Analog Devices Inc. ADUM141D0BRQZ

Overview

ADUM141D0BRQZ from Analog Devices is a quad-channel digital isolator based on iCoupler® technology, providing 3.0 kV_RMS galvanic 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, industrial field buses, and power supply feedback loops.

For engineers reviewing the ADUM141D0BRQZ datasheet, ADUM141D0BRQZ pinout, ADUM141D0BRQZ application, or ADUM141D0BRQZ equivalent, key selection criteria include its 100 kV/µs common-mode transient immunity, fail-safe high/low output options, AEC-Q100 qualification, and QSOP-16 package compatibility with space-constrained industrial and automotive designs.

Technical Context

The ADUM141D0BRQZ implements four independent unidirectional CMOS-isolated channels using monolithic air-core transformers, ensuring dc-correct output states 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 per side.

It features two enable inputs (VE1, VE2) for channel grouping control and supports fail-safe output states (high or low) during input-side power loss. The device complies with DIN EN IEC 60747-17 (VDE 0884-17), UL 1577, and IEC 60601-1, targeting medical and industrial safety-critical systems.

Key Specifications

Pinout & Package

ADUM141D0BRQZ is housed in a RoHS-compliant 16-lead QSOP (RQ-16) package with gull-wing leads, 1.27 mm pitch, and 1.75 mm body height. Pin 1 is marked by a dot; the package provides 3.5 mm minimum creepage and clearance between input and output sides.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADUM141D0BRQZ, ADUM141D0BRIZ trades compact QSOP packaging for wider SOIC creepage, while SI8641ED-B-IS sacrifices AEC-Q100 and VDE 0884-17 compliance to achieve higher isolation voltage-making ADUM141D0BRQZ optimal for space-constrained, safety-certified automotive and medical designs.

Availability

ADUM141D0BRQZ is available at Aetrix Electronics and suitable for industrial motor drives, medical imaging power supplies, automotive battery management systems, and industrial field bus nodes requiring stable component supply and long-term lifecycle support.

Supply support for ADUM141D0BRQZ 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 ADuM141D series belongs to Analog Devices' iCoupler® digital isolator product line, engineered specifically for high-speed, low-power, safety-certified galvanic isolation in harsh electromagnetic environments.

FAQ

What is the maximum guaranteed data rate for ADUM141D0BRQZ?

The ADUM141D0BRQZ guarantees a maximum data rate of 150 Mbps across all operating voltages (1.8 V to 5 V) and temperatures (−40°C to +125°C), validated under CL = 15 pF load and CMOS signal levels. This rate is maintained with pulse width distortion <3 ns and jitter <490 ps p-p at 5 V, making it suitable for high-speed SPI, RS-485, and digital power control applications. Higher rates may function but are not production-guaranteed.

Does ADUM141D0BRQZ support level translation between different supply voltages?

Yes, ADUM141D0BRQZ supports true bidirectional level translation: VDD1 can operate from 1.8 V to 5 V independently of VDD2, which also ranges from 1.8 V to 5 V. For example, it can interface a 1.8 V FPGA I/O bank to a 3.3 V microcontroller SPI peripheral while preserving signal integrity and timing. Input thresholds scale with respective VDD, and output drive strength adapts to VDD2, eliminating external level shifters.

What fail-safe output options does ADUM141D0BRQZ provide?

ADUM141D0BRQZ offers selectable fail-safe output states: outputs transition to a pre-determined logic high or low when VDD1 is unpowered or inputs are disabled via DISABLE1. This behavior is factory-configured per variant (D0 = fail-safe low; D1 = fail-safe high). For ADUM141D0BRQZ, the "D0" suffix confirms fail-safe low operation-critical for preventing unintended activation in motor control or power supply feedback paths during brownout.

Is ADUM141D0BRQZ qualified for automotive applications?

Yes, ADUM141D0BRQZ is AEC-Q100 qualified (Grade 1, −40°C to +125°C) and rated for automotive powertrain and battery management systems. It meets stringent reliability requirements including HTOL, TC, and ESD testing per AEC-Q100 Rev H. Its 3.0 kV_RMS isolation, 100 kV/µs CMTI, and VDE 0884-17 certification further validate suitability for ISO 26262 ASIL-B–compliant subsystems.

How does the enable functionality work on ADUM141D0BRQZ?

ADUM141D0BRQZ features two independent enable inputs: VE1 controls Channels A/B, and VE2 controls Channels C/D. Both are active-high; asserting VE1 low places VOA/VOB in high-impedance, while VE2 low disables VOC/VOD. VE1 has an internal pull-down; VE2 has an internal pull-up to VDD2. This allows flexible channel grouping-for instance, enabling only A/B for sensor readout while holding C/D in tri-state during MCU sleep mode.