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Analog Devices Inc. ADUM1301WTRWZ-RL
- Part No.:
- ADUM1301WTRWZ-RL
- Manufacturer:
- Analog Devices Inc.
- Category:
- Digital Isolators
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
ADUM1301WTRWZ-RL.pdf
- Description:
- DGTL ISO 2500VRMS 3CH GP 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,974
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Product details
Overview
ADUM1301WTRWZ-RL from Analog Devices is a triple-channel, automotive-grade digital isolator based on iCoupler® transformer technology, providing galvanic isolation between microcontroller and peripheral domains. It supports bidirectional data transfer up to 90 Mbps (CRW grade), operates from 2.7 V to 5.5 V on both sides, and delivers <2 ns pulse width distortion and <2 ns channel-to-channel matching for precision timing in isolated SPI and RS-485 interfaces.
For engineers reviewing the ADUM1301WTRWZ-RL datasheet, ADUM1301WTRWZ-RL pinout, ADUM1301WTRWZ-RL application, or ADUM1301WTRWZ-RL equivalent, key selection criteria include its AEC-Q100 qualification, 2500 Vrms reinforced isolation rating, 125°C operation, output enable function, and mixed-voltage level translation (3 V/5 V) across the barrier - all critical for automotive powertrain and battery management systems.
Technical Context
The ADUM1301WTRWZ-RL implements three independent unidirectional or bidirectional isolation channels using monolithic air-core transformers, eliminating LED aging and CTR drift inherent in optocouplers. Its patented refresh circuit ensures DC correctness during signal inactivity or single-supply loss - a requirement for functional safety in ASIL-B/C systems.
It features separate input and output supply domains (VDD1/VDD2), enabling voltage translation between 3 V and 5 V logic domains while maintaining precise timing: propagation delay skew ≤10 ns (CRW grade), pulse width distortion ≤2 ns, and common-mode transient immunity >25 kV/μs - validated under 125°C automotive operating conditions.
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 | 90 Mbps NRZ (CRW grade), enabling high-speed isolated SPI and CAN FD auxiliary signaling |
| Supply Voltage Range | 2.7 V to 5.5 V on both VDD1 and VDD2 sides - supports mixed 3 V/5 V level translation |
| Pulse Width Distortion | ≤2 ns (max), ensuring minimal duty-cycle degradation in clock or PWM isolation |
| Channel-to-Channel Matching | ≤2 ns (codirectional), critical for synchronized multi-signal isolation in ADC sampling or motor control |
| Operating Temperature | −40°C to +125°C, qualified per AEC-Q100 Grade 1 (automotive ambient) |
| Common-Mode Transient Immunity | >25 kV/μs at both logic high and low outputs - robust against fast-switching noise in EV inverters |
Pinout & Package
ADUM1301WTRWZ-RL is housed in a 16-lead SOIC wide-body package (7.5 mm body width, 10.3 mm length) with creepage/clearance ≥8.3 mm, compliant with reinforced insulation requirements for automotive and industrial applications.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD1 | Primary-side power supply | Supplies input-side logic and isolation transmitter; accepts 2.7–5.5 V |
| GND1 | Primary-side ground reference | Reference for inputs A, B, C and VDD1; must be separated from GND2 by isolation barrier |
| INA, INB, INC | Digital input signals (side 1) | Accept CMOS-level logic; thresholds scale with VDD1 (e.g., VIH = 0.6×VDD1) |
| VDD2 | Secondary-side power supply | Supplies output-side logic and isolation receiver; independent of VDD1 |
| GND2 | Secondary-side ground reference | Reference for outputs OA, OB, OC and VDD2; galvanically isolated from GND1 |
| OA, OB, OC | Digital output signals (side 2) | CMOS-compatible outputs; VOH/VOL defined relative to VDD2 |
| OE | Output enable control | Active-low; places OA/OB/OC in high-impedance state when asserted |
| NC | No connect | Pins 1, 16 - internally unused; must remain unconnected per datasheet |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 qualification | Grade 1 (−40°C to +125°C ambient), supporting automotive powertrain and charging systems |
| Reinforced isolation | 2500 Vrms UL rating + 560 Vpeak working voltage per DIN EN IEC 60747-17 - meets ASIL-B system requirements |
| DC-correct refresh architecture | Maintains output state during prolonged input inactivity or loss of VDD2 - eliminates need for external watchdog timers |
| Bidirectional channel configuration | Configurable as 3 unidirectional or 2 forward + 1 reverse channels via PCB routing - supports SPI full-duplex isolation |
| Low dynamic power | 0.19 mA/Mbps (input) and 0.05 mA/Mbps (output) at 3 V - enables efficient 90 Mbps operation in thermally constrained ECUs |
Applications
| Motor Control Feedback Isolation | SPI Interface Isolation |
|---|---|
Use Scenario: Isolating encoder position signals and gate driver status feedback in 400 V–800 V traction inverters. IC Role / Device Role / Timing Role: ADUM1301WTRWZ-RL provides three independent, low-skew isolation paths for PWM sync, fault reporting, and current sense data - preserving timing integrity under dV/dt stress >25 kV/μs. Use Value: Enables ASIL-B compliance without external timing compensation; eliminates optocoupler aging drift in 15-year automotive service life. | Use Scenario: Galvanically isolating SPI communication between MCU and isolated ADCs or isolated DACs in battery management systems (BMS). IC Role / Device Role / Timing Role: ADUM1301WTRWZ-RL carries SCLK, MOSI, and MISO across the isolation barrier with <2 ns pulse width distortion - preserving setup/hold margins at 20+ MHz SPI clocks. Use Value: Supports daisy-chained isolated ADCs with deterministic latency, avoiding SPI frame corruption due to channel skew. |
| Automotive RS-485 Transceiver Isolation | Onboard Charger (OBC) Control Isolation |
Use Scenario: Isolating UART-to-RS-485 transceivers in vehicle diagnostic (UDS) and gateway modules operating in noisy 12 V/48 V domains. IC Role / Device Role / Timing Role: ADUM1301WTRWZ-RL isolates TX, RX, and DE/RE control lines between MCU and RS-485 PHY - enabling 3 V MCU to drive 5 V transceivers with level translation. Use Value: Eliminates ground loop errors and EMI-induced bus faults; supports hot-plug resilience via output enable (OE) pin. | Use Scenario: Isolating control signals (enable, fault, soft-start) between low-voltage MCU domain and high-voltage SiC half-bridge drivers in EV onboard chargers. IC Role / Device Role / Timing Role: ADUM1301WTRWZ-RL delivers synchronized gate drive enable/disable and overcurrent fault reporting across 2500 Vrms barrier - critical for safe SiC switching at 100+ kHz. Use Value: Reduces system-level failure rate by preventing latch-up from common-mode transients during AC/DC conversion. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital isolator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SI8631BB-B-IS | Capacitive isolation; 5000 Vrms rating; max 150 Mbps; no integrated refresh circuit | Higher isolation voltage but lacks guaranteed DC correctness during single-supply loss | Prefer for non-automotive industrial apps requiring higher speed; verify refresh behavior in safety-critical fail-safe states |
| ISO7731FDWR | Capacitive isolation; 5000 Vrms; AEC-Q100 Grade 1; 100 Mbps; integrated refresh | Same automotive qualification and refresh capability, but uses different packaging (SOIC-16 wide vs. narrow body) | Valid alternative if board layout allows SOIC-16 narrow (5.3 mm width); verify creepage (6.6 mm) meets system insulation requirements |
Compared with SI8631BB-B-IS and ISO7731FDWR, ADUM1301WTRWZ-RL offers proven transformer-based noise immunity (>25 kV/μs) and AEC-Q100-compliant thermal derating at 125°C - making it preferred for high-dV/dt automotive power stages where capacitive isolators may exhibit transient-induced glitches.
Availability
ADUM1301WTRWZ-RL is available at Aetrix Electronics and suitable for automotive powertrain control, battery management systems, and onboard charger designs requiring stable component supply, long-term lifecycle support, and AEC-Q100-compliant sourcing.
Supply support for ADUM1301WTRWZ-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, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets.
The ADuM1301 series belongs to Analog Devices' iCoupler® digital isolator product line, designed specifically for functional safety-critical isolation in automotive and industrial systems requiring reinforced insulation, high temperature operation, and deterministic timing behavior.
FAQ
What is the maximum operating temperature for ADUM1301WTRWZ-RL?
ADUM1301WTRWZ-RL is rated for continuous operation from −40°C to +125°C ambient temperature and is qualified per AEC-Q100 Grade 1. This rating is validated across all electrical parameters including propagation delay, pulse width distortion, and isolation lifetime - making it suitable for under-hood automotive applications such as engine control units and traction inverters where thermal stress is extreme.
Does ADUM1301WTRWZ-RL support level translation between 3 V and 5 V domains?
Yes, ADUM1301WTRWZ-RL supports true bidirectional level translation: VDD1 can operate from 2.7 V to 5.5 V independently of VDD2, which also ranges from 2.7 V to 5.5 V. For example, with VDD1 = 3.3 V and VDD2 = 5 V, inputs referenced to 3.3 V logic correctly drive 5 V outputs, and vice versa - enabling seamless interface between low-voltage MCUs and 5 V peripherals in automotive body control modules.
How does the refresh feature in ADUM1301WTRWZ-RL improve system reliability?
The patented refresh feature in ADUM1301WTRWZ-RL continuously monitors input state and retransmits static logic levels across the isolation barrier even during prolonged signal inactivity or loss of one supply rail. This guarantees DC correctness without external circuitry - a critical advantage over optocouplers and some capacitive isolators that may drift or fail silently, especially in ASIL-B safety mechanisms used in ADUM1301WTRWZ-RL-based battery disconnect units.
What safety certifications apply to ADUM1301WTRWZ-RL?
ADUM1301WTRWZ-RL carries UL 1577 (2500 Vrms, 1 min), DIN EN IEC 60747-17 (VDE 0884-17, VIORM = 560 Vpeak), IEC/EN/CSA 62368-1, EN 60950-1, IEC/CSA 60601-1, IEC/CSA 61010-1, and CQC GB4943.1 certifications. These approvals validate its use in reinforced insulation systems for automotive, medical, and industrial equipment where double protection against electric shock is mandated.
Can ADUM1301WTRWZ-RL be used in SPI full-duplex configurations?
Yes, ADUM1301WTRWZ-RL supports SPI full-duplex isolation by assigning two channels for MOSI/MISO (bidirectional or unidirectional) and one for SCLK - all with matched propagation delays (<2 ns skew). Its output enable (OE) pin further allows tri-state control of MISO during multi-slave arbitration. The CRW-grade timing performance ensures reliable operation at SPI clock rates up to 25 MHz in automotive BMS applications.
ADUM1301WTRWZ-RL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- 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:
- 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-RL FAQ
1.How can I place an order for ADUM1301WTRWZ-RL through Aetrix?
Please submit a Request for Quotation (RFQ) for ADUM1301WTRWZ-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 ADUM1301WTRWZ-RL reliable?
The price and inventory of ADUM1301WTRWZ-RL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADUM1301WTRWZ-RL is usually 5 days.
3.What payment methods are accepted for ADUM1301WTRWZ-RL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADUM1301WTRWZ-RL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADUM1301WTRWZ-RL?
ADUM1301WTRWZ-RL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADUM1301WTRWZ-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 ADUM1301WTRWZ-RL?
For technical support, including ADUM1301WTRWZ-RL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADUM1301WTRWZ-RL requirements.
6.How does Aetrix verify that ADUM1301WTRWZ-RL is sourced from the original manufacturer or authorized distributors?
All ADUM1301WTRWZ-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 ADUM1301WTRWZ-RL meets industry standards.
7.What is the process for return or replacement of ADUM1301WTRWZ-RL?
All ADUM1301WTRWZ-RL units undergo pre-shipment inspection (PSI). If there is an issue with ADUM1301WTRWZ-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 ADUM1301WTRWZ-RL part is unused and in its original packaging.
Return procedure for ADUM1301WTRWZ-RL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ADUM1301WTRWZ-RL Tags
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ISO1212DBQR
Texas Instruments
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ISO6721BDR
Texas Instruments
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SI8710AC-B-ISR
Skyworks Solutions Inc.
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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
Texas Instruments
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ISO7741FDWR
Texas Instruments
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