Analog Devices Inc. ADUM141D1BRZ

Overview

ADUM141D1BRZ from Analog Devices is a quad-channel digital isolator based on iCoupler® technology, providing 3.0 kV_RMS galvanic isolation between two independent 1.8 V–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 - enabling robust SPI and data converter isolation in industrial motor drives.

For engineers reviewing the ADUM141D1BRZ datasheet, ADUM141D1BRZ pinout, ADUM141D1BRZ application, or ADUM141D1BRZ equivalent, this page provides verified specifications, SOIC-16 pin mapping, fail-safe output behavior, AEC-Q100 qualification status, and real-world design implications for noise-critical isolated interfaces.

Technical Context

The ADUM141D1BRZ implements four independent unidirectional CMOS-isolated channels using monolithic air-core transformers, ensuring dc-correct output states without input transitions. Its dual-supply architecture supports asymmetric voltage operation (e.g., 1.8 V side A / 3.3 V side B), enabling level translation across the isolation barrier.

It features programmable fail-safe outputs (high or low on power loss), integrated undervoltage lockout (1.5 V/1.6 V thresholds), and tight channel matching (≤3.0 ns codirectional skew). The device complies with DIN EN IEC 60747-17 (VDE 0884-17) for reinforced insulation and meets UL 1577, CSA, and IEC 60601-1 safety standards.

Key Specifications

Pinout & Package

ADUM141D1BRZ is housed in a RoHS-compliant 16-lead narrow-body SOIC package (R-16, JEDEC MS-012AA), with 4.0 mm creepage/clearance and 3000 V_RMS withstand rating. Pin 1 is marked by a dot; the package is lead-free and halogen-free.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADUM141E1BRZ, the ADUM141D1BRZ trades minor skew and ESD margin for cost-sensitive volume production; versus SI8641ED-B-IS, it provides guaranteed fail-safe behavior and extended temperature range essential for automotive BMS and industrial servo drives.

Availability

ADUM141D1BRZ is available at Aetrix Electronics and suitable for industrial motor drives, energy metering systems, and automotive battery management requiring stable component supply with long-term lifecycle assurance.

Supply support for ADUM141D1BRZ 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 ADuM141x family was designed specifically for high-reliability, multi-channel isolation in safety-critical systems - emphasizing low jitter, fail-safe operation, and regulatory compliance for medical, industrial, and automotive end equipment.

FAQ

What is the maximum guaranteed data rate for ADUM141D1BRZ?

The ADUM141D1BRZ guarantees a maximum data rate of 150 Mbps across all four channels under specified conditions (CL = 15 pF, CMOS levels, TA = −40°C to +125°C). This is validated in the datasheet's Electrical Characteristics tables for 1.8 V, 2.5 V, 3.3 V, and 5 V operation. Higher rates may be achievable but are not production-tested or warranted. The ADUM141D1BRZ maintains timing integrity at this rate due to its <3 ns pulse width distortion and matched channel propagation.

Does ADUM141D1BRZ support level translation between different supply voltages?

Yes, ADUM141D1BRZ supports true bidirectional level translation: VDD1 and VDD2 can operate independently from 1.8 V to 5 V. For example, inputs on side 1 can be driven by a 1.8 V MCU while outputs on side 2 interface with a 3.3 V ADC - all within a single ADUM141D1BRZ. This eliminates external level shifters and reduces BOM count. Input thresholds scale with VDDx (VIH = 0.7×VDDx), and output drive strength adapts accordingly.

What safety certifications apply to ADUM141D1BRZ?

ADUM141D1BRZ carries UL 1577 (3000 V_RMS/1 min), CSA and IEC/EN 60950-1, IEC/CSA 60601-1 (medical), and IEC/CSA 61010-1 (test equipment) approvals. It also meets DIN EN IEC 60747-17 (VDE 0884-17) for reinforced insulation, with VIORM = 565 V_PEAK. These certifications are explicitly listed in the datasheet's Regulatory Information section and validated for the R-16 SOIC package used in ADUM141D1BRZ.

How does the fail-safe output function work on ADUM141D1BRZ?

ADUM141D1BRZ offers configurable fail-safe outputs that transition to a pre-determined logic state (high or low) when the input-side supply (VDD1) is removed or disabled. This behavior is implemented via internal circuitry that monitors VDD1 UVLO (1.5 V threshold) and forces outputs to the selected state without external components. The specific fail-safe polarity is fixed per variant - ADUM141D1BRZ is the "D1" version, meaning outputs go low on VDD1 loss. This prevents undefined control signals in safety-critical paths.

Is ADUM141D1BRZ pin-compatible with earlier ADuM140x series isolators?

No, ADUM141D1BRZ is not pin-compatible with ADuM1400/ADuM1401/ADuM1402. However, the ADuM141E1/ADuM142E1 variants are explicitly stated as pin-compatible with those older parts. ADUM141D1BRZ belongs to the D-series, which uses a different pinout optimized for enhanced noise immunity and fail-safe behavior. Engineers migrating from ADuM140x must verify PCB layout compatibility and consult the Pin Configurations section of Rev. K datasheet before substitution.