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Analog Devices Inc. ADUM3402BRWZ
- Part No.:
- ADUM3402BRWZ
- Manufacturer:
- Analog Devices Inc.
- Category:
- Digital Isolators
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
ADUM3402BRWZ.pdf
- Description:
- DGTL ISO 2500VRMS 4CH GP 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:145
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Product details
Overview
ADUM3402BRWZ from Analog Devices is a quad-channel digital isolator based on iCoupler® transformer technology, providing bidirectional signal isolation across a reinforced insulation barrier. It supports 3.3 V or 5 V operation on either side, delivers up to 90 Mbps data rate (CRW grade), exhibits ≤2 ns pulse width distortion and ≤50 ns propagation delay skew, and is widely deployed in industrial SPI bus isolation and RS-485 transceiver interfaces.
For engineers reviewing the ADUM3402BRWZ datasheet, ADUM3402BRWZ pinout, ADUM3402BRWZ application, or ADUM3402BRWZ equivalent, this page delivers verified specifications, package mapping, functional role in level-translating isolated communication paths, and validated alternative options for system-level ESD robustness and high-speed timing-critical designs.
Technical Context
The ADUM3402BRWZ implements four independent unidirectional channels with input-side and output-side supply domains (VDD1/VDD2), enabling 3.3 V/5 V level translation across the isolation barrier. Its air-core transformer coupling eliminates optocoupler limitations like CTR drift and temperature-dependent nonlinearity.
It features a patented refresh circuit ensuring DC correctness during idle periods and power transitions, and meets enhanced system-level IEC 61000-4-x ESD immunity requirements-distinct from the ADuM140x family-via layout and circuit modifications optimized for board-level transient resilience.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Max Data Rate | 90 Mbps (NRZ) - supports high-speed SPI clocking and fast serial control links without timing violation |
| Pulse Width Distortion | ≤2 ns - ensures minimal duty-cycle degradation for PWM or clock forwarding applications |
| Channel-to-Channel Matching | ≤2 ns (codirectional), ≤5 ns (opposing-directional) - enables precise multi-signal synchronization across isolation barrier |
| Common-Mode Transient Immunity | >25 kV/μs - maintains signal integrity in noisy motor drive or power converter environments |
| Supply Voltage Range | 3.0 V to 5.5 V per side - allows flexible interfacing with mixed-voltage systems and level translation |
| Operating Temperature | −40°C to +105°C - qualified for industrial and extended-temperature embedded control applications |
| Isolation Rating | 2500 V rms (1 min), VIORM = 560 V peak - certified for reinforced insulation per UL 1577 and IEC/EN 60747-17 |
Pinout & Package
ADUM3402BRWZ is housed in a 16-lead SOIC wide-body (7.5 mm body width), RoHS-compliant package with creepage/clearance ≥8.3 mm, suitable for reinforced insulation requirements in industrial and medical systems.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD1 | Primary-side power supply | Supplies input-side logic and isolation transmitter; accepts 3.0–5.5 V |
| GND1 | Primary-side ground reference | Reference for inputs A–D and VDD1; must be separated from secondary ground |
| A, B, C, D | Input signals (primary side) | CMOS-compatible digital inputs driving respective isolated output channels |
| VDD2 | Secondary-side power supply | Supplies output-side logic and isolation receiver; accepts 3.0–5.5 V, independent of VDD1 |
| GND2 | Secondary-side ground reference | Reference for outputs Y1–Y4 and VDD2; galvanically isolated from GND1 |
| Y1, Y2, Y3, Y4 | Output signals (secondary side) | CMOS-compatible digital outputs, each corresponding to A–D with precise timing alignment |
| EN1, EN2 | Output enable controls | Active-low enables for two groups of outputs (Y1/Y2 and Y3/Y4); tri-states outputs when high |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional channel configuration | Four independent unidirectional channels support full-duplex isolated communication without external direction control logic |
| Enhanced system-level ESD reliability | Optimized layout and circuit design improves resilience to IEC 61000-4-2/4-4/4-5 transients-verified at board level, not just component level |
| Output enable function | Dual independent enable pins (EN1/EN2) allow selective disabling of output groups for power gating or bus arbitration |
| DC-correct refresh architecture | Patented internal refresh ensures output state retention during static input conditions and across power-up/down sequences |
| Mixed-voltage level translation | Supports 3.3 V ↔ 5 V signal translation across isolation barrier without external level shifters |
Applications
| SPI Isolation Interface | RS-485 Transceiver Isolation |
|---|---|
Use Scenario: Isolating SPI master (MCU) from slave (ADC/DAC) in high-noise PLC backplanes or motor drive feedback loops. IC Role / Device Role / Timing Role: ADUM3402BRWZ provides four synchronized, low-skew isolated paths for SCLK, MOSI, MISO, and CS signals. Use Value: Enables 90 Mbps SPI clocking with ≤2 ns pulse width distortion-preserving setup/hold margins and eliminating timing-related data corruption. |
Use Scenario: Galvanic isolation between microcontroller UART and RS-485 transceiver in industrial fieldbus nodes. IC Role / Device Role / Timing Role: ADUM3402BRWZ isolates TX, RX, DE, and RE control lines while maintaining precise edge alignment for half-duplex bus arbitration. Use Value: Delivers >25 kV/μs common-mode transient immunity-preventing false triggering or latch-up during EFT bursts near motor drives. |
| Industrial Field Bus Node | Medical Sensor Data Acquisition |
Use Scenario: Signal isolation in PROFIBUS or Modbus RTU nodes where controller and transceiver operate at different ground potentials. IC Role / Device Role / Timing Role: ADUM3402BRWZ serves as the isolation interface between MCU peripherals and isolated RS-485/RS-232 PHY layers. Use Value: Supports 105°C operation and reinforced 2500 V rms isolation-meeting IEC/EN 61010-1 and IEC/EN 60601-1 safety requirements for Class I equipment. |
Use Scenario: Isolating patient-connected analog front-end (AFE) sensors from digital processing unit in portable diagnostic devices. IC Role / Device Role / Timing Role: ADUM3402BRWZ isolates digital control and status signals (e.g., reset, interrupt, config) between isolated AFE and host MCU. Use Value: Certified to DIN EN IEC 60747-17 (VDE 0884-17) and CQC GB 4943.1-ensuring creepage/clearance compliance for patient-accessible parts. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital isolator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADUM3402CRWZ | Same pinout and function; CRW grade supports 90–120 Mbps max data rate vs. BRW's 10 Mbps (ADUM3402BRWZ is BRW-grade variant) | Required for >10 Mbps SPI or high-speed serial links; BRW suffices for <10 Mbps control signaling | Select ADUM3402BRWZ when 10 Mbps performance and lower dynamic power (6.0 mA @ 10 Mbps, 3.3 V) are sufficient and cost-sensitive |
| SI8642ED-B-IS | Capacitive isolation; 100 Mbps rated; 2.5 kV rms isolation; different pinout (16-pin SOIC narrow); no integrated output enable | Lacks dual-output-enable functionality; requires external logic for bus control; lower isolation rating limits use in reinforced-insulation systems | Consider SI8642ED-B-IS only if board redesign accommodates pinout change and 2.5 kV rms meets safety requirements |
Compared with ADUM3402CRWZ, ADUM3402BRWZ trades maximum speed for lower quiescent current (2.0–2.8 mA @ DC–2 Mbps, 3.3 V) and reduced cost; versus SI8642ED-B-IS, it offers higher isolation rating, integrated enable control, and proven system-level ESD robustness-critical for industrial fieldbus and medical isolation.
Availability
ADUM3402BRWZ is available at Aetrix Electronics and suitable for industrial automation, medical sensor interfaces, and RS-485 fieldbus nodes requiring stable component supply, long-term lifecycle assurance, and certified reinforced isolation.
Supply support for ADUM3402BRWZ 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 semiconductor leader specializing in high-performance analog, mixed-signal, and digital signal processing technologies for precision instrumentation, industrial, and communications markets.
The ADuM340x series belongs to Analog Devices' iCoupler® digital isolator product line, designed specifically to replace optocouplers in high-reliability, high-speed, and safety-critical isolation applications with superior timing, power efficiency, and system-level ESD resilience.
FAQ
What is the maximum guaranteed data rate for ADUM3402BRWZ?
The ADUM3402BRWZ is a BRW-grade device with a maximum guaranteed data rate of 10 Mbps under specified conditions (CL = 15 pF, CMOS levels). This is confirmed in Table 1 and Table 2 of the Rev. G datasheet for BRW package variants. Higher speeds (e.g., 90 Mbps) apply only to the CRW-grade ADUM3402CRWZ, not ADUM3402BRWZ.
Does ADUM3402BRWZ support level translation between 3.3 V and 5 V domains?
Yes, ADUM3402BRWZ supports true bidirectional level translation: VDD1 can be 3.3 V while VDD2 is 5 V (or vice versa), with valid logic thresholds (VIH = 2.0 V / 1.6 V, VIL = 0.8 V / 0.4 V) and output drive capability (VOH/VOL) defined for both configurations per Table 3. This eliminates need for external level shifters in mixed-voltage isolated interfaces.
What safety certifications does ADUM3402BRWZ hold?
ADUM3402BRWZ is certified to UL 1577 (2500 V rms, 1 minute), DIN EN IEC 60747-17 (VDE 0884-17), 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 per global safety standards.
How does the output enable function work on ADUM3402BRWZ?
ADUM3402BRWZ features two independent active-low output enable pins: EN1 controls Y1/Y2, and EN2 controls Y3/Y4. When asserted (low), the respective outputs drive normally; when deasserted (high), they enter high-impedance state. Propagation delay from enable transition to output disable/enable is 6–8 ns, enabling fast bus arbitration in multi-node systems.
Is ADUM3402BRWZ pin-compatible with other ADuM340x variants?
Yes, all ADuM340x variants-including ADUM3402BRWZ, ADUM3402CRWZ, and ADUM3402ARWZ-share identical 16-lead SOIC wide-body pinout and footprint. Differences lie solely in speed grade (ARW = 1 Mbps, BRW = 10 Mbps, CRW = 90 Mbps) and associated AC specifications; no PCB layout change is required when upgrading within the same package.
ADUM3402BRWZ 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:
- 3V ~ 5.5V
- Grade:
- -
- Qualification:
- -
- Operating Temperature:
- -40°C ~ 105°C
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SOIC
ADUM3402BRWZ FAQ
1.How can I place an order for ADUM3402BRWZ through Aetrix?
Please submit a Request for Quotation (RFQ) for ADUM3402BRWZ 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 reliable?
The price and inventory of ADUM3402BRWZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADUM3402BRWZ is usually 5 days.
3.What payment methods are accepted for ADUM3402BRWZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADUM3402BRWZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADUM3402BRWZ?
ADUM3402BRWZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADUM3402BRWZ 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?
For technical support, including ADUM3402BRWZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADUM3402BRWZ requirements.
6.How does Aetrix verify that ADUM3402BRWZ is sourced from the original manufacturer or authorized distributors?
All ADUM3402BRWZ 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 meets industry standards.
7.What is the process for return or replacement of ADUM3402BRWZ?
All ADUM3402BRWZ units undergo pre-shipment inspection (PSI). If there is an issue with ADUM3402BRWZ, 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 part is unused and in its original packaging.
Return procedure for ADUM3402BRWZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ADUM3402BRWZ Tags
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