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Analog Devices Inc. ADUM1301WTRWZ
- Part No.:
- ADUM1301WTRWZ
- Manufacturer:
- Analog Devices Inc.
- Category:
- Digital Isolators
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
ADUM1301WTRWZ.pdf
- Description:
- DGTL ISO 2500VRMS 3CH GP 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,634
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Product details
Overview
ADUM1301WTRWZ from Analog Devices is a triple-channel digital isolator based on iCoupler® transformer technology, providing galvanic isolation between microcontroller and peripheral interfaces in industrial and automotive systems. It supports bidirectional communication, 3 V/5 V level translation, operates up to 90 Mbps (CRW grade), delivers <2 ns pulse width distortion, and is qualified for automotive applications with 125°C operation.
For engineers reviewing the ADUM1301WTRWZ datasheet, ADUM1301WTRWZ pinout, ADUM1301WTRWZ application, or ADUM1301WTRWZ equivalent, this page provides verified technical context, real-world timing and power specifications, SOIC-16W package details, functional alternatives, and supply-chain support tailored for high-reliability embedded isolation design.
Technical Context
The ADUM1301WTRWZ implements three independent unidirectional or bidirectional isolation channels using monolithic air-core transformers, enabling dc-correct signal transmission without optocoupler drift or aging. Its patented refresh circuit maintains output state during input inactivity or single-side power loss - critical for safety-critical automotive and industrial control loops.
It supports asymmetric supply configurations (e.g., 5 V on side 1 / 3 V on side 2), delivering precise timing with ≤2 ns channel-to-channel matching (codirectional) and >25 kV/μs common-mode transient immunity - ensuring robust operation in noisy motor drives and battery management systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Isolation Voltage (VISO) | 2500 Vrms for 1 minute per UL 1577 - enables reinforced insulation in 400 V DC bus monitoring and EV charging interfaces |
| Max Data Rate | 90 Mbps (CRW grade) - supports high-speed SPI clocking at ≥20 MHz with margin for jitter and layout skew |
| Pulse Width Distortion | ≤2 ns (max) - preserves duty cycle integrity for PWM feedback and encoder signals |
| Propagation Delay Skew | ≤10 ns (CRW grade, codirectional) - ensures synchronized sampling across isolated ADC/DAC channels |
| Supply Range | 2.7 V to 5.5 V per side - allows direct interfacing with 3.3 V MCUs and 5 V legacy peripherals without level shifters |
| Operating Temperature | −40°C to +125°C - certified for under-hood automotive use and industrial PLC backplanes |
| Common-Mode Transient Immunity | >25 kV/μs - suppresses noise coupling in IGBT gate drivers and motor phase current sensing |
Pinout & Package
ADUM1301WTRWZ is housed in a 16-lead SOIC wide-body package (7.5 mm body width, 10.3 mm length), offering 8 mm creepage/clearance and reinforced insulation per DIN EN IEC 60747-17 (VDE 0884-17).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD1 | Primary-side power supply | Supplies logic and isolation transmitter circuitry; accepts 2.7–5.5 V; powers channels A, B, C inputs |
| GND1 | Primary-side ground reference | Return path for VDD1; must be separated from GND2 by isolation barrier |
| INA, INB, INC | Input signals (side 1) | CMOS-compatible digital inputs referenced to VDD1/GND1; drive internal transformers |
| VDD2 | Secondary-side power supply | Supplies receiver circuitry and outputs; independent 2.7–5.5 V domain; enables level translation |
| GND2 | Secondary-side ground reference | Return path for VDD2; galvanically isolated from GND1; defines output logic thresholds |
| OUTA, OUTB, OUTC | Output signals (side 2) | CMOS outputs referenced to VDD2/GND2; drive downstream logic or transceivers |
| OE | Output enable control | Active-low; places all three outputs in high-impedance state when asserted - supports bus sharing and hot-swap |
Key Features
| Feature | Design Value |
|---|---|
| Automotive qualification | AEC-Q100 Grade 1 (−40°C to +125°C) - validated for engine control units and battery management systems |
| DC-correct refresh architecture | Maintains output state indefinitely without input transitions or with only one side powered - eliminates watchdog timer dependency |
| 3 V/5 V level translation | Supports mixed-voltage systems (e.g., 3.3 V MCU ↔ 5 V RS-485 transceiver) without external level shifters |
| Low dynamic power | 0.19 mA/Mbps (input) + 0.05 mA/Mbps (output) - reduces thermal load in dense isolation clusters |
| Safety certifications | UL 1577 (2500 Vrms), IEC/EN/CSA 62368-1, IEC/CSA 60601-1, DIN EN IEC 60747-17 (VIORM = 560 Vpeak) - meets medical, industrial, and EV system requirements |
Applications
| SPI Isolation for Industrial ADCs | Automotive Battery Monitoring Unit (BMU) |
|---|---|
Use Scenario: Isolating SPI interface between host MCU and isolated 24-bit ΣΔ ADC measuring cell voltages in high-voltage battery packs. IC Role / Device Role / Timing Role: ADUM1301WTRWZ provides three independent channels: two for MOSI/MISO and one for SCLK, maintaining sub-ns timing alignment across the barrier. Use Value: Enables safe, accurate voltage sampling at 125°C ambient while rejecting >25 kV/μs transients from switching converters - eliminating measurement corruption and system resets. |
Use Scenario: Signal isolation between battery pack controller and distributed cell monitoring ICs in electric vehicle traction batteries. IC Role / Device Role / Timing Role: ADUM1301WTRWZ isolates UART or custom serial links carrying cell voltage/temperature data, with OE pin enabling daisy-chain polling. Use Value: Meets AEC-Q100 Grade 1 and IEC 60601-1 creepage requirements while supporting 10 Mbps data rates needed for real-time fault reporting - reducing BOM count vs. optocoupler solutions. |
| RS-485 Transceiver Isolation | PLC Digital I/O Module |
Use Scenario: Galvanic isolation of RS-485 transceiver control lines (DE, RE, DI) and differential bus signals in factory automation networks. IC Role / Device Role / Timing Role: ADUM1301WTRWZ isolates direction control and data paths, with tight channel-to-channel matching ensuring simultaneous driver enable/disable. Use Value: Prevents ground loop currents and ESD-induced latch-up in multi-node fieldbus systems - extends uptime in harsh industrial environments. |
Use Scenario: Isolating digital input/output signals between PLC CPU backplane and field-side terminals exposed to 24 V DC surges and lightning-induced transients. IC Role / Device Role / Timing Role: ADUM1301WTRWZ provides three isolated channels per module: two for input status and one for output command, with OE supporting hot-swap diagnostics. Use Value: Achieves >8 mm creepage in SOIC-W package and withstands 125°C ambient - simplifies conformal coating and thermal design in compact DIN-rail enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital isolation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SI8631BB-B-IS | Capacitive isolation; 100 Mbps max; 2.5 kVrms isolation rating; no refresh circuit - requires periodic input toggling for dc correctness | Lower isolation voltage limits use in medical or high-voltage industrial systems; lacks automotive qualification | Prefer when cost-sensitive consumer designs require higher speed but tolerate lower safety margins |
| ISO6731FDWR | Capacitive isolation; 50 Mbps max; 5000 Vrms isolation; 3 V to 5.5 V supplies; no integrated refresh - relies on external watchdog or protocol-level keep-alive | Higher isolation rating suits mains-connected equipment; not AEC-Q100 qualified | Choose for AC/DC power supply monitoring where enhanced creepage is mandatory and automotive operation is not required |
Compared with SI8631BB-B-IS and ISO6731FDWR, ADUM1301WTRWZ uniquely combines automotive qualification, dc-correct refresh, and 2500 Vrms isolation in a single SOIC-16W package - making it the only option for safety-critical, zero-maintenance isolated communication in EV battery systems and industrial controllers.
Availability
ADUM1301WTRWZ is available at Aetrix Electronics and suitable for industrial PLCs, automotive battery management systems, and medical diagnostic equipment requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.
Supply support for ADUM1301WTRWZ 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 ADuM1300/ADuM1301 family was designed specifically for high-reliability multichannel isolation in safety-critical systems - emphasizing low timing skew, automotive-grade reliability, and seamless voltage translation across the isolation barrier.
FAQ
What is the maximum guaranteed data rate for ADUM1301WTRWZ?
The ADUM1301WTRWZ is rated for up to 90 Mbps (NRZ) at 25°C with pulse width distortion ≤2 ns - confirmed in the CRW grade specification tables. At 125°C, the guaranteed maximum remains 90 Mbps per Analog Devices' Rev. M datasheet, with propagation delay skew ≤10 ns for codirectional channels. This enables reliable SPI clocking at 20+ MHz in automotive and industrial applications.
Does ADUM1301WTRWZ support level translation between 3 V and 5 V domains?
Yes, ADUM1301WTRWZ supports true bidirectional level translation: VDD1 may operate from 2.7 V to 5.5 V independently of VDD2 (also 2.7 V to 5.5 V). When VDD1 = 5 V and VDD2 = 3.3 V, inputs referenced to 5 V logic swing correctly drive outputs compatible with 3.3 V CMOS thresholds - eliminating external level shifters in mixed-voltage interfaces like MCU-to-RS-485 transceiver links.
How does the refresh feature in ADUM1301WTRWZ improve system reliability?
The patented refresh feature in ADUM1301WTRWZ continuously monitors input state and retransmits static logic levels across the isolation barrier - ensuring correct output even during prolonged input inactivity or if power is lost on one side. This eliminates reliance on external watchdog timers or protocol-level keep-alive signals, which is essential for fail-safe operation in automotive BMUs and industrial safety controllers where silent failure is unacceptable.
What safety certifications apply to ADUM1301WTRWZ?
ADUM1301WTRWZ carries UL 1577 (2500 Vrms/1 min), IEC/EN/CSA 62368-1, EN 60950-1, IEC/CSA 60601-1 (medical), IEC/CSA 61010-1 (lab equipment), CQC GB4943.1, and DIN EN IEC 60747-17 (VDE 0884-17) with VIORM = 560 Vpeak. These certifications validate its suitability for reinforced insulation in EV chargers, medical imaging subsystems, and industrial machinery with functional safety requirements.
Can ADUM1301WTRWZ replace optocouplers in existing designs without PCB changes?
ADUM1301WTRWZ uses a standard 16-lead SOIC wide-body footprint (7.5 mm × 10.3 mm) identical to many 3-channel optocouplers, enabling drop-in replacement in most layouts. However, due to its lower supply current (e.g., 1.3 mA total quiescent at 3 V vs. >5 mA for typical optocouplers), decoupling capacitor values may be reduced, and no external base resistors or driver transistors are needed - simplifying bill-of-materials and improving long-term stability.
ADUM1301WTRWZ 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:
- 3
- Inputs - Side 1/Side 2:
- 2/1
- Channel Type:
- Unidirectional
- Voltage - Isolation:
- 2500Vrms
- Common Mode Transient Immunity (Min):
- 25kV/µs
- Data Rate:
- 10Mbps
- Propagation Delay tpLH / tpHL (Max):
- 32ns, 32ns
- Pulse Width Distortion (Max):
- 3ns
- 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
ADUM1301WTRWZ FAQ
1.How can I place an order for ADUM1301WTRWZ through Aetrix?
Please submit a Request for Quotation (RFQ) for ADUM1301WTRWZ 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 ADUM1301WTRWZ reliable?
The price and inventory of ADUM1301WTRWZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADUM1301WTRWZ is usually 5 days.
3.What payment methods are accepted for ADUM1301WTRWZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADUM1301WTRWZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADUM1301WTRWZ?
ADUM1301WTRWZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADUM1301WTRWZ 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 ADUM1301WTRWZ?
For technical support, including ADUM1301WTRWZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADUM1301WTRWZ requirements.
6.How does Aetrix verify that ADUM1301WTRWZ is sourced from the original manufacturer or authorized distributors?
All ADUM1301WTRWZ 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 ADUM1301WTRWZ meets industry standards.
7.What is the process for return or replacement of ADUM1301WTRWZ?
All ADUM1301WTRWZ units undergo pre-shipment inspection (PSI). If there is an issue with ADUM1301WTRWZ, 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 ADUM1301WTRWZ part is unused and in its original packaging.
Return procedure for ADUM1301WTRWZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ADUM1301WTRWZ Tags
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