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Analog Devices Inc. ADUM1201WURZ
- Part No.:
- ADUM1201WURZ
- Manufacturer:
- Analog Devices Inc.
- Category:
- Digital Isolators
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
ADUM1201WURZ.pdf
- Description:
- DGTL ISO 2500VRMS 2CH GP 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:143
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Product details
Overview
ADUM1201WURZ from Analog Devices is an automotive-grade dual-channel digital isolator based on iCoupler® transformer technology, providing galvanic isolation between two independent signal paths. It supports bidirectional communication, 3 V/5 V level translation, and operates up to 25 Mbps with ≤3 ns pulse width distortion and ≤3 ns channel-to-channel matching at 125°C. It is used in battery monitor systems and motor drive interfaces where high common-mode transient immunity (>25 kV/µs) and AEC-Q100 qualification are required.
For engineers reviewing the ADUM1201WURZ datasheet, ADUM1201WURZ pinout, ADUM1201WURZ application, or ADUM1201WURZ equivalent, this page delivers verified specifications, package mapping, functional role in SPI/RS-485 isolation, thermal performance at 125°C, and validated alternative options for automotive and industrial designs.
Technical Context
The ADUM1201WURZ implements two unidirectional isolated channels using monolithic air-core transformers-no LEDs or photodiodes-enabling stable timing across temperature and lifetime. Its patented refresh circuit ensures DC correctness during power-up, idle states, and absence of input transitions.
It supports asymmetric supply operation (e.g., 5 V on side 1, 3 V on side 2), delivers precise propagation delay matching (<3 ns), and maintains >25 kV/µs common-mode transient immunity under full 125°C operation-critical for hybrid electric vehicle powertrain monitoring and isolated CAN/UART gateways.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Isolation Rating | 2500 VRMS for 1 minute; VIORM = 560 VPEAK - meets reinforced insulation requirements per DIN EN IEC 60747-17 (VDE 0884-17) |
| Max Data Rate | 25 Mbps (CR grade) - supports high-speed SPI clocking and RS-485 transceiver control without timing skew |
| Pulse Width Distortion | ≤3 ns - preserves duty cycle integrity for PWM and clock distribution across isolation barrier |
| Channel Matching | ≤3 ns (codirectional) - enables synchronous sampling in dual ADC/DAC interfaces |
| Supply Range | 2.7 V to 5.5 V per side - allows mixed-voltage system interfacing (e.g., 3.3 V MCU to 5 V sensor bus) |
| Operating Temp | −40°C to +125°C - qualified per AEC-Q100 Grade 1, suitable for under-hood automotive electronics |
| Common-Mode Immunity | >25 kV/µs - rejects fast transients in motor drive inverters and battery management cell monitoring |
Pinout & Package
Narrow-body RoHS-compliant SOIC-8 package (5.3 mm × 6.2 mm, 1.55 mm height), creepage/clearance ≥5.5 mm, rated for reinforced insulation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD1 | Primary-side power supply | Supplies channel A input and channel B output logic; accepts 2.7–5.5 V independently of VDD2 |
| GND1 | Primary-side ground reference | Return path for VDD1; forms isolation barrier boundary with GND2 |
| INA | Input A (side 1) | Accepts CMOS-level signal; drives isolated output OUTA on secondary side |
| INB | Input B (side 1) | Accepts CMOS-level signal; drives isolated output OUTB on secondary side |
| VDD2 | Secondary-side power supply | Supplies channel A output and channel B input logic; enables level translation across barrier |
| GND2 | Secondary-side ground reference | Return path for VDD2; galvanically isolated from GND1 |
| OUTA | Output A (side 2) | CMOS output referenced to VDD2/GND2; matches INA timing with <3 ns PWD |
| OUTB | Output B (side 2) | CMOS output referenced to VDD2/GND2; matches INB timing with <3 ns PWD |
Key Features
| Feature | Design Value |
|---|---|
| iCoupler® transformer isolation | Eliminates LED aging, CTR drift, and temperature-dependent nonlinearity-enables 50-year lifetime reliability in automotive applications |
| Patented DC refresh | Maintains correct logic state during static inputs or power sequencing-no external watchdog or refresh circuit needed |
| 3 V/5 V level translation | Allows direct interface between 3.3 V microcontrollers and 5 V industrial buses (e.g., RS-485 transceivers) without external level shifters |
| AEC-Q100 Grade 1 qualification | Validated for automotive use up to 125°C ambient-supports battery management systems and traction inverter controls |
| Low dynamic power | 6.3 mA per side at 25 Mbps (5 V/5 V) - reduces thermal load in densely packed ECU modules |
Applications
| Battery Cell Monitor Interface | SPI Isolation for Automotive MCU |
|---|---|
Use Scenario: Isolating voltage/current measurement signals from individual Li-ion cells in a 400 V battery pack. IC Role / Device Role / Timing Role: ADUM1201WURZ provides dual-channel galvanic separation between the analog front-end ASIC and the safety-critical MCU, preserving timing integrity for synchronized sampling. Use Value: Enables accurate cell balancing decisions under high dv/dt noise (e.g., inverter switching) while meeting ASIL-D functional safety constraints via reinforced insulation. |
Use Scenario: Isolating SPI clock, MOSI, MISO, and CS lines between an automotive-grade ARM Cortex-M7 MCU and an isolated ADC in a motor control unit. IC Role / Device Role / Timing Role: ADUM1201WURZ carries bidirectional SPI traffic across isolation barrier with <3 ns channel skew-ensuring deterministic read/write timing at 20 MHz SCLK. Use Value: Eliminates ground loop errors and prevents fault propagation from high-power inverter stage to control domain without degrading SPI throughput. |
| RS-485 Transceiver Isolation | Hybrid Electric Vehicle Onboard Charger |
Use Scenario: Isolating control and status signals between a 3.3 V host controller and a 5 V isolated RS-485 transceiver in a charging station communication module. IC Role / Device Role / Timing Role: ADUM1201WURZ translates logic levels and blocks ground potential differences while maintaining <100 ns total propagation delay asymmetry. Use Value: Prevents data corruption during hot-plug events and meets IEC 61000-4-5 surge immunity requirements through robust common-mode rejection. |
Use Scenario: Signal isolation between the AC/DC converter controller and the vehicle's 12 V CAN network in an OBC (onboard charger) unit. IC Role / Device Role / Timing Role: ADUM1201WURZ isolates enable, fault, and status signals with AEC-Q100 compliance and 125°C operation-surviving under-hood thermal stress. Use Value: Ensures safe shutdown coordination during overtemperature or overcurrent faults without compromising CAN message timing or integrity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-channel digital isolator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Si8621ED-IS | Capacitive isolation; 25 Mbps max; 5000 VRMS rating; no refresh circuit - requires external supervision for DC correctness | Higher isolation voltage but lacks automotive qualification; not AEC-Q100 certified | Prefer when higher isolation rating is mandatory and DC stability is managed externally |
| ISO7721FDWR | Capacitive isolation; 100 Mbps max; 5000 VRMS; integrated LDO; 125°C operation; AEC-Q100 Grade 1 | Higher speed and integrated power - adds complexity if only signal isolation is needed | Choose when system requires >25 Mbps or needs regulated 3.3 V output for downstream logic |
Compared with Si8621ED-IS and ISO7721FDWR, the ADUM1201WURZ offers proven transformer-based DC stability without supervision, optimal power efficiency at 25 Mbps, and seamless 3 V/5 V translation-making it ideal for cost- and space-constrained automotive BMS and motor control interfaces where reliability trumps raw speed.
Availability
ADUM1201WURZ is available at Aetrix Electronics and suitable for battery management systems, motor drive controls, and onboard charger interfaces requiring stable component supply across automotive production lifecycles.
Supply support for ADUM1201WURZ 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 technologies, serving industrial, automotive, communications, and healthcare markets.
The ADUM1201WURZ belongs to the iCoupler® digital isolator product line, engineered specifically for high-reliability, high-noise environments in automotive and industrial systems requiring galvanic isolation with precise timing and long-term stability.
FAQ
What is the maximum operating temperature for ADUM1201WURZ?
The ADUM1201WURZ is rated for continuous operation from −40°C to +125°C ambient and is AEC-Q100 Grade 1 qualified. Its electrical specifications-including propagation delay, pulse width distortion, and supply current-are guaranteed across this full range, making it suitable for under-hood automotive applications such as battery monitors and motor controllers where thermal stress is severe.
Does ADUM1201WURZ support bidirectional signal flow on each channel?
No, ADUM1201WURZ implements two unidirectional channels: INA → OUTA and INB → OUTB. Each channel transfers logic signals in one direction only. For true bidirectional isolation (e.g., I²C), external logic or a different isolator model like ADUM1250 would be required. The ADUM1201WURZ datasheet explicitly defines its pin functions as input-only on side 1 and output-only on side 2.
Can ADUM1201WURZ operate with different supply voltages on each side?
Yes, ADUM1201WURZ supports mixed-supply operation: VDD1 and VDD2 may be independently set between 2.7 V and 5.5 V. This enables 3.3 V MCU-to-5 V RS-485 transceiver interfacing without external level shifters. Electrical characteristics-including timing and current consumption-are specified for 5 V/3 V and 3 V/5 V configurations in Tables 3 and 4 of the Rev. L datasheet.
What safety certifications does ADUM1201WURZ hold?
ADUM1201WURZ is certified to UL 1577 (2500 VRMS, 1 min), DIN EN IEC 60747-17 (VDE 0884-17), IEC/EN/CSA 62368-1, IEC/CSA 61010-1, and CQC GB4943.1. Its VIORM = 560 VPEAK and reinforced insulation structure meet requirements for functional and basic insulation in automotive and industrial end-equipment per ISO 26262 and IEC 61800-5-1.
How does the refresh feature in ADUM1201WURZ ensure DC correctness?
The ADUM1201WURZ incorporates a patented internal refresh circuit that periodically samples and retransmits the last valid input state when no transitions occur-ensuring correct logic level retention during idle periods, power-up, or brownout conditions. This eliminates the need for external refresh pulses or watchdog timers, a key advantage over optocouplers and some capacitive isolators that lack inherent DC stability.
ADUM1201WURZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Technology:
- Magnetic Coupling
- Type:
- General Purpose
- Isolated Power:
- No
- Number of Channels:
- 2
- Inputs - Side 1/Side 2:
- 1/1
- Channel Type:
- Unidirectional
- Voltage - Isolation:
- 2500Vrms
- Common Mode Transient Immunity (Min):
- 25kV/µs
- Data Rate:
- 25Mbps
- 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:
- Automotive
- Qualification:
- -
- Operating Temperature:
- -40°C ~ 125°C
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
ADUM1201WURZ FAQ
1.How can I place an order for ADUM1201WURZ through Aetrix?
Please submit a Request for Quotation (RFQ) for ADUM1201WURZ 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 ADUM1201WURZ reliable?
The price and inventory of ADUM1201WURZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADUM1201WURZ is usually 5 days.
3.What payment methods are accepted for ADUM1201WURZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADUM1201WURZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADUM1201WURZ?
ADUM1201WURZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADUM1201WURZ 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 ADUM1201WURZ?
For technical support, including ADUM1201WURZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADUM1201WURZ requirements.
6.How does Aetrix verify that ADUM1201WURZ is sourced from the original manufacturer or authorized distributors?
All ADUM1201WURZ 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 ADUM1201WURZ meets industry standards.
7.What is the process for return or replacement of ADUM1201WURZ?
All ADUM1201WURZ units undergo pre-shipment inspection (PSI). If there is an issue with ADUM1201WURZ, 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 ADUM1201WURZ part is unused and in its original packaging.
Return procedure for ADUM1201WURZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ADUM1201WURZ Tags
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ISO1212DBQR
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ISO6721BDR
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SI8710AC-B-ISR
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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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