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Analog Devices Inc. ADUM1201WSRZ
- Part No.:
- ADUM1201WSRZ
- Manufacturer:
- Analog Devices Inc.
- Category:
- Digital Isolators
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
ADUM1201WSRZ.pdf
- Description:
- DGTL ISO 2500VRMS 2CH GP 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,169
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Product details
Overview
ADUM1201WSRZ from Analog Devices is a dual-channel, automotive-grade digital isolator based on iCoupler® transformer technology, providing galvanic isolation between two independent signal paths. It supports bidirectional communication at up to 25 Mbps (CR grade), operates from 2.7 V to 5.5 V on either side, and delivers 3 ns maximum pulse width distortion and 3 ns channel-to-channel matching. It is used in battery monitor systems and motor drive interfaces requiring high common-mode transient immunity (>25 kV/µs) and AEC-Q100 qualification.
For engineers reviewing the ADUM1201WSRZ datasheet, ADUM1201WSRZ pinout, ADUM1201WSRZ application, or ADUM1201WSRZ equivalent, this page provides verified technical context, real-world timing performance data, supply current behavior across voltage and data rate combinations, safety certification details, and validated alternative options for automotive and industrial isolation designs.
Technical Context
The ADUM1201WSRZ implements two unidirectional isolated channels using monolithic air-core transformers-no LEDs or photodiodes-enabling deterministic propagation delay (20–45 ns), <3 ns pulse width distortion, and guaranteed DC correctness via patented refresh circuitry during power-up and idle states. Its architecture supports mixed-voltage operation (e.g., 3 V/5 V across barrier) without level-shifting components.
It meets DIN EN IEC 60747-17 (VDE 0884-17) with VIORM = 560 VPEAK and VISO = 2500 VRMS for 1 minute, and achieves >25 kV/µs common-mode transient immunity under both logic-high and logic-low output conditions. The device is rated for continuous operation at 125°C ambient and qualified per AEC-Q100 Grade 1.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Isolation Rating | 2500 VRMS for 1 minute (UL 1577); 560 VPEAK working voltage (DIN EN IEC 60747-17) |
| Max Data Rate | 25 Mbps (CR grade) - guaranteed ≤3 ns pulse width distortion at full rate |
| Propagation Delay | 20–45 ns - enables precise timing in SPI clock/data paths and encoder feedback loops |
| Supply Voltage Range | 2.7 V to 5.5 V per side - supports 3 V/5 V level translation across isolation barrier |
| Quiescent Current | 0.8 mA per channel at 3 V (DC–2 Mbps); 6.3 mA per side at 25 Mbps, 5 V |
| Operating Temperature | −40°C to +125°C - AEC-Q100 qualified for automotive battery monitoring and motor control |
| Common-Mode Immunity | >25 kV/µs - maintains signal integrity in noisy EV powertrain and industrial motor drive environments |
Pinout & Package
Narrow-body SOIC-8 package (5.3 mm × 6.2 mm, 1.55 mm height), RoHS-compliant, creepage/clearance ≥5.5 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD1 | Primary-side supply | Power for Channel A input and Channel B output; accepts 2.7–5.5 V |
| GND1 | Primary-side ground | Reference for inputs IA, IB and outputs OA, OB on primary side |
| IA | Channel A input | Logic signal input referenced to GND1; drives isolated output OA |
| IB | Channel B input | Logic signal input referenced to GND1; drives isolated output OB |
| OA | Channel A output | Isolated logic output referenced to GND2; mirrors IA with <45 ns delay |
| OB | Channel B output | Isolated logic output referenced to GND2; mirrors IB with <45 ns delay |
| GND2 | Secondary-side ground | Reference for outputs OA, OB and inputs on secondary side |
| VDD2 | Secondary-side supply | Power for Channel A output and Channel B input; accepts 2.7–5.5 V |
Key Features
| Feature | Design Value |
|---|---|
| iCoupler® transformer isolation | Eliminates LED aging, CTR drift, and temperature-dependent nonlinearity of optocouplers |
| Patented refresh circuitry | Guarantees DC-correct output state during power-up, power-down, and static input conditions |
| Bidirectional channel configuration | Supports flexible signal routing: IA→OA and IB→OB (ADUM1201), unlike ADUM1200's unidirectional pair |
| Mixed-voltage operation | Enables 3 V microcontroller to communicate with 5 V transceiver without external level shifters |
| AEC-Q100 Grade 1 qualification | Validated for automotive use up to 125°C ambient, including thermal cycling and HAST |
Applications
| Battery Monitor Interface | SPI Isolation for Data Converters |
|---|---|
Use Scenario: Isolating cell voltage and temperature sensing signals from high-voltage battery packs (400–800 V) to low-voltage MCU domains in EVs and ESS. IC Role / Device Role / Timing Role: Dual-channel isolator conveying ADC serial data and conversion-ready strobes while blocking hazardous common-mode transients. Use Value: Enables safe, accurate monitoring at 25 Mbps with <3 ns skew-critical for synchronized multi-cell sampling in ISO 26262-compliant BMS. |
Use Scenario: Isolating SPI clock, MOSI, MISO, and CS lines between an industrial PLC controller and isolated ADC/DAC modules. IC Role / Device Role / Timing Role: Provides matched-propagation dual-channel isolation for full-duplex SPI, preserving setup/hold timing margins at 20+ MHz. Use Value: Maintains 3 ns channel-to-channel matching and <45 ns total delay-ensuring reliable read/write cycles without added timing guardbands. |
| RS-485 Transceiver Isolation | Motor Drive Feedback Loop |
Use Scenario: Galvanically isolating RS-485 differential bus signals in factory automation networks exposed to ground potential differences and EFT noise. IC Role / Device Role / Timing Role: Isolates TX and RX data paths between UART and transceiver IC, supporting 25 Mbps signaling for high-throughput Modbus RTU. Use Value: Delivers >25 kV/µs CMTI-preventing bit errors during 4 kV EFT bursts on long cable runs in noisy plant floors. |
Use Scenario: Isolating encoder quadrature signals and PWM gate-drive enable/disable commands in servo drives and inverters. IC Role / Device Role / Timing Role: Transfers position feedback (A/B/Z) and safety interlock signals across isolation barrier with sub-ns jitter stability. Use Value: Achieves 3 ns max pulse width distortion-preserving edge alignment for precise rotor position calculation in field-oriented control. |
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-B-IS | Capacitive isolation; 25 Mbps; 3.75 kVRMS rating; 5000 VRMS surge; no AEC-Q100 qualification | Industrial automation, not automotive; lacks 125°C continuous rating and automotive stress testing | Choose for cost-sensitive industrial designs where AEC-Q100 and 125°C operation are not required |
| ISO7721FDWR | Capacitive isolation; 100 Mbps; 5000 VRMS; AEC-Q100 Grade 1; 125°C rated; different pinout (SOIC-8 but channel assignment differs) | Higher-speed SPI, CAN FD gateway isolation; requires PCB layout revision due to non-identical pin mapping | Choose when >25 Mbps or enhanced surge immunity (5 kVRMS) is needed-and layout changes are acceptable |
Compared with SI8621ED-B-IS and ISO7721FDWR, the ADUM1201WSRZ offers guaranteed 3 ns pulse width distortion at 25 Mbps and automotive-qualified reliability at 125°C, while maintaining pin compatibility with legacy ADuM1201 designs-making it optimal for BMS and motor control upgrades where timing precision and qualification continuity are critical.
Availability
ADUM1201WSRZ is available at Aetrix Electronics and suitable for battery management systems, motor drive feedback interfaces, and isolated SPI data converter links requiring stable component supply across automotive production lifecycles.
Supply support for ADUM1201WSRZ 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 measurement and isolation.
The ADUM1201WSRZ belongs to the iCoupler® digital isolator product line, engineered specifically for automotive and industrial systems demanding robust galvanic isolation, low-power operation, and deterministic timing at extended temperature ranges.
FAQ
What is the maximum guaranteed data rate for ADUM1201WSRZ with ≤3 ns pulse width distortion?
The ADUM1201WSRZ is rated for 25 Mbps with ≤3 ns pulse width distortion (PWD) in CR grade configuration, as specified in Table 1 and Table 5 of the Rev. L datasheet. This performance is guaranteed over the full −40°C to +125°C operating range and applies to both 3 V and 5 V supply conditions. The device also supports 50 Mbps in certain test conditions, but 25 Mbps is the maximum rate with PWD compliance assured across temperature and voltage.
Does ADUM1201WSRZ support level translation between 3 V and 5 V domains?
Yes, ADUM1201WSRZ supports true bidirectional level translation: VDD1 and VDD2 may be independently set from 2.7 V to 5.5 V, enabling use cases such as a 3 V MCU communicating with a 5 V RS-485 transceiver. Electrical characteristics for mixed-supply operation (e.g., 3 V/5 V or 5 V/3 V) are fully specified in Table 3 of the datasheet, including supply current, propagation delay, and timing skew.
Is ADUM1201WSRZ pin-compatible with standard ADUM1201 variants?
Yes, ADUM1201WSRZ uses the same narrow-body SOIC-8 package and identical pinout as ADUM1201AR/BR/CR variants. Pin functions (VDD1, GND1, IA, IB, OA, OB, GND2, VDD2) and spacing match exactly-enabling drop-in replacement in existing layouts without PCB modification, provided thermal and qualification requirements align.
What safety certifications does ADUM1201WSRZ hold?
ADUM1201WSRZ is certified to UL 1577 (2500 VRMS for 1 minute), DIN EN IEC 60747-17 (VDE 0884-17) with VIORM = 560 VPEAK, IEC/EN/CSA 62368-1, IEC/CSA 61010-1, and CQC GB4943.1. It also meets AEC-Q100 Grade 1 for automotive use, covering temperature cycling, humidity, and mechanical shock testing per automotive reliability standards.
How does the refresh feature in ADUM1201WSRZ ensure DC correctness?
The ADUM1201WSRZ incorporates a patented internal refresh circuit that periodically samples the input state-even during static conditions or power transitions-and retransmits it across the isolation barrier. This guarantees correct output logic level during power-up, power-down, and prolonged input inactivity, eliminating output glitches or metastability issues common in capacitive or optocoupler-based isolators without such circuitry.
ADUM1201WSRZ 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:
- 1Mbps
- Propagation Delay tpLH / tpHL (Max):
- 150ns, 150ns
- Pulse Width Distortion (Max):
- 40ns
- Rise / Fall Time (Typ):
- 10ns, 10ns
- Voltage - Supply:
- 3V ~ 5.5V
- Grade:
- Automotive
- Qualification:
- -
- Operating Temperature:
- -40°C ~ 125°C
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
ADUM1201WSRZ FAQ
1.How can I place an order for ADUM1201WSRZ through Aetrix?
Please submit a Request for Quotation (RFQ) for ADUM1201WSRZ 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 ADUM1201WSRZ reliable?
The price and inventory of ADUM1201WSRZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADUM1201WSRZ is usually 5 days.
3.What payment methods are accepted for ADUM1201WSRZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADUM1201WSRZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADUM1201WSRZ?
ADUM1201WSRZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADUM1201WSRZ 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 ADUM1201WSRZ?
For technical support, including ADUM1201WSRZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADUM1201WSRZ requirements.
6.How does Aetrix verify that ADUM1201WSRZ is sourced from the original manufacturer or authorized distributors?
All ADUM1201WSRZ 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 ADUM1201WSRZ meets industry standards.
7.What is the process for return or replacement of ADUM1201WSRZ?
All ADUM1201WSRZ units undergo pre-shipment inspection (PSI). If there is an issue with ADUM1201WSRZ, 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 ADUM1201WSRZ part is unused and in its original packaging.
Return procedure for ADUM1201WSRZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ADUM1201WSRZ 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
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