 Level 3 immunity requirements. |
| Industrial Fieldbus Node | Isolated Digital I/O Module |
|
Use Scenario: Building a PROFIBUS DP slave node where microcontroller UART signals require galvanic separation from bus PHY layer. IC Role / Device Role / Timing Role: ADUM3401BRWZ isolates TX, RX, RTS, and CTS lines between UART and RS-485 driver/receiver, supporting 9.6–12 Mbps baud rates with minimal jitter. Use Value: Its 10 Mbps rating and 2 ns max channel-to-channel matching ensure bit-level synchronization across control and status lines, reducing protocol timeout failures. |
Use Scenario: Implementing 8-channel isolated digital input module for monitoring 24 V DC sensor status in HVAC control panels. IC Role / Device Role / Timing Role: ADUM3401BRWZ channels A–D isolate four 24 V opto-coupler emulator inputs; OE pin enables centralized disable during firmware updates. Use Value: Low quiescent current (1.4 mA/channel @ 0–2 Mbps) minimizes self-heating in sealed enclosures, while 105°C rating supports operation near heat-generating power supplies. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital isolator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SI8641BB-B-IS | Capacitive isolation; 10 Mbps rating; 2.5 kV rms isolation; no output enable pin | Lacks OE function - requires external tri-state logic for bus sharing; lower CMTI (15 kV/μs) | Prefer ADUM3401BRWZ when OE control or >25 kV/μs CMTI is required in noisy industrial settings |
| ISO6741FRDWR | Capacitive isolation; 50 Mbps rating; 5000 V rms; 16-pin SOIC; no integrated refresh | Higher speed but lacks DC-correct refresh - may lose state during long idle periods in low-power modes | Choose ADUM3401BRWZ for guaranteed DC correctness in battery-backed or infrequently active I/O systems |
Compared with SI8641BB-B-IS and ISO6741FRDWR, ADUM3401BRWZ uniquely combines output enable, >25 kV/μs CMTI, and patented refresh in a 10 Mbps SOIC-16W package - making it optimal for deterministic, fail-safe isolation in PLC backplanes and motion controllers.
Availability
ADUM3401BRWZ is available at Aetrix Electronics and suitable for industrial PLCs, motor drives, isolated data acquisition systems, and factory automation equipment requiring stable component supply across extended product lifecycles.
Supply support for ADUM3401BRWZ 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 since 1965.
The ADuM340x family was designed specifically for cost-sensitive, high-reliability industrial isolation - emphasizing enhanced system-level ESD robustness, low power, and seamless 3.3 V/5 V level translation without external components.
FAQ
What is the maximum data rate supported by ADUM3401BRWZ?
ADUM3401BRWZ supports a maximum data rate of 10 Mbps with guaranteed pulse width distortion ≤3 ns. This rating applies under load conditions of CL = 15 pF and CMOS signal levels, and is validated across the full operating temperature range (−40°C to +105°C). The BRW grade designation explicitly confirms its 10 Mbps capability, distinguishing it from the 1 Mbps ARW and 90 Mbps CRW variants in the same family. ADUM3401BRWZ maintains timing integrity at this rate without requiring external equalization or pre-emphasis circuits.
Does ADUM3401BRWZ support level translation between 3.3 V and 5 V domains?
Yes, ADUM3401BRWZ natively supports bidirectional level translation: VDD1 can operate from 3.0 V to 5.5 V independently of VDD2, which also accepts 3.0 V to 5.5 V. When VDD1 = 5 V and VDD2 = 3.3 V, inputs referenced to 5 V logic swing correctly drive 3.3 V–compatible outputs, and vice versa. Input thresholds adapt accordingly (VIH = 2.0 V for 5 V side, 1.6 V for 3.3 V side), eliminating need for external voltage translators in mixed-supply systems such as isolated SPI interfaces between 5 V sensors and 3.3 V MCUs.
What safety certifications does ADUM3401BRWZ hold?
ADUM3401BRWZ is certified to UL 1577 (2500 V rms for 1 minute), DIN EN IEC 60747-17 (VDE 0884-17, VIORM = 560 V peak), IEC/CSA 62368-1, IEC/CSA 60601-1, and IEC/CSA 61010-1. These approvals validate its suitability for reinforced insulation in medical, industrial, and measurement equipment. The 2500 V rms withstand voltage and 560 V peak working voltage are measured per standardized test protocols and apply to the full 16-pin SOIC_W package - no derating is required for standard PCB layout with recommended creepage/clearance.
How does the output enable (OE) pin function on ADUM3401BRWZ?
The OE pin on ADUM3401BRWZ is an active-low control that places all four outputs (OUTA–OUTD) into high-impedance state when asserted (OE = low). Propagation delay from OE assertion to high-Z is ≤8 ns, and from de-assertion to valid logic level is also ≤8 ns. This enables clean bus arbitration in multi-master systems - for example, allowing a microcontroller to release an isolated SPI bus to another processor without signal contention. OE requires no pull-up; it is internally biased and compatible with standard CMOS logic driving levels.
Is ADUM3401BRWZ pin-compatible with other ADuM340x variants?
Yes, ADUM3401BRWZ shares identical pinout, package (SOIC_W), and footprint with all ADuM340x family members including ADUM3400 and ADUM3402 in the same BRW grade. Channel configuration differs - ADUM3401BRWZ has four unidirectional channels (A→B, B→B, C→B, D→B), whereas ADUM3400BRWZ offers all forward-direction and ADUM3402BRWZ provides two forward/two reverse - but physical layout, solder pads, and thermal pad (if present) are fully interchangeable. No PCB redesign is needed when substituting within the BRW speed grade.
ADUM3401BRWZ 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:
- 3/1
- 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
ADUM3401BRWZ FAQ
1.How can I place an order for ADUM3401BRWZ through Aetrix?
Please submit a Request for Quotation (RFQ) for ADUM3401BRWZ 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 ADUM3401BRWZ reliable?
The price and inventory of ADUM3401BRWZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADUM3401BRWZ is usually 5 days.
3.What payment methods are accepted for ADUM3401BRWZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADUM3401BRWZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADUM3401BRWZ?
ADUM3401BRWZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADUM3401BRWZ 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 ADUM3401BRWZ?
For technical support, including ADUM3401BRWZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADUM3401BRWZ requirements.
6.How does Aetrix verify that ADUM3401BRWZ is sourced from the original manufacturer or authorized distributors?
All ADUM3401BRWZ 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 ADUM3401BRWZ meets industry standards.
7.What is the process for return or replacement of ADUM3401BRWZ?
All ADUM3401BRWZ units undergo pre-shipment inspection (PSI). If there is an issue with ADUM3401BRWZ, 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 ADUM3401BRWZ part is unused and in its original packaging.
Return procedure for ADUM3401BRWZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ADUM3401BRWZ 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
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
