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Home > Products > Isolators > Digital Isolators

Analog Devices Inc. ADUM140D1BRZ-RL7

Name: ADUM140D1BRZ-RL7
Brand: Analog Devices Inc.
SKU: ADUM140D1BRZ-RL7
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: ADUM140D1BRZ-RL7

Manufacturer:: Analog Devices Inc.

Category:: Digital Isolators

Package:: 16-SOIC (0.154", 3.90mm Width)

Datasheet:: ADUM140D1BRZ-RL7.pdf

Description:: DGTL ISO 3750VRMS 4CH GP 16SOIC

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Product details

Overview

ADUM140D1BRZ-RL7 from Analog Devices is a quad-channel digital isolator based on iCoupler® transformer technology, providing 3.0 kV_RMS galvanic isolation between two independent 1.8 V to 5 V logic domains. It delivers 150 Mbps guaranteed data rate, 13 ns max propagation delay at 5 V, and high common-mode transient immunity of 100 kV/µs - used in isolated SPI interfaces for industrial PLC I/O modules.

For engineers reviewing the ADUM140D1BRZ-RL7 datasheet, ADUM140D1BRZ-RL7 pinout, ADUM140D1BRZ-RL7 application, or ADUM140D1BRZ-RL7 equivalent, key selection criteria include fail-safe output state (high), SOIC_N-16 package clearance (4.0 mm), V_IORM = 565 V_PEAK, and AEC-Q100 qualification for automotive powertrain control units.

Technical Context

The ADUM140D1BRZ-RL7 implements four independent unidirectional CMOS-isolated channels using monolithic air-core transformers, with no external components required. Its architecture ensures dc-correct output states during input inactivity and supports level translation across the isolation barrier without timing skew penalties.

It features dual supply operation (V_DD1/V_DD2 = 1.8–5 V), undervoltage lockout (1.5 V/1.6 V thresholds), and failsafe-high output configuration. Channel matching is ≤3.0 ns codirectional, and pulse width distortion remains ≤3 ns across temperature and voltage ranges.

Key Specifications

Parameter	Value and Actual Design Meaning
Isolation Rating	3000 V_RMS for 1 minute - meets UL 1577 and IEC/EN/CSA 60950-1 safety requirements for reinforced insulation in industrial equipment.
Data Rate	150 Mbps maximum guaranteed - supports high-speed SPI clocking up to 75 MHz with margin for jitter and PWD.
Propagation Delay	13 ns max at 5 V - enables sub-20 ns round-trip latency in bidirectional isolated communication links.
Common-Mode Transient Immunity	100 kV/µs - maintains signal integrity in noisy motor drive or power converter environments with fast dv/dt transients.
Supply Voltage Range	1.8 V to 5 V per side - allows direct interfacing with low-voltage microcontrollers and legacy 5 V peripherals without level shifters.
Fail-Safe Output State	High - outputs default to logic high when input power is absent or disabled, critical for safe shutdown in industrial safety circuits.
Operating Temperature	−40°C to +125°C - qualified for under-hood automotive applications and high-temperature industrial enclosures.
Regulatory Approvals	UL, VDE (DIN EN IEC 60747-17), CQC, CSA 60601-1, IEC 61010-1 - certified for medical, industrial, and automotive end-equipment compliance.

Pinout & Package

ADUM140D1BRZ-RL7 uses a RoHS-compliant 16-lead narrow-body SOIC (R-16/SOIC_N) package with 4.0 mm creepage and clearance, optimized for space-constrained PCB layouts requiring reinforced isolation.

Pin/Terminal	Circuit Role	Design Meaning
VDD1	Primary-side supply	Power for input-side logic and channel 1–2 transmitters; must be 1.8–5 V with UVLO protection.
GND1	Primary-side ground	Reference for input signals and VDD1; requires separate isolation from GND2 plane.
INA, INB	Input channels A/B	CMOS-compatible inputs accepting 1.8–5 V logic; drive isolated outputs OUTA/OUTB.
IN1, IN2	Input channels C/D	Additional isolated inputs; match INA/INB electrical behavior and timing specs.
VDD2	Secondary-side supply	Independent 1.8–5 V supply for output-side logic and receivers; enables level translation.
GND2	Secondary-side ground	Isolated reference for outputs; must not share copper with GND1 beyond transformer barrier.
OUTA, OUTB	Output channels A/B	Failsafe-high outputs; remain high during VDD1 loss or DISABLE assertion.
OUT1, OUT2	Output channels C/D	Match OUTA/OUTB behavior; support synchronous multi-channel isolation in SPI data lines.
DISABLE	Input disable control	Pull-down enabled; asserts tristate on all outputs when driven high, reducing dynamic current.
VE2	Enable control for outputs 1/2	Pull-up enabled; disables OUT1/OUT2 only when pulled low, enabling partial channel control.

Key Features

Feature	Design Value
iCoupler® transformer isolation	Eliminates LED aging and CTR degradation of optocouplers; achieves >50-year lifetime at 125°C per IEC 60747-17.
DC-correct output behavior	Maintains valid logic state without input toggling - essential for watchdog and status monitoring in safety-critical systems.
Low propagation delay skew	≤3.0 ns channel-to-channel matching - preserves timing alignment in parallel data buses like isolated ADC interfaces.
Integrated UVLO protection	1.5 V/1.6 V hysteresis prevents metastability during brownout conditions on either supply rail.
AEC-Q100 Grade 1 qualification	Validated for automotive powertrain and chassis applications with full temperature and reliability testing per stress test schedule.

Applications

Industrial PLC I/O Modules	SPI-Isolated Data Converters
Use Scenario: Isolating digital I/O signals between field-side 24 V sensors/actuators and controller-side 3.3 V logic in programmable logic controllers. IC Role / Device Role / Timing Role: Quad-channel digital isolator providing galvanic separation for four discrete input/output lines with synchronized timing. Use Value: Prevents ground loop currents and noise injection while maintaining <15 ns inter-channel skew for deterministic scan-cycle timing.	Use Scenario: Isolating SPI bus (SCLK, MOSI, MISO, CS) between MCU and isolated ADC in high-voltage energy metering systems. IC Role / Device Role / Timing Role: Unidirectional isolator for SCLK/MOSI and bidirectional-capable isolator for MISO, preserving full-duplex timing integrity. Use Value: Enables 150 Mbps operation to support 1 MSPS ADC sampling with overhead for CRC and framing, without added timing uncertainty.
Automotive Battery Management Systems	Medical Patient Monitoring Interfaces
Use Scenario: Isolating cell voltage measurement data and balancing control signals between high-voltage battery stack and low-voltage MCU in EV BMS. IC Role / Device Role / Timing Role: Reinforced isolator meeting AEC-Q100 Grade 1 and CSA 60601-1 creepage requirements for patient-connected equipment. Use Value: Provides 3000 V_RMS withstand and 565 V_PEAK working voltage to satisfy IEC 61851-23 and ISO 6469-3 insulation coordination.	Use Scenario: Isolating ECG/EEG analog front-end digital control lines from host processor in Class II medical devices. IC Role / Device Role / Timing Role: Safety-certified isolator supporting 60 Hz mains-referenced leakage current limits and reinforced insulation per IEC 60601-1 3rd edition. Use Value: Meets 4.0 mm creepage/clearance and CTI >400 V to prevent tracking failure in humid clinical environments.

Industrial PLC I/O Modules

SPI-Isolated Data Converters

Use Scenario: Isolating digital I/O signals between field-side 24 V sensors/actuators and controller-side 3.3 V logic in programmable logic controllers.

IC Role / Device Role / Timing Role: Quad-channel digital isolator providing galvanic separation for four discrete input/output lines with synchronized timing.

Use Value: Prevents ground loop currents and noise injection while maintaining <15 ns inter-channel skew for deterministic scan-cycle timing.

Use Scenario: Isolating SPI bus (SCLK, MOSI, MISO, CS) between MCU and isolated ADC in high-voltage energy metering systems.

IC Role / Device Role / Timing Role: Unidirectional isolator for SCLK/MOSI and bidirectional-capable isolator for MISO, preserving full-duplex timing integrity.

Use Value: Enables 150 Mbps operation to support 1 MSPS ADC sampling with overhead for CRC and framing, without added timing uncertainty.

Automotive Battery Management Systems

Medical Patient Monitoring Interfaces

Use Scenario: Isolating cell voltage measurement data and balancing control signals between high-voltage battery stack and low-voltage MCU in EV BMS.

IC Role / Device Role / Timing Role: Reinforced isolator meeting AEC-Q100 Grade 1 and CSA 60601-1 creepage requirements for patient-connected equipment.

Use Value: Provides 3000 V_RMS withstand and 565 V_PEAK working voltage to satisfy IEC 61851-23 and ISO 6469-3 insulation coordination.

Use Scenario: Isolating ECG/EEG analog front-end digital control lines from host processor in Class II medical devices.

IC Role / Device Role / Timing Role: Safety-certified isolator supporting 60 Hz mains-referenced leakage current limits and reinforced insulation per IEC 60601-1 3rd edition.

Use Value: Meets 4.0 mm creepage/clearance and CTI >400 V to prevent tracking failure in humid clinical environments.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
ADUM141D1BRZ-RL7	Same SOIC_N-16 package and 3.0 kV_RMS rating, but includes output enable (OE) instead of disable (DISABLE) control.	Preferred where active-low output enable is required for bus arbitration or shared-bus topologies.	Select ADUM141D1BRZ-RL7 if OE functionality is needed; ADUM140D1BRZ-RL7 is optimal for simple disable-driven fail-safe shutdown.
SI8641ED-B-IS	4-channel isolator with 3.75 kV_RMS rating (SOIC_W-16), higher VIORM (800 V_PEAK), but no AEC-Q100 qualification.	Better suited for high-altitude or high-working-voltage industrial inverters where enhanced creepage is mandatory.	Choose SI8641ED-B-IS when >3.0 kV_RMS or >565 V_PEAK is required; ADUM140D1BRZ-RL7 remains preferred for automotive-qualified designs.

Compared with ADUM141D1BRZ-RL7 and SI8641ED-B-IS, ADUM140D1BRZ-RL7 uniquely combines AEC-Q100 Grade 1 qualification, failsafe-high output behavior, and 1.8 V compatibility - making it the only option qualified for automotive powertrain control with deterministic high-state defaults during fault conditions.

Availability

ADUM140D1BRZ-RL7 is available at Aetrix Electronics and suitable for industrial automation, automotive battery management, and medical instrumentation requiring stable component supply, long-term lifecycle support, and traceable sourcing.

Supply support for ADUM140D1BRZ-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 ADuM140D/ADuM140E family was designed specifically for high-reliability multichannel isolation in safety-critical systems where optocoupler limitations - including speed, lifetime, and temperature drift - impede performance.

FAQ

What is the isolation voltage rating of ADUM140D1BRZ-RL7?

ADUM140D1BRZ-RL7 has a rated dielectric insulation voltage of 3000 V_RMS for 1 minute per UL 1577 and IEC/EN/CSA 60950-1. Its reinforced insulation supports a maximum working voltage (V_IORM) of 565 V_PEAK, validated per DIN EN IEC 60747-17 (VDE 0884-17). This rating applies specifically to the R-16 narrow-body SOIC package variant.

Does ADUM140D1BRZ-RL7 support level translation between different logic voltages?

Yes, ADUM140D1BRZ-RL7 supports bidirectional level translation between 1.8 V, 2.5 V, 3.3 V, and 5 V logic domains on each side of the isolation barrier. VDD1 and VDD2 operate independently within 1.8 V to 5 V, allowing direct interface with mixed-voltage systems such as 1.8 V FPGAs and 5 V DACs without external level shifters.

What is the fail-safe output behavior of ADUM140D1BRZ-RL7?

ADUM140D1BRZ-RL7 is configured as a failsafe-high device: when VDD1 is unpowered or the DISABLE pin is asserted high, all four outputs (OUTA, OUTB, OUT1, OUT2) transition to and hold a logic high state. This behavior is confirmed in the datasheet truth tables and is intrinsic to the D1 variant designation within the ADuM140D family.

Is ADUM140D1BRZ-RL7 qualified for automotive applications?

Yes, ADUM140D1BRZ-RL7 is AEC-Q100 qualified for Grade 1 (−40°C to +125°C ambient) operation. It undergoes stress testing per the AEC-Q100 standard including HTOL, TC, UHAST, and ESD, and is approved for use in automotive powertrain, chassis, and body electronics where reinforced isolation and functional safety are required.

What package type does ADUM140D1BRZ-RL7 use, and what are its isolation-related dimensions?

ADUM140D1BRZ-RL7 uses the R-16 narrow-body SOIC (SOIC_N) package. It provides minimum external creepage and clearance of 4.0 mm between input and output pins, PCB clearance of 4.5 mm, and internal insulation gap of 29 µm - satisfying IEC 60950-1 and IEC 60601-1 requirements for pollution degree 2 and altitudes ≤2000 m.

ADUM140D1BRZ-RL7 Specifications

Product attributes: Attribute value

Manufacturer:: Analog Devices Inc.

Series:: iCoupler®

Package/Case:: 16-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:: 4

Inputs - Side 1/Side 2:: 4/0

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

ADUM140D1BRZ-RL7 FAQ

1.How can I place an order for ADUM140D1BRZ-RL7 through Aetrix?

Please submit a Request for Quotation (RFQ) for ADUM140D1BRZ-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 ADUM140D1BRZ-RL7 reliable?

The price and inventory of ADUM140D1BRZ-RL7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADUM140D1BRZ-RL7 is usually 5 days.

3.What payment methods are accepted for ADUM140D1BRZ-RL7?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADUM140D1BRZ-RL7 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for ADUM140D1BRZ-RL7?

ADUM140D1BRZ-RL7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your ADUM140D1BRZ-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 ADUM140D1BRZ-RL7?

For technical support, including ADUM140D1BRZ-RL7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADUM140D1BRZ-RL7 requirements.

6.How does Aetrix verify that ADUM140D1BRZ-RL7 is sourced from the original manufacturer or authorized distributors?

All ADUM140D1BRZ-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 ADUM140D1BRZ-RL7 meets industry standards.

7.What is the process for return or replacement of ADUM140D1BRZ-RL7?

All ADUM140D1BRZ-RL7 units undergo pre-shipment inspection (PSI). If there is an issue with ADUM140D1BRZ-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 ADUM140D1BRZ-RL7 part is unused and in its original packaging.

Return procedure for ADUM140D1BRZ-RL7:

1.Submit a request within 90 days.

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

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