Analog Devices Inc. ADUM140E1WBRWZ

Overview

ADUM140E1WBRWZ from Analog Devices is a quad-channel digital isolator based on iCoupler® transformer technology, providing 3.0 kV_RMS galvanic isolation for signal integrity in high-noise industrial and automotive systems. It delivers 150 Mbps data rate, 13 ns max propagation delay at 5 V, 100 kV/µs common-mode transient immunity, and operates across 1.8 V to 5 V supply rails with fail-safe high output configuration.

For engineers reviewing the ADUM140E1WBRWZ datasheet, ADUM140E1WBRWZ pinout, ADUM140E1WBRWZ application, or ADUM140E1WBRWZ equivalent, this page provides verified specifications, SOIC_W package layout, AEC-Q100 qualification status, voltage translation capability, and real-world use cases in SPI isolation and field bus interfaces.

Technical Context

The ADUM140E1WBRWZ 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), enabling level translation across the isolation barrier while maintaining tight channel matching (≤3.0 ns codirectional skew).

It integrates undervoltage lockout (UVLO) with 1.6 V turn-on threshold and 0.1 V hysteresis per side, plus dedicated enable/disable inputs (VE2, DISABLE1) for power-gated operation. Safety compliance includes UL 1577 (3000 V_RMS/1 min), DIN EN IEC 60747-17 (VDE 0884-17), and IEC 60601-1 for medical applications.

Key Specifications

Pinout & Package

ADUM140E1WBRWZ uses a 16-lead, RoHS-compliant wide-body SOIC (SOIC_W, RW-16) package with 7.8 mm creepage and clearance, optimized for reinforced insulation in high-voltage systems.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADUM140E0WBRWZ, ADUM140E1WBRWZ provides fail-safe high output essential for safety shutdown circuits, while SI8641ED-IS offers higher isolation voltage but lacks automotive qualification and exhibits greater timing uncertainty-making ADUM140E1WBRWZ the optimal choice for AEC-Q100-compliant, high-integrity signal isolation.

Availability

ADUM140E1WBRWZ is available at Aetrix Electronics and suitable for industrial motor drives, automotive battery management systems, and isolated data converter interfaces requiring stable component supply, long-term lifecycle support, and AEC-Q100-qualified parts.

Supply support for ADUM140E1WBRWZ 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 ADuM140x series belongs to Analog Devices' iCoupler® digital isolator product line, designed specifically for replacing optocouplers in high-reliability, high-speed, and safety-critical isolation applications where longevity, timing precision, and regulatory compliance are mandatory.

FAQ

What is the isolation voltage rating of ADUM140E1WBRWZ?

ADUM140E1WBRWZ has a rated dielectric insulation voltage of 3000 V_RMS for 1 minute, certified to UL 1577, DIN EN IEC 60747-17 (VDE 0884-17), and IEC 60950-1. This applies to its RW-16 wide-body SOIC package, which provides 7.8 mm creepage and clearance distances for reinforced insulation in industrial and automotive systems.

Does ADUM140E1WBRWZ support level translation between different supply voltages?

Yes, ADUM140E1WBRWZ 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. This allows direct interfacing between low-voltage processors (e.g., 1.8 V FPGA I/O) and higher-voltage peripherals (e.g., 5 V ADCs or transceivers) without external level-shifting circuitry.

What fail-safe behavior does ADUM140E1WBRWZ exhibit during power loss?

ADUM140E1WBRWZ is configured for fail-safe high output: when VDD1 or VDD2 is unpowered or below UVLO threshold (1.5 V), all outputs (OUTA–OUTD) transition to and hold a logic high state. This behavior is hardwired and does not require external pull-ups, making it suitable for safety interlock and emergency stop circuits.

Is ADUM140E1WBRWZ qualified for automotive applications?

Yes, ADUM140E1WBRWZ is AEC-Q100 qualified for Grade 1 (−40°C to +125°C ambient), with full temperature-range validation of timing, isolation, and reliability parameters. It meets automotive requirements for battery management systems, motor control units, and charging infrastructure where functional safety and long-term stability are critical.

How does ADUM140E1WBRWZ compare to optocouplers in terms of performance?

ADUM140E1WBRWZ outperforms traditional optocouplers with 150 Mbps data rate (vs. typically <10 Mbps), 13 ns propagation delay (vs. >100 ns), zero CTR degradation over time, and guaranteed 50-year lifetime at 125°C. Its iCoupler® technology eliminates LED aging, provides precise channel matching (<3 ns skew), and ensures dc correctness without input toggling-critical for watchdog and status monitoring functions.