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Analog Devices Inc. ADUM3211TRZ-EP
- Part No.:
- ADUM3211TRZ-EP
- Manufacturer:
- Analog Devices Inc.
- Category:
- Digital Isolators
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
ADUM3211TRZ-EP.pdf
- Description:
- DGTL ISO 2500VRMS 2CH GP 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,093
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Product details
Overview
ADUM3211TRZ-EP from Analog Devices is a dual-channel, reinforced digital isolator based on iCoupler® transformer technology, featuring 1 input/1 output channel configuration, 25 Mbps data rate, 50 ns max propagation delay at 5 V, and operation across −55°C to +125°C for aerospace and defense systems requiring high-reliability signal isolation in gate drive or SPI interfaces.
For engineers reviewing the ADUM3211TRZ-EP datasheet, ADUM3211TRZ-EP pinout, ADUM3211TRZ-EP application, or ADUM3211TRZ-EP equivalent, key selection criteria include its default-low output logic behavior, mixed-voltage (3.3 V/5 V) side operation, IEC 61000-4-x enhanced ESD robustness, and VDE-certified 560 VPEAK reinforced insulation - all validated for military-grade thermal and radiation-hardened environments.
Technical Context
The ADUM3211TRZ-EP implements two independent unidirectional isolation channels using monolithic air-core transformers with integrated CMOS encoding/decoding circuitry, enabling precise timing control and immunity to magnetic interference. Its architecture supports asymmetric supply configurations (e.g., VDD1 = 3.3 V, VDD2 = 5 V), with dedicated input-side and output-side ground domains (GND1/GND2).
Unlike the ADUM3210-EP variant, ADUM3211TRZ-EP assigns Pin 2 as VOA (output A) and Pin 7 as VIA (input A), delivering opposite-directional signal flow per channel - critical for bidirectional bus isolation such as RS-485 transceivers where transmit and receive paths must be independently isolated.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Data Rate | 25 Mbps - supports high-speed digital interfaces including SPI clock lines and fast serial bus isolation without timing bottlenecks. |
| Propagation Delay | ≤50 ns at 5 V - ensures sub-50 ns latency between input transition and isolated output response, critical for real-time control loops. |
| Common-Mode Transient Immunity | >25 kV/µs - maintains signal integrity during rapid voltage transients typical in motor drives and industrial power electronics. |
| Isolation Rating | 2500 VRMS for 1 min (UL 1577); VIORM = 560 VPEAK (DIN V VDE V 0884-10) - certified reinforced insulation suitable for safety-critical barrier applications. |
| Supply Voltage Range | 3.0 V to 5.5 V per side - enables flexible interfacing with both legacy 5 V and modern low-voltage 3.3 V logic domains across the isolation barrier. |
| Operating Temperature | −55°C to +125°C - qualified for extended-range deployment in avionics, downhole tools, and space-constrained military electronics. |
| Power Consumption | 1.5 mA/channel @ 1 Mbps (3.3 V), 5.2 mA/channel @ 25 Mbps (3.3 V) - enables energy-efficient isolation in thermally constrained embedded systems. |
Pinout & Package
Narrow-body, RoHS-compliant 8-lead SOIC_N (package option R-8), 5.00 mm × 4.00 mm footprint, 1.27 mm lead pitch, with creepage and clearance ≥4.0 mm per DIN VDE 0884-10.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - VDD1 | Input-side supply rail | 3.0–5.5 V power for primary-side logic interface; powers encoder and input buffer circuits. |
| 2 - VOA | Output A signal terminal | Isolated logic output driven by input A (VIA on Pin 7); default-low state when unpowered. |
| 3 - VIB | Input B signal terminal | Primary-side logic input channel B; referenced to GND1 and compatible with CMOS/LVTTL levels. |
| 4 - GND1 | Input-side ground reference | Return path for VDD1 and input signals; galvanically separated from GND2 to maintain isolation barrier integrity. |
| 5 - GND2 | Output-side ground reference | Return path for VDD2 and output signals; electrically isolated from GND1 by >1012 Ω resistance and <1.0 pF capacitance. |
| 6 - VOB | Output B signal terminal | Isolated logic output driven by input B (VIB on Pin 3); complements VOA for dual-channel bidirectional isolation. |
| 7 - VIA | Input A signal terminal | Primary-side logic input channel A; paired with VOA (Pin 2) to form Channel A isolation path. |
| 8 - VDD2 | Output-side supply rail | 3.0–5.5 V power for secondary-side logic interface; powers decoder and output driver circuits. |
Key Features
| Feature | Design Value |
|---|---|
| Enhanced system-level ESD reliability | Validated per IEC 61000-4-2, -4-4, and -4-5 - reduces board-level protection component count and improves field failure resilience. |
| Default-low output logic | Guarantees known safe state (logic low) on VOA/VOB during power-up, brownout, or side-unpowered conditions - essential for fail-safe gate drivers. |
| VDE-certified reinforced insulation | DIN V VDE V 0884-10 (2006-12) compliance with VIORM = 560 VPEAK - satisfies functional safety requirements for medical, industrial, and transportation equipment. |
| High CMTI immunity | >25 kV/µs common-mode transient rejection - prevents false triggering in noisy environments like inverters, UPS systems, and PLC I/O modules. |
| Military-grade temperature range | −55°C to +125°C operation with controlled manufacturing baseline and AQEC-aligned qualification - meets MIL-PRF-38535 Class K requirements. |
Applications
| SPI Interface Isolation | RS-485 Transceiver Isolation |
|---|---|
Use Scenario: Isolating SPI clock, MOSI, MISO, and CS lines between MCU and isolated ADC/DAC in high-noise industrial sensor nodes. IC Role / Device Role / Timing Role: Dual-channel unidirectional isolator providing independent isolation for SCLK/MOSI (Channel A) and MISO/CS (Channel B) with matched propagation delay ≤50 ns. Use Value: Eliminates ground loop noise coupling while preserving full 25 Mbps SPI throughput and maintaining precise timing alignment between master and slave devices. |
Use Scenario: Galvanic isolation of DE/RE control and differential data lines in half-duplex RS-485 communication for factory automation networks. IC Role / Device Role / Timing Role: Bidirectional channel pairing (VIA→VOA and VIB→VOB) enabling independent enable/disable and data path isolation with <4 ns pulse width distortion. Use Value: Prevents bus contention and fault propagation across isolation barriers while supporting 25 Mbps line rates and meeting IEC 61000-4-5 surge immunity standards. |
| Gate Drive Interface | Digital Field Bus Isolation |
Use Scenario: Isolating PWM signals from controller to high-side/low-side IGBT or SiC MOSFET gate drivers in motor inverters and EV traction systems. IC Role / Device Role / Timing Role: Low-propagation-delay, default-low isolator ensuring clean turn-off of power switches during controller reset or supply loss. Use Value: Enables safe, predictable power stage shutdown with <50 ns channel-to-channel skew - critical for preventing shoot-through in bridge topologies. |
Use Scenario: Signal isolation in PROFIBUS DP, CANopen, or DeviceNet node interfaces where microcontroller and physical layer ICs operate at different ground potentials. IC Role / Device Role / Timing Role: Dual-channel isolator supporting separate TX and RX path isolation with independent supply domains (VDD1/VDD2) for voltage translation. Use Value: Maintains protocol timing integrity at up to 12 Mbps (PROFIBUS) while enabling 3.3 V MCU to interface with 5 V transceivers without level shifters. |
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-EP | 2-input/0-output configuration (both inputs on VDD1 side); default-low output; identical package, timing, and isolation specs. | Better suited for isolated input monitoring (e.g., fault/status signals) rather than bidirectional bus isolation. | Select ADUM3210TRZ-EP when both signals originate from the same side and require independent isolation to a common output domain. |
| SI8621ED-IS | Capacitive isolation; 25 Mbps; 50 ns max propagation delay; UL/VDE-certified; operates from 2.7–5.5 V; lower quiescent current (1.2 mA/ch @ 1 Mbps). | Lacks military temperature rating (−40°C to +125°C only); no AQEC qualification or enhanced ESD test validation. | Choose SI8621ED-IS for commercial/industrial applications where cost and power efficiency outweigh extended temperature and defense-grade reliability needs. |
Compared with ADUM3211TRZ-EP, ADUM3210TRZ-EP provides identical isolation performance but with input-only topology, while SI8621ED-IS offers lower power and smaller footprint but omits military-grade environmental qualification and system-level ESD enhancements.
Availability
ADUM3211TRZ-EP is available at Aetrix Electronics and suitable for aerospace avionics, defense subsystems, and industrial motor control applications requiring stable component supply, long-term lifecycle support, and traceable sourcing for DO-254/DO-178 compliance programs.
Supply support for ADUM3211TRZ-EP 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 precision instrumentation, communications, and industrial markets since 1965.
The ADuM3211TRZ-EP belongs to the ADuM32xx-EP enhanced product line, engineered specifically for defense, aerospace, and high-reliability applications demanding extended temperature operation, controlled manufacturing baselines, and rigorous system-level ESD/surge survivability.
FAQ
What is the default output state of ADUM3211TRZ-EP during power-up or supply loss?
The ADUM3211TRZ-EP features a default-low output characteristic: when either VDD1 or VDD2 is unpowered, VOA and VOB assert logic low within 1 µs of supply restoration. This fail-safe behavior ensures predictable gate driver shutdown or bus idle states, directly supporting IEC 61508 functional safety requirements in critical systems using ADUM3211TRZ-EP.
Does ADUM3211TRZ-EP support mixed-voltage operation across the isolation barrier?
Yes, ADUM3211TRZ-EP supports independent 3.0–5.5 V supplies on each side - including VDD1 = 3.3 V / VDD2 = 5 V or vice versa - enabling seamless voltage translation between low-power microcontrollers and higher-voltage peripheral ICs without external level shifters, as confirmed in Tables 7–12 of the ADUM3211TRZ-EP datasheet.
What safety certifications apply to ADUM3211TRZ-EP?
ADUM3211TRZ-EP carries pending UL 1577 (2500 VRMS, 1 min), CSA Component Acceptance Notice #5A, and VDE certification per DIN V VDE V 0884-10:2006-12 with VIORM = 560 VPEAK, establishing it as a reinforced insulation device suitable for medical, industrial, and transportation safety-critical designs requiring ADUM3211TRZ-EP's certified barrier integrity.
How does ADUM3211TRZ-EP differ from ADUM3210TRZ-EP in pin configuration and signal direction?
ADUM3211TRZ-EP uses Pin 2 as VOA (output A) and Pin 7 as VIA (input A), enabling true bidirectional channel pairing (VIA→VOA and VIB→VOB). In contrast, ADUM3210TRZ-EP assigns Pins 2 and 3 as VIA/VIB (both inputs), with Pins 7 and 6 as VOA/VOB (both outputs), making ADUM3211TRZ-EP the correct choice for isolated RS-485 or half-duplex bus applications requiring independent input/output assignment per channel.
What is the maximum common-mode transient immunity (CMTI) specification for ADUM3211TRZ-EP?
ADUM3211TRZ-EP guarantees >25 kV/µs common-mode transient immunity (CMTI) under test conditions of VCM = 1000 V with 800 V transient magnitude, verified across −55°C to +125°C. This high CMTI value ensures reliable operation in high-noise environments such as motor drives and switch-mode power supplies where rapid ground potential shifts occur, a key performance metric confirmed in Tables 1–12 for ADUM3211TRZ-EP.
ADUM3211TRZ-EP Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- iCoupler®
- 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:
- -
- Qualification:
- -
- Operating Temperature:
- -55°C ~ 125°C
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
ADUM3211TRZ-EP FAQ
1.How can I place an order for ADUM3211TRZ-EP through Aetrix?
Please submit a Request for Quotation (RFQ) for ADUM3211TRZ-EP 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-EP reliable?
The price and inventory of ADUM3211TRZ-EP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADUM3211TRZ-EP is usually 5 days.
3.What payment methods are accepted for ADUM3211TRZ-EP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADUM3211TRZ-EP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADUM3211TRZ-EP?
ADUM3211TRZ-EP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADUM3211TRZ-EP 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-EP?
For technical support, including ADUM3211TRZ-EP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADUM3211TRZ-EP requirements.
6.How does Aetrix verify that ADUM3211TRZ-EP is sourced from the original manufacturer or authorized distributors?
All ADUM3211TRZ-EP 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-EP meets industry standards.
7.What is the process for return or replacement of ADUM3211TRZ-EP?
All ADUM3211TRZ-EP units undergo pre-shipment inspection (PSI). If there is an issue with ADUM3211TRZ-EP, 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-EP part is unused and in its original packaging.
Return procedure for ADUM3211TRZ-EP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ADUM3211TRZ-EP Tags
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