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Home > Products > Isolators > Digital Isolators

Analog Devices Inc. ADUM231E1BRIZ

Name: ADUM231E1BRIZ
Brand: Analog Devices Inc.
SKU: ADUM231E1BRIZ
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: ADUM231E1BRIZ

Manufacturer:: Analog Devices Inc.

Category:: Digital Isolators

Package:: 16-SOIC (0.295", 7.50mm Width)

Datasheet:: ADUM231E1BRIZ.pdf

Description:: DGTL ISO 5000VRMS 3CH GP 16SOIC

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Product details

Overview

ADUM231E1BRIZ from Analog Devices is a triple-channel, 5.0 kV_RMS digital isolator using iCoupler® technology, designed for high-noise industrial interfaces. It delivers 150 Mbps data rate, 13 ns max propagation delay at 5 V, and 100 kV/µs common-mode transient immunity. Its fail-safe high output state and 1.8 V to 5 V level translation support SPI isolation in motor drives and PLC I/O modules.

For engineers reviewing the ADUM231E1BRIZ datasheet, ADUM231E1BRIZ pinout, ADUM231E1BRIZ application, or ADUM231E1BRIZ equivalent, key selection criteria include reinforced insulation rating (849 V_PEAK), SOIC-16 wide-body package with 8.3 mm creepage, channel matching ≤3.0 ns, and operation up to +125°C ambient.

Technical Context

The ADUM231E1BRIZ implements three independent unidirectional isolation channels using monolithic air-core transformers, enabling dc-correct output behavior without input transitions. Its architecture supports asymmetric supply operation (e.g., 1.8 V on side 1, 5 V on side 2) and includes integrated undervoltage lockout (1.5 V/1.6 V thresholds) on both sides.

It features two enable inputs (VE1, VE2) and one disable input (DISABLE1), allowing flexible power sequencing and channel gating. The device meets DIN EN IEC 60747-17 (VDE 0884-17) for reinforced insulation and carries dual MOPP certification per IEC 60601-1 (237.5 V_RMS).

Key Specifications

Parameter	Value and Actual Design Meaning
Isolation Rating	5.0 kV_RMS for 1 minute - enables safety-critical barrier separation in medical and industrial equipment
Data Rate	150 Mbps maximum - supports high-speed SPI clocking up to 75 MHz with margin
Propagation Delay	13 ns max at 5 V - ensures tight timing control in real-time control loops
Common-Mode Immunity	100 kV/µs - maintains signal integrity in noisy motor drive and inverter environments
Supply Range	1.7 V to 5.5 V per side - allows direct interfacing with low-voltage MCUs and legacy 5 V logic
Fail-Safe Output	High-state default on power loss - prevents undefined states in safety-critical outputs
Operating Temperature	−40°C to +125°C - qualified for under-hood automotive and industrial edge applications

Pinout & Package

ADUM231E1BRIZ uses a 16-lead, RoHS-compliant, wide-body SOIC package (RW-16) with 8.3 mm creepage and clearance, rated for reinforced insulation per VDE 0884-17.

Pin/Terminal	Circuit Role	Design Meaning
1, 2, 3, 4, 5, 6, 7, 8	Side 1 inputs/outputs/controls	Pins 1–3: Channel A/B/C inputs; Pin 4: DISABLE1; Pins 5–6: VE1/VE2 enables; Pins 7–8: VDD1/GND1
9, 10, 11, 12, 13, 14, 15, 16	Side 2 outputs/inputs/controls	Pins 9–11: Channel A/B/C outputs; Pin 12: not connected; Pins 13–14: VDD2/GND2; Pins 15–16: reserved

Key Features

Feature	Design Value
Triple unidirectional channels	Independent A/B/C signal paths eliminate crosstalk and enable asymmetric routing in SPI bus isolation
iCoupler® transformer isolation	No LED aging or CTR degradation - guarantees >50-year insulation lifetime per IEC 60747-17
DC-correct output behavior	Maintains last valid logic state during input inactivity - eliminates need for refresh clocks or watchdog timers
Level translation capability	1.8 V logic on side 1 ↔ 5 V logic on side 2 - bridges modern low-power microcontrollers to legacy peripherals
Reinforced insulation certification	VDE 0884-17, UL 1577, IEC 60601-1 (2 MOPP) - satisfies regulatory requirements for patient-connected medical devices

Applications

SPI Isolation in Motor Drives	PLC Digital I/O Module
Use Scenario: Isolating SPI communication between MCU and gate driver ICs in servo inverters subject to high dv/dt noise. IC Role / Device Role / Timing Role: Provides galvanic separation for SCLK, MOSI, and MISO lines while preserving sub-15 ns timing margins. Use Value: Prevents ground loop-induced latch-up and ensures reliable command transmission during 100 kV/µs transients.	Use Scenario: Isolating digital input/output signals between field-side sensors/actuators and controller backplane in harsh factory environments. IC Role / Device Role / Timing Role: Acts as a robust, low-latency interface for 24 V DC discrete I/O with fail-safe high default. Use Value: Eliminates need for external pull-ups and reduces system-level EMI filtering complexity.
Medical Patient Monitoring Interface	Industrial Ethernet Gateway
Use Scenario: Isolating UART or SPI links between isolated analog front-end (AFE) and host processor in Class II medical devices. IC Role / Device Role / Timing Role: Delivers 2 MOPP reinforced insulation per IEC 60601-1 while supporting 100+ Mbps diagnostic data streaming. Use Value: Meets stringent creepage (8.3 mm), VIORM (849 V_PEAK), and thermal derating requirements without external components.	Use Scenario: Isolating management interfaces (e.g., MDIO, I2C) between Ethernet PHY and host SoC in DIN-rail mounted gateways. IC Role / Device Role / Timing Role: Enables safe hot-swap of isolated network modules by maintaining defined output state during power sequencing. Use Value: Fail-safe high output prevents unintended PHY reset or configuration loss during brown-out conditions.

SPI Isolation in Motor Drives

PLC Digital I/O Module

Use Scenario: Isolating SPI communication between MCU and gate driver ICs in servo inverters subject to high dv/dt noise.

IC Role / Device Role / Timing Role: Provides galvanic separation for SCLK, MOSI, and MISO lines while preserving sub-15 ns timing margins.

Use Value: Prevents ground loop-induced latch-up and ensures reliable command transmission during 100 kV/µs transients.

Use Scenario: Isolating digital input/output signals between field-side sensors/actuators and controller backplane in harsh factory environments.

IC Role / Device Role / Timing Role: Acts as a robust, low-latency interface for 24 V DC discrete I/O with fail-safe high default.

Use Value: Eliminates need for external pull-ups and reduces system-level EMI filtering complexity.

Medical Patient Monitoring Interface

Industrial Ethernet Gateway

Use Scenario: Isolating UART or SPI links between isolated analog front-end (AFE) and host processor in Class II medical devices.

IC Role / Device Role / Timing Role: Delivers 2 MOPP reinforced insulation per IEC 60601-1 while supporting 100+ Mbps diagnostic data streaming.

Use Value: Meets stringent creepage (8.3 mm), VIORM (849 V_PEAK), and thermal derating requirements without external components.

Use Scenario: Isolating management interfaces (e.g., MDIO, I2C) between Ethernet PHY and host SoC in DIN-rail mounted gateways.

IC Role / Device Role / Timing Role: Enables safe hot-swap of isolated network modules by maintaining defined output state during power sequencing.

Use Value: Fail-safe high output prevents unintended PHY reset or configuration loss during brown-out conditions.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
SI8631BB-B-IS	3-channel, 5 kV_RMS, 150 Mbps, but uses capacitive isolation and lacks VDE 0884-17 certification	Not certified for 2 MOPP medical use; lower CMTI (75 kV/µs)	Prefer ADUM231E1BRIZ where reinforced insulation and 100 kV/µs CMTI are mandatory
ISO6731RWR	3-channel, 5 kV_RMS, 50 Mbps max - significantly lower speed and no 1.8 V operation	Insufficient for high-speed SPI; limited to 3.3 V/5 V only	Choose ADUM231E1BRIZ when 150 Mbps, 1.8 V compatibility, and tight channel matching (<3 ns) are required

Compared with SI8631BB-B-IS and ISO6731RWR, ADUM231E1BRIZ uniquely combines VDE 0884-17 certification, 100 kV/µs CMTI, 1.8 V operation, and sub-3 ns channel matching - making it optimal for high-reliability industrial and medical isolation where timing integrity and safety compliance are non-negotiable.

Availability

ADUM231E1BRIZ is available at Aetrix Electronics and suitable for industrial motor control, medical diagnostics, PLC I/O, and industrial Ethernet gateway designs requiring stable component supply, long-term lifecycle assurance, and full regulatory documentation traceability.

Supply support for ADUM231E1BRIZ 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, industrial automation, and healthcare markets.

The ADuM231E1BRIZ belongs to the ADuM23x family of triple-channel digital isolators engineered for high-noise, safety-critical applications demanding reinforced insulation, wide temperature range, and guaranteed timing performance.

FAQ

What is the maximum data rate supported by ADUM231E1BRIZ?

ADUM231E1BRIZ supports a guaranteed maximum data rate of 150 Mbps across all three channels. This specification holds over the full operating temperature range (−40°C to +125°C) and supply voltage range (1.7 V to 5.5 V). Higher rates may be achievable in specific conditions but are not production-guaranteed.

Does ADUM231E1BRIZ support level translation between different logic voltages?

Yes, ADUM231E1BRIZ supports bidirectional level translation: side 1 can operate from 1.7 V to 5.5 V independently of side 2, which also operates from 1.7 V to 5.5 V. This enables direct interfacing between 1.8 V microcontrollers and 5 V peripherals without external level shifters.

What safety certifications apply to ADUM231E1BRIZ?

ADUM231E1BRIZ is certified to UL 1577 (5000 V_RMS), DIN EN IEC 60747-17 (VDE 0884-17), IEC/EN/CSA 62368-1, IEC/CSA 60601-1 (2 MOPP), and IEC/CSA 61010-1. Its VIORM is 849 V_PEAK, and it achieves 8.3 mm creepage in the RW-16 SOIC package.

How does the fail-safe output behavior work on ADUM231E1BRIZ?

ADUM231E1BRIZ is configured as a fail-safe high device: when VDD1 or VDD2 is absent or falls below UVLO threshold (1.5 V), all three output channels (pins 9–11) transition to and hold a logic high state. This prevents undefined states in safety-critical control paths.

What is the channel-to-channel matching specification for ADUM231E1BRIZ?

ADUM231E1BRIZ guarantees ≤3.0 ns maximum channel matching (tPSKCD) for codirectional signals and ≤3.0 ns for opposing-direction signals, measured across all three channels at 5 V, 25°C. This tight matching ensures deterministic timing in multi-line protocols like SPI.

ADUM231E1BRIZ Specifications

Product attributes: Attribute value

Manufacturer:: Analog Devices Inc.

Series:: iCoupler®

Package/Case:: 16-SOIC (0.295", 7.50mm Width)

Packaging:: Tube

Product Status:: Active

Technology:: Magnetic Coupling

Type:: General Purpose

Isolated Power:: No

Number of Channels:: 3

Inputs - Side 1/Side 2:: 2/1

Channel Type:: Unidirectional

Voltage - Isolation:: 5000Vrms

Common Mode Transient Immunity (Min):: 75kV/µs

Data Rate:: 150Mbps

Propagation Delay tpLH / tpHL (Max):: 13ns, 13ns

Pulse Width Distortion (Max):: 3ns

Rise / Fall Time (Typ):: 2.5ns, 2.5ns

Voltage - Supply:: 1.7V ~ 5.5V

Grade:: -

Qualification:: -

Operating Temperature:: -40°C ~ 125°C

Mounting Type:: Surface Mount

Supplier Device Package:: 16-SOIC

ADUM231E1BRIZ FAQ

1.How can I place an order for ADUM231E1BRIZ through Aetrix?

Please submit a Request for Quotation (RFQ) for ADUM231E1BRIZ 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 ADUM231E1BRIZ reliable?

The price and inventory of ADUM231E1BRIZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADUM231E1BRIZ is usually 5 days.

3.What payment methods are accepted for ADUM231E1BRIZ?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADUM231E1BRIZ transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for ADUM231E1BRIZ?

ADUM231E1BRIZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your ADUM231E1BRIZ 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 ADUM231E1BRIZ?

For technical support, including ADUM231E1BRIZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADUM231E1BRIZ requirements.

6.How does Aetrix verify that ADUM231E1BRIZ is sourced from the original manufacturer or authorized distributors?

All ADUM231E1BRIZ 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 ADUM231E1BRIZ meets industry standards.

7.What is the process for return or replacement of ADUM231E1BRIZ?

All ADUM231E1BRIZ units undergo pre-shipment inspection (PSI). If there is an issue with ADUM231E1BRIZ, 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 ADUM231E1BRIZ part is unused and in its original packaging.

Return procedure for ADUM231E1BRIZ:

1.Submit a request within 90 days.

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

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