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Analog Devices Inc. ADUM3211TRZ-RL7
- Part No.:
- ADUM3211TRZ-RL7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Digital Isolators
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
ADUM3211TRZ-RL7.pdf
- Description:
- DGTL ISO 2500VRMS 2CH GP 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:757
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Product details
Overview
ADuM3211TRZ-RL7 from Analog Devices is a dual-channel digital isolator based on iCoupler® transformer technology, providing reinforced galvanic isolation between two independent signal paths. It operates at up to 25 Mbps with 3.3 V or 5 V supplies on either side, features default-low output logic, and delivers 25 kV/µs common-mode transient immunity - enabling robust SPI and RS-485 interface isolation in motor drives and battery monitoring systems.
For engineers reviewing the ADuM3211TRZ-RL7 datasheet, ADuM3211TRZ-RL7 pinout, ADuM3211TRZ-RL7 application, or ADuM3211TRZ-RL7 equivalent, key selection criteria include its 25 Mbps data rate, 125°C automotive-grade operation, 2500 VRMS isolation rating, and precise channel-to-channel matching (≤3 ns skew), critical for timing-sensitive industrial communications and high-reliability power conversion control.
Technical Context
The ADuM3211TRZ-RL7 implements monolithic air-core transformers per channel to achieve galvanic isolation without optocoupler limitations. Its CMOS-compatible inputs and outputs support bidirectional signal transmission across the barrier, with independent supply domains (VDD1/VDD2) enabling 3.3 V/5 V level translation.
It uses refresh circuitry to maintain DC correctness during idle periods and incorporates layout-optimized internal shielding to sustain >25 kV/µs common-mode transients. The device meets DIN EN IEC 60747-17 (VDE 0884-17) reinforced insulation requirements with VIORM = 560 VPEAK and UL 1577 certification at 2500 VRMS for 1 minute.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Data Rate | DC to 25 Mbps (NRZ) - supports high-speed SPI clocking and real-time serial bus isolation without oversampling. |
| Isolation Rating | 2500 VRMS (1 min), VIORM = 560 VPEAK - certified for reinforced insulation per VDE 0884-17 and UL 1577, suitable for safety-critical system barriers. |
| Propagation Delay Skew | ≤3 ns (codirectional), ≤20 ns (opposing) - ensures deterministic timing alignment between channels in feedback loops and synchronous interfaces. |
| Supply Voltage Range | 3.0–3.6 V or 4.5–5.5 V per side - enables mixed-voltage system interfacing (e.g., 3.3 V MCU to 5 V peripheral) without external level shifters. |
| Common-Mode Transient Immunity | >25 kV/µs - maintains signal integrity in noisy motor drive and inverter environments where fast dV/dt events occur across isolation boundaries. |
| Operating Temperature | −40°C to +125°C - qualified for automotive under-hood and industrial power electronics applications requiring extended thermal stability. |
| Power Consumption | 1.5 mA/channel @ 2 Mbps (3.3 V), 7.5 mA/channel @ 25 Mbps (5 V) - enables low-power isolated communication in battery-backed or thermally constrained designs. |
Pinout & Package
Narrow-body, RoHS-compliant 8-lead SOIC package (SOIC_N), 5.3 mm × 6.2 mm footprint, with creepage/clearance ≥4.0 mm per regulatory standards.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 (VDD1) | Input-side power supply | Supplies power to Channel A input circuitry and internal transmitter; accepts 3.3 V or 5 V. |
| Pin 2 (GND1) | Input-side ground reference | Return path for VDD1 domain; must be separated from GND2 by isolation barrier. |
| Pin 3 (A) | Channel A input | CMOS-compatible digital input driving isolated transformer primary on side 1. |
| Pin 4 (B) | Channel B input | CMOS-compatible digital input driving isolated transformer primary on side 1. |
| Pin 5 (GND2) | Output-side ground reference | Return path for VDD2 domain; galvanically isolated from GND1. |
| Pin 6 (VDD2) | Output-side power supply | Supplies power to Channel A/B output circuitry and internal receiver; accepts 3.3 V or 5 V independently of VDD1. |
| Pin 7 (Y) | Channel A output | CMOS-compatible digital output referenced to VDD2/GND2; default-low state when input inactive. |
| Pin 8 (Z) | Channel B output | CMOS-compatible digital output referenced to VDD2/GND2; default-low state when input inactive. |
Key Features
| Feature | Design Value |
|---|---|
| Enhanced ESD reliability | System-level IEC 61000-4-x compliance achieved via internal layout hardening - reduces board-level ESD protection component count. |
| Default-low output logic | Ensures safe, known state on power-up or signal loss - critical for gate driver enable/disable control in motor inverters. |
| Pulse width distortion | ≤3 ns (5 V operation) - preserves duty cycle fidelity in PWM-based isolated feedback paths. |
| Channel-to-channel matching | ≤3 ns propagation delay skew - enables synchronized sampling across dual ADC or DAC interfaces. |
| Low dynamic power scaling | 0.03–0.05 mA/Mbps output current - minimizes heat generation in densely packed isolated signal chains. |
Applications
| SPI Interface Isolation | RS-485 Transceiver Isolation |
|---|---|
|
Use Scenario: Isolating SPI signals between a microcontroller and isolated ADC/DAC in a high-voltage power supply monitor. IC Role / Device Role / Timing Role: Dual-channel isolator transmitting SCLK/MOSI and receiving MISO with matched propagation delay to preserve setup/hold timing. Use Value: Eliminates ground loop noise and enables ±1 kV common-mode voltage tolerance while maintaining 25 Mbps throughput for fast data acquisition. |
Use Scenario: Galvanically isolating RS-485 transceiver control lines (DE/RE) and data lines (A/B) in industrial fieldbus nodes. IC Role / Device Role / Timing Role: Provides independent isolation for transmit enable and differential data paths, preserving signal edge integrity at 20 Mbps. Use Value: Prevents bus faults from propagating to controller side and sustains >25 kV/µs transients during lightning-induced surges on long cable runs. |
| Motor Drive Gate Driver Interface | Battery Management System (BMS) Communication |
|
Use Scenario: Isolating PWM signals from a controller to high-side/low-side gate drivers in an EV traction inverter. IC Role / Device Role / Timing Role: Delivers matched, low-skew isolated PWM edges to upper/lower IGBT gate drivers with <3 ns inter-channel mismatch. Use Value: Prevents shoot-through by ensuring precise dead-time control and withstands 125°C junction temperature in compact inverter modules. |
Use Scenario: Isolating UART or SPI communication between a main BMS controller and cell monitoring ICs across 400 V battery stacks. IC Role / Device Role / Timing Role: Enables reliable, low-latency telemetry transfer while blocking high-voltage fault currents between battery modules. Use Value: Supports functional safety requirements (IEC 62368-1) and provides 2500 VRMS isolation barrier compliant with automotive ASIL-B architectures. |
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 |
|---|---|---|---|
| ADuM3210TRZ-RL7 | Default-high output logic vs. ADuM3211TRZ-RL7's default-low; otherwise identical specs and pinout. | Requires inverted logic handling in enable/control paths where active-low assertion is mandatory. | Select ADuM3210TRZ-RL7 only when system design requires default-high output state on power-up or fault. |
| SI8621ED-B-IS | Capacitive isolation; 25 Mbps rated; 5000 VRMS isolation; different pinout (SOIC-8 but non-interchangeable). | Lacks VDE 0884-17 reinforced certification; higher CMTI (35 kV/µs) but no automotive qualification. | Consider SI8621ED-B-IS for cost-sensitive industrial applications where 5000 VRMS and higher CMTI outweigh automotive compliance needs. |
Compared with ADuM3210TRZ-RL7, the ADuM3211TRZ-RL7 offers safer default-low behavior for fail-safe gate driver control, while SI8621ED-B-IS trades automotive qualification for higher isolation voltage and marginally better transient immunity - making ADuM3211TRZ-RL7 optimal for ISO 26262-aligned BMS and inverter designs.
Availability
ADuM3211TRZ-RL7 is available at Aetrix Electronics and suitable for SPI isolation, RS-485 transceiver protection, and motor drive gate driver interfaces requiring stable component supply, automotive-grade reliability, and certified reinforced insulation.
Supply support for ADuM3211TRZ-RL7 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 ADuM3211TRZ-RL7 belongs to the iCoupler® digital isolator product line, engineered specifically for replacing optocouplers in high-reliability, high-speed, and thermally demanding applications - emphasizing low power, precise timing, and system-level ESD robustness.
FAQ
What is the maximum data rate supported by the ADuM3211TRZ-RL7?
The ADuM3211TRZ-RL7 supports a maximum data rate of 25 Mbps in NRZ format, verified across all operating conditions including 3.3 V/5 V mixed-supply configurations and up to +125°C ambient temperature. This performance is maintained with pulse width distortion ≤3 ns and propagation delay skew ≤3 ns, making it suitable for high-speed SPI clocking and real-time serial protocols.
Does the ADuM3211TRZ-RL7 support level translation between 3.3 V and 5 V domains?
Yes, the ADuM3211TRZ-RL7 supports true bidirectional level translation: VDD1 and VDD2 can operate independently at either 3.3 V (3.0–3.6 V) or 5 V (4.5–5.5 V). This allows direct interfacing between a 3.3 V microcontroller and a 5 V RS-485 transceiver without external level-shifting components, preserving signal integrity and timing accuracy.
What safety certifications does the ADuM3211TRZ-RL7 hold?
The ADuM3211TRZ-RL7 is certified to UL 1577 (2500 VRMS, 1 minute), DIN EN IEC 60747-17 (VDE 0884-17) for reinforced insulation (VIORM = 560 VPEAK), IEC/EN/CSA 62368-1, and IEC/CSA 61010-1. These approvals validate its use in safety-critical applications including automotive battery monitors and industrial power converters.
How does the default-low output behavior of the ADuM3211TRZ-RL7 benefit system design?
The ADuM3211TRZ-RL7 asserts a logic-low state on its Y and Z outputs during power-up, power-down, or input signal loss - providing fail-safe behavior in gate driver enable paths and shutdown circuits. This eliminates need for external pull-down resistors and prevents unintended activation of power stages in motor drives and SMPS controllers.
Is the ADuM3211TRZ-RL7 pin-compatible with other devices in the ADuM321x family?
Yes, the ADuM3211TRZ-RL7 shares identical 8-lead SOIC packaging and pinout with ADuM3210TRZ-RL7, ADuM3211WTRZ-RL7, and ADuM3210WTRZ-RL7. All variants maintain the same VDD1/GND1/A/B and VDD2/GND2/Y/Z terminal mapping, enabling drop-in replacement where default output logic or automotive qualification aligns with system requirements.
ADUM3211TRZ-RL7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- iCoupler®
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- 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:
- 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 ~ 125°C
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
ADUM3211TRZ-RL7 FAQ
1.How can I place an order for ADUM3211TRZ-RL7 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADUM3211TRZ-RL7 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 ADUM3211TRZ-RL7 reliable?
The price and inventory of ADUM3211TRZ-RL7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADUM3211TRZ-RL7 is usually 5 days.
3.What payment methods are accepted for ADUM3211TRZ-RL7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADUM3211TRZ-RL7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADUM3211TRZ-RL7?
ADUM3211TRZ-RL7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADUM3211TRZ-RL7 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 ADUM3211TRZ-RL7?
For technical support, including ADUM3211TRZ-RL7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADUM3211TRZ-RL7 requirements.
6.How does Aetrix verify that ADUM3211TRZ-RL7 is sourced from the original manufacturer or authorized distributors?
All ADUM3211TRZ-RL7 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 ADUM3211TRZ-RL7 meets industry standards.
7.What is the process for return or replacement of ADUM3211TRZ-RL7?
All ADUM3211TRZ-RL7 units undergo pre-shipment inspection (PSI). If there is an issue with ADUM3211TRZ-RL7, 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 ADUM3211TRZ-RL7 part is unused and in its original packaging.
Return procedure for ADUM3211TRZ-RL7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ADUM3211TRZ-RL7 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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