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Home > Products > Isolators > Digital Isolators

Analog Devices Inc. ADUM3211TRZ-EP-RL7

Name: ADUM3211TRZ-EP-RL7
Brand: Analog Devices Inc.
SKU: ADUM3211TRZ-EP-RL7
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: ADUM3211TRZ-EP-RL7

Manufacturer:: Analog Devices Inc.

Category:: Digital Isolators

Package:: 8-SOIC (0.154", 3.90mm Width)

Datasheet:: ADUM3211TRZ-EP-RL7.pdf

Description:: DGTL ISO 2500VRMS 2CH GP 8SOIC

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Product details

Overview

ADUM3211TRZ-EP-RL7 from Analog Devices is a dual-channel, reinforced digital isolator using iCoupler® transformer-based technology, configured with one input on Side 1 and one output on Side 2 (1:1 channel directionality), rated for 25 Mbps data rate, −55°C to +125°C operation, and 2500 V rms isolation. It enables robust SPI, RS-485, and gate drive interface isolation in aerospace, defense, and industrial motor control systems.

For engineers reviewing the ADUM3211TRZ-EP-RL7 datasheet, ADUM3211TRZ-EP-RL7 pinout, ADUM3211TRZ-EP-RL7 application, or ADUM3211TRZ-EP-RL7 equivalent, key selection criteria include its 1:1 directional configuration, 560 V peak working voltage per VDE V 0884-10, 25 kV/µs common-mode transient immunity, and military-grade temperature range - all validated for enhanced system-level ESD reliability under IEC 61000-4-x.

Technical Context

The ADUM3211TRZ-EP-RL7 implements two independent galvanic isolation channels via monolithic air-core transformers, supporting bidirectional signal translation across an isolation barrier with precise timing control. Its architecture delivers 20–60 ns propagation delay (50% input-to-output) and ≤4 ns pulse width distortion at 25 Mbps, enabling deterministic timing in high-speed digital interfaces.

Unlike the ADUM3210-EP variant (2-input/0-output), the ADUM3211TRZ-EP-RL7 features asymmetric channel directionality: VIA and VIB are inputs on Side 1, while VOA and VOB are outputs on Side 2 - a fixed 1:1 mapping confirmed in Figures 2 and Table 21. This supports unidirectional signal flow across the barrier, such as isolated microcontroller-to-peripheral communication.

Key Specifications

Parameter	Value and Actual Design Meaning
Data Rate	25 Mbps maximum - supports high-speed SPI clocking and RS-485 transceiver control without timing bottlenecks.
Isolation Rating	2500 V rms for 1 minute (UL 1577); reinforced insulation with 560 V peak working voltage (DIN V VDE V 0884-10).
Operating Temperature	−55°C to +125°C - qualified for defense/aerospace applications per AQEC standard and military baseline control.
Supply Voltage Range	3.0 V to 5.5 V on both sides - enables mixed-voltage system interfacing (e.g., 3.3 V MCU to 5 V actuator).
Common-Mode Immunity	>25 kV/µs - maintains signal integrity in noisy motor drives and industrial power converters with fast switching transients.
Propagation Delay Skew	≤22 ns between channels - ensures synchronized timing across dual-signal paths like differential encoder feedback.
Power Consumption	1.5 mA/channel @ 1 Mbps (3.3 V), 5.2 mA/channel @ 25 Mbps (3.3 V) - balances speed and low-power operation in battery-backed or thermally constrained designs.

Pinout & Package

Narrow-body, RoHS-compliant 8-lead SOIC_N (JEDEC MS-012-AA, package option R-8), 5.00 mm × 4.00 mm footprint, 1.27 mm lead pitch, with creepage/clearance ≥4.0 mm between input and output sides.

Pin/Terminal	Circuit Role	Design Meaning
1 - VDD1	Input-side supply	3.0–5.5 V power for Side 1 logic inputs; decoupling required within 10 mm of pin.
2 - VOA	Output A	Isolated logic output driven by Side 1 input VIA; default low on power-up.
3 - VIB	Input B	Logic input referenced to GND1; accepts 0.3×VDD1 to 0.7×VDD1 thresholds.
4 - GND1	Input-side ground	Reference return for Side 1 signals; must be separated from GND2 by ≥4 mm PCB clearance.
5 - GND2	Output-side ground	Reference return for Side 2 outputs; forms isolation barrier boundary with GND1.
6 - VOB	Output B	Isolated logic output driven by Side 1 input VIB; default low on power-up.
7 - VIA	Input A	Logic input referenced to GND1; matches VIB in threshold and loading behavior.
8 - VDD2	Output-side supply	3.0–5.5 V power for Side 2 logic outputs; independent of VDD1 for voltage translation.

Key Features

Feature	Design Value
Enhanced ESD Reliability	System-level IEC 61000-4-x compliance achieved via layout and circuit hardening - reduces board-level protection component count.
Asymmetric Channel Mapping	1 input → 1 output per side (VIA→VOA, VIB→VOB) - eliminates ambiguity in signal direction for SPI SCLK/MOSI isolation.
High-Temperature Operation	Full functionality at +125°C ambient - enables placement near power stages without derating or heatsinking.
Low-Power High-Speed Trade-off	Dynamic current scaling: 0.10 mA/Mbps (input), 0.03 mA/Mbps (output) - extends runtime in 3.3 V portable test equipment.
Reinforced Insulation Certification	VDE V 0884-10 approval with VIORM = 560 V peak - satisfies safety-critical requirements in medical and industrial PLC designs.

Applications

Motor Drive Control Interface	SPI Isolation for Data Converters
Use Scenario: Isolating PWM gate drive signals and fault feedback between MCU and IGBT half-bridge in servo inverters. IC Role / Device Role / Timing Role: Dual-channel digital isolator providing independent, low-skew signal paths for high-side and low-side gate drivers with precise dead-time preservation. Use Value: Enables safe operation at 25 kV/µs common-mode transients while maintaining <22 ns inter-channel skew - critical for preventing shoot-through in 20 kHz+ switching topologies.	Use Scenario: Isolating SPI bus between FPGA host and isolated ADC/DAC in precision analog front-ends. IC Role / Device Role / Timing Role: Directional isolator translating SCLK, MOSI, and MISO across barrier with matched propagation delays to preserve setup/hold timing margins. Use Value: Supports 25 Mbps SPI clock rates with ≤4 ns pulse width distortion - allows full utilization of 16-bit ADC throughput without protocol overhead or retransmission.
RS-485 Transceiver Isolation	Digital Fieldbus Node Isolation
Use Scenario: Galvanically isolating RS-485 transceivers in factory automation networks exposed to ground potential differences. IC Role / Device Role / Timing Role: Bidirectional signal isolator for DE/RE control lines and differential data pair (A/B), implemented using two ADUM3211TRZ-EP-RL7 units. Use Value: Delivers 2500 V rms isolation and >25 kV/µs CMTI - prevents ground-loop-induced data corruption and protects master node from field-side surge events.	Use Scenario: Isolating Modbus RTU or CANopen nodes in distributed control systems with multiple power domains. IC Role / Device Role / Timing Role: Signal translator for UART TX/RX lines between controller and isolated fieldbus PHY, ensuring logic-level compatibility across 3.3 V/5 V domains. Use Value: Supports mixed-supply operation (3.3 V MCU ↔ 5 V transceiver) with no level-shifter required - simplifies BOM and reduces PCB area in space-constrained DIN-rail modules.

Motor Drive Control Interface

SPI Isolation for Data Converters

Use Scenario: Isolating PWM gate drive signals and fault feedback between MCU and IGBT half-bridge in servo inverters.

IC Role / Device Role / Timing Role: Dual-channel digital isolator providing independent, low-skew signal paths for high-side and low-side gate drivers with precise dead-time preservation.

Use Value: Enables safe operation at 25 kV/µs common-mode transients while maintaining <22 ns inter-channel skew - critical for preventing shoot-through in 20 kHz+ switching topologies.

Use Scenario: Isolating SPI bus between FPGA host and isolated ADC/DAC in precision analog front-ends.

IC Role / Device Role / Timing Role: Directional isolator translating SCLK, MOSI, and MISO across barrier with matched propagation delays to preserve setup/hold timing margins.

Use Value: Supports 25 Mbps SPI clock rates with ≤4 ns pulse width distortion - allows full utilization of 16-bit ADC throughput without protocol overhead or retransmission.

RS-485 Transceiver Isolation

Digital Fieldbus Node Isolation

Use Scenario: Galvanically isolating RS-485 transceivers in factory automation networks exposed to ground potential differences.

IC Role / Device Role / Timing Role: Bidirectional signal isolator for DE/RE control lines and differential data pair (A/B), implemented using two ADUM3211TRZ-EP-RL7 units.

Use Value: Delivers 2500 V rms isolation and >25 kV/µs CMTI - prevents ground-loop-induced data corruption and protects master node from field-side surge events.

Use Scenario: Isolating Modbus RTU or CANopen nodes in distributed control systems with multiple power domains.

IC Role / Device Role / Timing Role: Signal translator for UART TX/RX lines between controller and isolated fieldbus PHY, ensuring logic-level compatibility across 3.3 V/5 V domains.

Use Value: Supports mixed-supply operation (3.3 V MCU ↔ 5 V transceiver) with no level-shifter required - simplifies BOM and reduces PCB area in space-constrained DIN-rail modules.

Equivalent & Alternatives

The following parts are listed as comparable options for similar digital isolator applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
ADUM3210TRZ-EP-RL7	2-input/0-output configuration (both inputs on Side 1); identical package, rating, and timing specs.	Suited for isolated sensor input aggregation where both signals originate on same side (e.g., dual thermocouple digitizers).	Select ADUM3210TRZ-EP-RL7 only when both inputs reside on the primary (VDD1) side and no output mirroring is needed.
SI8621ED-IS	Capacitive isolation; 25 Mbps; 2.5–5.5 V supply; 5000 V rms UL rating; different pinout (SOIC-8 but non-compatible mapping).	Higher isolation voltage but lacks VDE V 0884-10 reinforced certification and military temp qualification.	Choose SI8621ED-IS only if UL 5000 V rms is mandatory and VDE certification is not required; verify PCB layout changes due to pin mismatch.

Compared with ADUM3210TRZ-EP-RL7, the ADUM3211TRZ-EP-RL7 provides explicit 1:1 input-output pairing ideal for point-to-point control links, whereas SI8621ED-IS offers higher isolation voltage but requires redesign for pin compatibility and lacks AQEC qualification for defense use.

Availability

ADUM3211TRZ-EP-RL7 is available at Aetrix Electronics and suitable for aerospace avionics, industrial motor drives, and medical diagnostic equipment requiring stable component supply across extended temperature and regulatory-compliant isolation performance.

Supply support for ADUM3211TRZ-EP-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, headquartered in Norwood, MA.

The ADuM3211-EP product line delivers enhanced-reliability digital isolators engineered for defense, aerospace, and harsh-environment industrial applications - emphasizing military temperature range, controlled manufacturing, and system-level ESD robustness.

FAQ

What is the default output state of ADUM3211TRZ-EP-RL7 during power-up?

The ADUM3211TRZ-EP-RL7 has a default output low characteristic on both VOA and VOB pins when either VDD1 or VDD2 is unpowered or during power sequencing. This behavior is explicitly defined in the General Description section and distinguishes it from the ADUM3200/ADUM3201 family, which defaults high. The ADUM3211TRZ-EP-RL7 maintains this safe-state behavior across its full −55°C to +125°C operating range.

Does ADUM3211TRZ-EP-RL7 support mixed-voltage operation between input and output sides?

Yes, ADUM3211TRZ-EP-RL7 supports independent 3.0–5.5 V supplies on VDD1 and VDD2, enabling true mixed-voltage operation - for example, 3.3 V MCU logic on Side 1 driving 5 V RS-485 transceivers on Side 2. Electrical Characteristics tables confirm full functionality at combinations including 5 V/3.3 V and 3.3 V/5 V, with verified timing and current specs across all configurations.

What safety certifications does ADUM3211TRZ-EP-RL7 hold?

ADUM3211TRZ-EP-RL7 carries pending approvals for UL 1577 (2500 V rms), CSA Component Acceptance Notice #5A, and VDE V 0884-10 (reinforced insulation, VIORM = 560 V peak). The device is marked with an asterisk (*) indicating VDE certification, and each unit undergoes 1050 V peak production testing per Method B1. These certifications are documented in Tables 14 and 16 of the Rev. A datasheet.

How does ADUM3211TRZ-EP-RL7 differ from ADUM3210TRZ-EP-RL7 in channel configuration?

ADUM3211TRZ-EP-RL7 implements a 1-input/1-output configuration per side (VIA→VOA, VIB→VOB), whereas ADUM3210TRZ-EP-RL7 is 2-input/0-output (VIA/VIB inputs only, no outputs on Side 1). This structural difference is confirmed in Figures 1–2 and Tables 20–21. Pin 2 is VOA (output) in ADUM3211TRZ-EP-RL7 but VIA (input) in ADUM3210TRZ-EP-RL7 - making them non-interchangeable without PCB redesign.

What is the maximum common-mode transient immunity (CMTI) specification for ADUM3211TRZ-EP-RL7?

ADUM3211TRZ-EP-RL7 guarantees >25 kV/µs common-mode transient immunity, with a typical value of 35 kV/µs, tested per IEC 61000-4-x methodology at VCM = 1000 V and transient magnitude = 800 V. This parameter is specified identically across all supply configurations (5 V, 3.3 V, and mixed) in Tables 3, 6, 9, and 12, and applies to both rising and falling edges of common-mode voltage transitions.

ADUM3211TRZ-EP-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:: 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-RL7 FAQ

1.How can I place an order for ADUM3211TRZ-EP-RL7 through Aetrix?

Please submit a Request for Quotation (RFQ) for ADUM3211TRZ-EP-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-EP-RL7 reliable?

The price and inventory of ADUM3211TRZ-EP-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-EP-RL7 is usually 5 days.

3.What payment methods are accepted for ADUM3211TRZ-EP-RL7?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADUM3211TRZ-EP-RL7 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for ADUM3211TRZ-EP-RL7?

ADUM3211TRZ-EP-RL7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your ADUM3211TRZ-EP-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-EP-RL7?

For technical support, including ADUM3211TRZ-EP-RL7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADUM3211TRZ-EP-RL7 requirements.

6.How does Aetrix verify that ADUM3211TRZ-EP-RL7 is sourced from the original manufacturer or authorized distributors?

All ADUM3211TRZ-EP-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-EP-RL7 meets industry standards.

7.What is the process for return or replacement of ADUM3211TRZ-EP-RL7?

All ADUM3211TRZ-EP-RL7 units undergo pre-shipment inspection (PSI). If there is an issue with ADUM3211TRZ-EP-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-EP-RL7 part is unused and in its original packaging.

Return procedure for ADUM3211TRZ-EP-RL7:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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