Analog Devices Inc. ADUM142E0BRQZ

Overview

ADUM142E0BRQZ from Analog Devices is a quad-channel digital isolator based on iCoupler® transformer technology, providing 3.0 kV_RMS isolation with 150 Mbps guaranteed data rate, 13 ns max propagation delay at 5 V, and 1.8 V to 5 V level translation. It serves as a high-speed, noise-immune signal barrier in isolated SPI interfaces, motor control feedback loops, and industrial PLC I/O modules.

For engineers reviewing the ADUM142E0BRQZ datasheet, ADUM142E0BRQZ pinout, ADUM142E0BRQZ application, or ADUM142E0BRQZ equivalent, key selection criteria include common-mode transient immunity (100 kV/µs), fail-safe output configuration (high), AEC-Q100 qualification, and QSOP-16 package compatibility with space-constrained board layouts.

Technical Context

The ADUM142E0BRQZ implements four independent unidirectional CMOS-isolated channels using monolithic air-core transformers, enabling dc-correct operation 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 (UVLO) with 1.5 V hysteresis.

Unlike optocouplers, it guarantees channel matching ≤3.0 ns and pulse width distortion ≤3 ns across temperature (−40°C to +125°C), with jitter as low as 70 ps rms at 5 V. The device features two enable inputs (VE1, VE2) and one disable input (DISABLE1), supporting flexible power sequencing and tristate output control.

Key Specifications

Pinout & Package

ADUM142E0BRQZ is housed in a RoHS-compliant 16-lead QSOP (RQ-16) package with 3.5 mm creepage/clearance, optimized for high-density PCB layouts requiring reinforced isolation.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADUM142E0BRQZ, ADUM142E0BRIZ offers identical performance in a larger SOIC package with reduced creepage, while SI8642ED-B-IS provides higher isolation voltage but lacks automotive qualification and deterministic fail-safe behavior-making ADUM142E0BRQZ optimal for space-constrained, safety-critical automotive and industrial designs.

Availability

ADUM142E0BRQZ is available at Aetrix Electronics and suitable for industrial motor control, automotive battery management systems, PLC digital I/O modules, and isolated SPI data converter interfaces requiring stable component supply and long-term lifecycle support.

Supply support for ADUM142E0BRQZ 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 ADuM142E series belongs to Analog Devices' iCoupler® digital isolator product line, designed specifically for replacing optocouplers in high-noise, high-reliability applications demanding precise timing, low power, and regulatory-compliant galvanic isolation.

FAQ

What is the maximum guaranteed data rate for ADUM142E0BRQZ?

The ADUM142E0BRQZ has a maximum guaranteed data rate of 150 Mbps across its full operating temperature range (−40°C to +125°C) and supply voltage range (1.8 V to 5 V). This value is tested and specified in the datasheet under switching specifications with CL = 15 pF and CMOS signal levels. Higher data rates may be achievable but are not guaranteed.

Does ADUM142E0BRQZ support level translation between different supply voltages?

Yes, ADUM142E0BRQZ supports true bidirectional level translation: VDD1 and VDD2 can operate independently from 1.8 V to 5 V. For example, it can translate 1.8 V logic on the input side (VDD1) to 3.3 V or 5 V logic on the output side (VDD2), enabling seamless interfacing between low-power microcontrollers and higher-voltage peripherals without external level shifters.

What fail-safe output behavior does ADUM142E0BRQZ implement?

ADUM142E0BRQZ is an E0 variant, meaning its outputs transition to a pre-determined high state when the input power supply (VDD1) is absent or when DISABLE1 is asserted. This fail-safe-high behavior ensures predictable system response during power faults or communication loss-critical for safety functions like disabling gate drivers or asserting alarm signals in industrial and automotive systems.

Is ADUM142E0BRQZ qualified for automotive applications?

Yes, ADUM142E0BRQZ is AEC-Q100 qualified for automotive applications (Grade 1: −40°C to +125°C ambient). It meets stringent reliability, thermal, and ESD requirements for use in engine control units, battery management systems, and ADAS sensor interfaces. Certification documentation is available through Analog Devices' automotive product portal.

What package type and footprint does ADUM142E0BRQZ use?

ADUM142E0BRQZ uses a 16-lead QSOP (RQ-16) package with 3.5 mm minimum creepage and clearance, measuring 3.9 mm × 4.9 mm × 1.5 mm. It is RoHS compliant and pin-compatible with other ADuM142E0 variants in the same RQ-16 outline, enabling drop-in replacement within the same family without layout changes.