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Home > Products > Isolators > Digital Isolators

Analog Devices Inc. ADUM142D1BRQZ

Name: ADUM142D1BRQZ
Brand: Analog Devices Inc.
SKU: ADUM142D1BRQZ
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: ADUM142D1BRQZ

Manufacturer:: Analog Devices Inc.

Category:: Digital Isolators

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

Datasheet:: ADUM142D1BRQZ.pdf

Description:: DGTL ISO 3000VRMS 4CH GP 16QSOP

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Product details

Overview

ADUM142D1BRQZ from Analog Devices is a quad-channel digital isolator based on iCoupler® technology, providing 3.0 kV_RMS reinforced isolation in a 16-lead QSOP package. It supports 150 Mbps data rate, 1.8 V to 5 V level translation, and operates up to 125°C - enabling robust SPI/data converter isolation in industrial motor drives and medical equipment.

For engineers reviewing the ADUM142D1BRQZ datasheet, ADUM142D1BRQZ pinout, ADUM142D1BRQZ application, or ADUM142D1BRQZ equivalent, key selection criteria include guaranteed 150 Mbps operation at 1.8 V, fail-safe high output configuration, 100 kV/µs common-mode transient immunity, and AEC-Q100 qualification for automotive subsystems requiring functional safety compliance.

Technical Context

The ADUM142D1BRQZ implements four independent unidirectional isolated channels using monolithic air-core transformers, ensuring dc-correct output states without input transitions. Its architecture delivers tight channel matching (≤3.0 ns codirectional skew) and low jitter (70 ps rms at 5 V), critical for synchronized sampling in isolated ADC interfaces.

It features dual supply domains (VDD1/VDD2), undervoltage lockout (1.5 V–1.6 V thresholds), and configurable disable/enable inputs. The device maintains signal integrity under high dv/dt noise with 100 kV/µs CMTI and meets IEC/EN/CSA 60601-1 for medical applications.

Key Specifications

Parameter	Value and Actual Design Meaning
Isolation Rating	3.0 kV_RMS for 1 minute - meets reinforced insulation requirements per IEC 60950-1 and IEC 60601-1.
Max Data Rate	150 Mbps - guaranteed performance across full temperature range (−40°C to +125°C) and supply voltages (1.8 V–5 V).
Propagation Delay	15 ns max at 1.8 V - enables timing-critical isolation in high-speed serial interfaces like isolated SPI clock domains.
CMTI	100 kV/µs - ensures reliable operation in noisy industrial environments with fast-switching power electronics.
Supply Voltage Range	1.8 V to 5 V per side - supports mixed-voltage system interfacing and ultra-low-power microcontroller integration.
Fail-Safe Output	High - outputs default to logic high during power loss or input disable, preventing undefined states in safety-critical control paths.
Package	RQ-16 (QSOP) - 3.5 mm creepage/clearance, RoHS-compliant, footprint-compatible with industry-standard 16-pin narrow SOIC alternatives.

Pinout & Package

ADUM142D1BRQZ is housed in a 16-lead QSOP (RQ-16) package with 0.65 mm pitch and 3.5 mm minimum creepage/clearance. Pin numbering follows standard QSOP convention with VDD1 (Pins 1, 2, 15, 16), GND1 (Pins 3, 4), VDD2 (Pins 8, 9, 12, 13), GND2 (Pins 7, 10), and four isolated channel pairs (A/B/C/D inputs on Side 1, outputs on Side 2).

Pin/Terminal	Circuit Role	Design Meaning
Pin 1, 2, 15, 16	VDD1	Input-side supply - powers primary-side logic and isolation transmitter; accepts 1.8 V–5 V.
Pin 3, 4	GND1	Input-side ground reference - must be separated from GND2 by ≥3.5 mm PCB clearance.
Pin 5, 6	INA, INB	Channel A/B inputs - accept CMOS logic levels referenced to VDD1/GND1.
Pin 7, 10	GND2	Output-side ground - isolated return path for secondary-side circuitry.
Pin 8, 9, 12, 13	VDD2	Output-side supply - powers receiver logic and output drivers; independent 1.8 V–5 V domain.
Pin 11, 14	OUTA, OUTB	Channel A/B outputs - deliver CMOS-compatible signals referenced to VDD2/GND2.
Pin 16 (VDD1)	Power Supply	Shared VDD1 pin - decoupling capacitor required within 1 cm of this pin for stable operation.

Key Features

Feature	Design Value
iCoupler® transformer isolation	Eliminates LED aging and temperature drift issues inherent in optocouplers; enables >50-year lifetime at 125°C.
1.8 V to 5 V level translation	Allows direct interface between low-voltage MCUs (e.g., ARM Cortex-M0+) and 3.3 V/5 V peripherals without external level shifters.
AEC-Q100 Grade 1 qualification	Validated for automotive applications including battery management systems and ADAS sensor interfaces operating from −40°C to +125°C.
Fail-safe high output state	Ensures defined logic-high outputs during power-up, brownout, or input disable - critical for preventing unintended actuator activation.
Low dynamic power consumption	7.7 mA typical supply current at 100 Mbps (1.8 V operation), reducing thermal load in dense PCB layouts.

Applications

Industrial Motor Drives	SPI-Isolated Data Acquisition
Use Scenario: Isolating gate driver control signals and feedback from high-voltage IGBT/MOSFET stages in servo inverters. IC Role / Device Role / Timing Role: Quad-channel isolator provides independent, low-skew timing paths for PWM enable, fault reporting, and current sense synchronization. Use Value: 100 kV/µs CMTI prevents false triggering during 1200 V bus switching transients; 15 ns propagation delay enables precise dead-time control.	Use Scenario: Isolating SPI communication between an MCU and isolated ADCs in high-precision sensor front-ends. IC Role / Device Role / Timing Role: Transmits SCLK, MOSI, MISO, and CS signals across isolation barrier while maintaining full-duplex timing integrity. Use Value: 3.0 ns maximum channel matching preserves SPI setup/hold margins; 150 Mbps rating supports oversampling at 20+ MSPS ADCs.
Medical Imaging Power Supplies	Automotive Battery Management Systems
Use Scenario: Isolating digital control and monitoring signals in X-ray generator HV power supplies compliant with IEC 60601-1. IC Role / Device Role / Timing Role: Provides reinforced 3.0 kV_RMS isolation for feedback loops, enable commands, and fault status reporting. Use Value: Certified to IEC 60601-1 and DIN EN IEC 60747-17 (VDE 0884-17); 3.5 mm creepage meets 2×MOPP requirements.	Use Scenario: Isolating cell voltage monitoring and balancing control signals in EV traction battery packs. IC Role / Device Role / Timing Role: Interfaces BMS MCU with isolated analog front-ends and solid-state relays in high-noise 400–800 V battery stacks. Use Value: AEC-Q100 qualified; fail-safe high outputs prevent short-circuit faults during MCU reset; 125°C operation supports under-hood placement.

Industrial Motor Drives

SPI-Isolated Data Acquisition

Use Scenario: Isolating gate driver control signals and feedback from high-voltage IGBT/MOSFET stages in servo inverters.

IC Role / Device Role / Timing Role: Quad-channel isolator provides independent, low-skew timing paths for PWM enable, fault reporting, and current sense synchronization.

Use Value: 100 kV/µs CMTI prevents false triggering during 1200 V bus switching transients; 15 ns propagation delay enables precise dead-time control.

Use Scenario: Isolating SPI communication between an MCU and isolated ADCs in high-precision sensor front-ends.

IC Role / Device Role / Timing Role: Transmits SCLK, MOSI, MISO, and CS signals across isolation barrier while maintaining full-duplex timing integrity.

Use Value: 3.0 ns maximum channel matching preserves SPI setup/hold margins; 150 Mbps rating supports oversampling at 20+ MSPS ADCs.

Medical Imaging Power Supplies

Automotive Battery Management Systems

Use Scenario: Isolating digital control and monitoring signals in X-ray generator HV power supplies compliant with IEC 60601-1.

IC Role / Device Role / Timing Role: Provides reinforced 3.0 kV_RMS isolation for feedback loops, enable commands, and fault status reporting.

Use Value: Certified to IEC 60601-1 and DIN EN IEC 60747-17 (VDE 0884-17); 3.5 mm creepage meets 2×MOPP requirements.

Use Scenario: Isolating cell voltage monitoring and balancing control signals in EV traction battery packs.

IC Role / Device Role / Timing Role: Interfaces BMS MCU with isolated analog front-ends and solid-state relays in high-noise 400–800 V battery stacks.

Use Value: AEC-Q100 qualified; fail-safe high outputs prevent short-circuit faults during MCU reset; 125°C operation supports under-hood placement.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
ADUM142E1BRQZ	Pin-compatible but with fail-safe low output state instead of high; identical isolation rating, speed, and package.	Required where safety logic mandates default-low outputs (e.g., active-low enable lines).	Select ADUM142E1BRQZ only when fail-safe low behavior is explicitly required by system architecture.
SI8641ED-B-IS	4-channel isolator with 5 kV_RMS rating, 150 Mbps, but uses capacitive coupling and lacks AEC-Q100 qualification.	Suitable for industrial automation but not certified for automotive or medical use per IEC 60601-1.	Choose SI8641ED-B-IS only for cost-sensitive non-automotive/non-medical designs needing higher isolation voltage.

Compared with ADUM142E1BRQZ, ADUM142D1BRQZ provides fail-safe high outputs essential for driving high-side switches; versus SI8641ED-B-IS, it offers AEC-Q100 and IEC 60601-1 certifications critical for automotive and medical deployments.

Availability

ADUM142D1BRQZ is available at Aetrix Electronics and suitable for industrial motor drives, medical imaging power supplies, and automotive battery management systems requiring stable component supply, long-term lifecycle support, and traceable sourcing.

Supply support for ADUM142D1BRQZ 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 ADuM142D/ADuM142E family was designed specifically for high-reliability multichannel isolation in safety-critical systems, combining iCoupler® reliability with AEC-Q100 and IEC 60601-1 compliance.

FAQ

What is the isolation voltage rating of the ADUM142D1BRQZ?

The ADUM142D1BRQZ provides 3.0 kV_RMS reinforced isolation for 1 minute, verified per UL 1577 and DIN EN IEC 60747-17 (VDE 0884-17). This rating applies to the RQ-16 QSOP package and supports 2×MOPP medical isolation requirements when properly implemented on PCB.

Does the ADUM142D1BRQZ support 1.8 V operation on both sides?

Yes, the ADUM142D1BRQZ supports independent 1.8 V to 5 V operation on both VDD1 and VDD2 supplies. At 1.8 V, it guarantees 150 Mbps data rate with 15 ns maximum propagation delay and maintains 100 kV/µs CMTI - enabling direct interfacing with ultra-low-power microcontrollers.

What does "fail-safe high" mean for the ADUM142D1BRQZ?

"Fail-safe high" means that when VDD1 is unpowered or the DISABLE1 input is asserted, all four outputs of the ADUM142D1BRQZ transition to and hold a logic-high state. This behavior prevents undefined control signals in safety-critical paths such as gate driver enables or relay controls.

Is the ADUM142D1BRQZ pin-compatible with other ADuM142x variants?

Yes, the ADUM142D1BRQZ is pin-compatible with ADUM142E1BRQZ and ADUM142D0BRQZ within the same RQ-16 package. Differences are limited to fail-safe state (high vs. low) and channel direction (unidirectional D0/D1 vs. bidirectional E0/E1), requiring no PCB layout changes.

Which safety standards does the ADUM142D1BRQZ comply with?

The ADUM142D1BRQZ complies with UL 1577 (3000 V_RMS), IEC/EN/CSA 60950-1, IEC/CSA 60601-1 (medical), IEC/CSA 61010-1 (test equipment), and CQC GB 4943.1. Its certification to DIN EN IEC 60747-17 (VDE 0884-17) confirms reinforced insulation suitability for functional safety applications.

ADUM142D1BRQZ Specifications

Product attributes: Attribute value

Manufacturer:: Analog Devices Inc.

Series:: iCoupler®

Package/Case:: 16-SSOP (0.154", 3.90mm Width)

Packaging:: Tube

Product Status:: Active

Technology:: Magnetic Coupling

Type:: General Purpose

Isolated Power:: No

Number of Channels:: 4

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

Channel Type:: Unidirectional

Voltage - Isolation:: 3000Vrms

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-QSOP

ADUM142D1BRQZ FAQ

1.How can I place an order for ADUM142D1BRQZ through Aetrix?

Please submit a Request for Quotation (RFQ) for ADUM142D1BRQZ 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 ADUM142D1BRQZ reliable?

The price and inventory of ADUM142D1BRQZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADUM142D1BRQZ is usually 5 days.

3.What payment methods are accepted for ADUM142D1BRQZ?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADUM142D1BRQZ transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for ADUM142D1BRQZ?

ADUM142D1BRQZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your ADUM142D1BRQZ 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 ADUM142D1BRQZ?

For technical support, including ADUM142D1BRQZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADUM142D1BRQZ requirements.

6.How does Aetrix verify that ADUM142D1BRQZ is sourced from the original manufacturer or authorized distributors?

All ADUM142D1BRQZ 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 ADUM142D1BRQZ meets industry standards.

7.What is the process for return or replacement of ADUM142D1BRQZ?

All ADUM142D1BRQZ units undergo pre-shipment inspection (PSI). If there is an issue with ADUM142D1BRQZ, 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 ADUM142D1BRQZ part is unused and in its original packaging.

Return procedure for ADUM142D1BRQZ:

1.Submit a request within 90 days.

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

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