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Home > Products > Isolators > Digital Isolators

Analog Devices Inc. ADUM131E1BRWZ

Name: ADUM131E1BRWZ
Brand: Analog Devices Inc.
SKU: ADUM131E1BRWZ
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: ADUM131E1BRWZ

Manufacturer:: Analog Devices Inc.

Category:: Digital Isolators

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

Datasheet:: ADUM131E1BRWZ.pdf

Description:: DGTL ISO 3750VRMS 3CH GP 16SOIC

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Product details

Overview

ADUM131E1BRWZ from Analog Devices is a triple-channel digital isolator based on iCoupler® transformer technology, providing reinforced galvanic isolation for high-noise industrial and medical systems. It delivers 150 Mbps data rate, 13 ns max propagation delay at 5 V, 100 kV/µs common-mode transient immunity, and operates across 1.8 V to 5 V supply rails with fail-safe high output configuration. It is used in isolated SPI interfaces for motor drives and PLC I/O modules.

For engineers reviewing the ADUM131E1BRWZ datasheet, ADUM131E1BRWZ pinout, ADUM131E1BRWZ application, or ADUM131E1BRWZ equivalent, key selection criteria include its 3.75 kV_RMS isolation rating (RW-16 SOIC_W package), VDE 0884-17 certification, channel matching ≤3.0 ns, and compatibility with 1.8 V logic on either side of the barrier.

Technical Context

The ADUM131E1BRWZ implements three independent unidirectional CMOS-isolated channels using monolithic air-core transformers, enabling dc-correct signal transmission without refresh cycles. Its architecture supports asymmetric voltage translation (e.g., 1.8 V input / 3.3 V output) and includes integrated undervoltage lockout (UVLO) with 1.5 V hysteresis on both sides.

It features programmable fail-safe behavior: outputs default to logic high when input power is absent or DISABLE1 is asserted. Pin-compatible with ADUM1300/ADUM1301, it uses edge-detection encoding for robust noise immunity and maintains tight channel-to-channel skew (<3.0 ns) across temperature and voltage.

Key Specifications

Parameter	Value and Actual Design Meaning
Data Rate	150 Mbps maximum - guarantees full-speed SPI, RS-485, and CAN FD signal isolation without bit errors.
Propagation Delay	13 ns max at 5 V - enables timing-critical real-time control loops with sub-15 ns latency per channel.
Common-Mode Transient Immunity	100 kV/µs - suppresses fast transients from motor switching or ESD events in industrial environments.
Isolation Voltage	3750 V_RMS for 1 minute - meets reinforced insulation requirements for IEC 62368-1 and IEC 60601-1 (2 MOPP).
Supply Range	1.8 V to 5 V on both sides - allows direct interfacing with low-voltage microcontrollers and legacy 3.3 V/5 V peripherals.
Fail-Safe Output State	High - ensures safe default state (e.g., gate driver enable held active) during power loss or fault conditions.
Operating Temperature	−40°C to +125°C - supports deployment in under-hood automotive ECUs and industrial inverters.

Pinout & Package

RW-16 wide-body SOIC package (10.3 mm × 7.5 mm, 1.27 mm pitch), RoHS compliant, with creepage/clearance ≥7.8 mm for reinforced insulation.

Pin/Terminal	Circuit Role	Design Meaning
VDD1	Primary-side power supply	Supplies input-side logic and isolation transmitter; accepts 1.8–5 V; UVLO threshold = 1.5 V.
GND1	Primary-side ground reference	Return path for VDD1; must be separated from GND2 by ≥7.8 mm PCB clearance.
INA, INB, INC	Input data channels A/B/C	CMOS-compatible inputs; VIH = 0.7×VDD1, VIL = 0.3×VDD1; support 1.8 V logic thresholds.
DISABLE1	Input-side disable control	Pull-down enabled (9–15 µA); forces all outputs into high-impedance when driven high.
VDD2	Secondary-side power supply	Supplies output-side logic and isolation receiver; independent 1.8–5 V rail; UVLO = 1.5 V.
GND2	Secondary-side ground reference	Isolated return for VDD2; forms safety barrier with GND1; requires physical separation.
OUTA, OUTB, OUTC	Output data channels A/B/C	Fail-safe high outputs; VOH ≥ VDD2 − 0.4 V @ 4 mA; VOL ≤ 0.4 V @ 4 mA.
VE2	Secondary-side enable input	Pull-up enabled (−3 to −10 µA); disables outputs when pulled low; supports hot-swap sequencing.

Key Features

Feature	Design Value
iCoupler® transformer isolation	Eliminates LED aging and CTR degradation of optocouplers; achieves >50-year lifetime at 125°C junction temp.
100 kV/µs CMTI	Prevents data corruption in high-di/dt environments like variable-frequency drives and welding equipment.
1.8 V to 5 V dual-supply operation	Enables level-shifting between modern ultra-low-power MCUs and legacy industrial buses without external translators.
VDE 0884-17 (DIN EN IEC 60747-17) certified	Validated partial discharge <5 pC at 1059 V_PEAK; required for medical (IEC 60601-1) and industrial safety compliance.
Fail-safe high output	Guarantees active-state default for safety-critical functions (e.g., holding brake release or gate driver enable).
Channel matching ≤3.0 ns	Maintains precise timing alignment across all three channels-critical for synchronized ADC sampling or PWM dead-time control.

Applications

Motor Drive Isolation	SPI Isolation for Data Converters
Use Scenario: Isolating gate driver signals and feedback paths in 3-phase inverter stages of servo drives and EV traction inverters. IC Role / Device Role / Timing Role: Provides independent, low-skew isolation for PWM enable, fault reporting, and current sense ADC readback channels. Use Value: Enables 125°C ambient operation with 100 kV/µs CMTI margin against IGBT switching noise, preserving functional safety integrity.	Use Scenario: Isolating high-speed SPI communication between an MCU and isolated precision ADCs (e.g., AD7403) in energy metering or power quality analyzers. IC Role / Device Role / Timing Role: Transfers 16-bit conversion results at up to 150 Mbps while maintaining <3 ns inter-channel skew for synchronized multi-channel sampling. Use Value: Eliminates optocoupler latency and jitter, achieving <90 ps RMS jitter for sub-16-bit effective resolution in metrology-grade designs.
Industrial Fieldbus Node	Medical Equipment Isolation
Use Scenario: Signal isolation in PROFIBUS DP or Modbus RTU slave nodes deployed in factory automation cabinets with shared 24 V DC supplies. IC Role / Device Role / Timing Role: Isolates UART TX/RX and hardware flow control lines (RTS/CTS) while supporting 12 Mbps RS-485 data rates. Use Value: Meets IEC 61000-4-4/6 surge immunity via 3750 V_RMS isolation and 4200 V_PEAK transient withstand, reducing system-level filtering.	Use Scenario: Isolating patient-connected sensor front-ends (ECG, EEG) from digital processing units in diagnostic imaging and monitoring devices. IC Role / Device Role / Timing Role: Provides 2 MOPP reinforced insulation (IEC 60601-1) for analog sensor data and digital control signals across the patient barrier. Use Value: Certified to VDE 0884-17 and IEC 60601-1 Annex YY, eliminating need for external creepage/clearance extensions in compact PCB layouts.

Motor Drive Isolation

SPI Isolation for Data Converters

Use Scenario: Isolating gate driver signals and feedback paths in 3-phase inverter stages of servo drives and EV traction inverters.

IC Role / Device Role / Timing Role: Provides independent, low-skew isolation for PWM enable, fault reporting, and current sense ADC readback channels.

Use Value: Enables 125°C ambient operation with 100 kV/µs CMTI margin against IGBT switching noise, preserving functional safety integrity.

Use Scenario: Isolating high-speed SPI communication between an MCU and isolated precision ADCs (e.g., AD7403) in energy metering or power quality analyzers.

IC Role / Device Role / Timing Role: Transfers 16-bit conversion results at up to 150 Mbps while maintaining <3 ns inter-channel skew for synchronized multi-channel sampling.

Use Value: Eliminates optocoupler latency and jitter, achieving <90 ps RMS jitter for sub-16-bit effective resolution in metrology-grade designs.

Industrial Fieldbus Node

Medical Equipment Isolation

Use Scenario: Signal isolation in PROFIBUS DP or Modbus RTU slave nodes deployed in factory automation cabinets with shared 24 V DC supplies.

IC Role / Device Role / Timing Role: Isolates UART TX/RX and hardware flow control lines (RTS/CTS) while supporting 12 Mbps RS-485 data rates.

Use Value: Meets IEC 61000-4-4/6 surge immunity via 3750 V_RMS isolation and 4200 V_PEAK transient withstand, reducing system-level filtering.

Use Scenario: Isolating patient-connected sensor front-ends (ECG, EEG) from digital processing units in diagnostic imaging and monitoring devices.

IC Role / Device Role / Timing Role: Provides 2 MOPP reinforced insulation (IEC 60601-1) for analog sensor data and digital control signals across the patient barrier.

Use Value: Certified to VDE 0884-17 and IEC 60601-1 Annex YY, eliminating need for external creepage/clearance extensions in compact PCB layouts.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
ADUM130E1BRWZ	Same RW-16 package and pinout; 3.75 kV_RMS rating; fail-safe low output instead of high.	Preferred where default-off safety state is required (e.g., disabling power stage on fault).	Select when system safety logic mandates low-default outputs; verify compatibility with downstream pull-up requirements.
SI8631ED-B-IS	3-channel, 5 kV_RMS, 150 Mbps; capacitive isolation; different pinout (SOIC-16 narrow); no 1.8 V support.	Better suited for high-voltage AC mains interfaces but lacks 1.8 V logic compatibility and VDE 0884-17 certification.	Choose only if higher isolation voltage is critical and 1.8 V interface is unnecessary; requires PCB layout change.

Compared with ADUM131E1BRWZ, ADUM130E1BRWZ offers identical performance and footprint but inverted fail-safe behavior, while SI8631ED-B-IS trades VDE certification and low-voltage support for higher isolation voltage and different isolation physics-requiring redesign for pin compatibility and safety validation.

Availability

ADUM131E1BRWZ is available at Aetrix Electronics and suitable for industrial motor control, medical diagnostics, and energy metering applications requiring stable component supply, long-term lifecycle assurance, and certified reinforced isolation.

Supply support for ADUM131E1BRWZ 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 ADuM130x/ADuM131x family was designed to replace optocouplers in high-reliability, high-speed isolation applications-delivering superior timing accuracy, longevity, and safety certification for mission-critical systems.

FAQ

What is the isolation voltage rating of the ADUM131E1BRWZ?

The ADUM131E1BRWZ has a rated dielectric insulation voltage of 3750 V_RMS for 1 minute, verified per UL 1577 and DIN EN IEC 60747-17 (VDE 0884-17). Its VIORM is 849 V_PEAK, supporting reinforced insulation per IEC 60601-1 (2 MOPP) and IEC 62368-1 in the RW-16 SOIC_W package.

Does the ADUM131E1BRWZ support 1.8 V logic levels on both sides?

Yes, the ADUM131E1BRWZ operates with supply voltages from 1.8 V to 5 V independently on VDD1 and VDD2. At 1.8 V, it guarantees 150 Mbps data rate and 15 ns max propagation delay, with input thresholds scaled to 0.7×VDDx and 0.3×VDDx for robust low-voltage interfacing.

What is the fail-safe behavior of the ADUM131E1BRWZ?

The ADUM131E1BRWZ is configured for fail-safe high output: when VDD1 is unpowered or DISABLE1 is asserted high, all three outputs (OUTA/OUTB/OUTC) transition to and hold a logic high state. This ensures active-enable defaults for safety-critical peripherals like gate drivers or relay controllers.

Is the ADUM131E1BRWZ pin-compatible with earlier Analog Devices isolators?

Yes, the ADUM131E1BRWZ is pin-compatible with the ADUM1300 and ADUM1301 families in the same RW-16 SOIC_W package. This allows drop-in replacement in existing designs, provided the fail-safe output polarity (high vs. low) and ENABLE/VE2 control logic are verified for functional equivalence.

Which safety certifications does the ADUM131E1BRWZ hold?

The ADUM131E1BRWZ holds UL 1577 (3750 V_RMS), IEC/EN/CSA 62368-1, IEC/CSA 60601-1 (2 MOPP), IEC/CSA 61010-1, and DIN EN IEC 60747-17 (VDE 0884-17) certifications. The * marking on the device denotes VDE 0884-17 compliance with partial discharge <5 pC at 1059 V_PEAK.

ADUM131E1BRWZ 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:: 3750Vrms

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

ADUM131E1BRWZ FAQ

1.How can I place an order for ADUM131E1BRWZ through Aetrix?

Please submit a Request for Quotation (RFQ) for ADUM131E1BRWZ 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 ADUM131E1BRWZ reliable?

The price and inventory of ADUM131E1BRWZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADUM131E1BRWZ is usually 5 days.

3.What payment methods are accepted for ADUM131E1BRWZ?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADUM131E1BRWZ transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for ADUM131E1BRWZ?

ADUM131E1BRWZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your ADUM131E1BRWZ 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 ADUM131E1BRWZ?

For technical support, including ADUM131E1BRWZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADUM131E1BRWZ requirements.

6.How does Aetrix verify that ADUM131E1BRWZ is sourced from the original manufacturer or authorized distributors?

All ADUM131E1BRWZ 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 ADUM131E1BRWZ meets industry standards.

7.What is the process for return or replacement of ADUM131E1BRWZ?

All ADUM131E1BRWZ units undergo pre-shipment inspection (PSI). If there is an issue with ADUM131E1BRWZ, 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 ADUM131E1BRWZ part is unused and in its original packaging.

Return procedure for ADUM131E1BRWZ:

1.Submit a request within 90 days.

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

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