Analog Devices Inc. ADUM240D1BRIZ

Overview

ADUM240D1BRIZ from Analog Devices is a quad-channel digital isolator based on iCoupler® technology, providing 5.0 kV_rms reinforced insulation, 150 Mbps guaranteed data rate, and 13 ns max propagation delay at 5 V operation. It supports 1.8 V to 5 V level translation across the isolation barrier and operates up to 125°C, enabling use in industrial SPI isolation and high-noise motor control interfaces.

For engineers reviewing the ADUM240D1BRIZ datasheet, ADUM240D1BRIZ pinout, ADUM240D1BRIZ application, or ADUM240D1BRIZ equivalent, key selection criteria include its SOIC_W (RW-16) package with 7.8 mm creepage/clearance, fail-safe high output option, and compliance with UL 1577, DIN EN IEC 60747-17 (VDE 0884-17), and IEC 60601-1 for medical-grade isolation.

Technical Context

The ADUM240D1BRIZ implements four independent unidirectional channels using monolithic air-core transformer coupling, 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 timing in isolated ADC/DAC interfaces.

It features dual supply domains (VDD1/VDD2), each supporting 1.8–5 V operation, with integrated undervoltage lockout (1.5 V/1.6 V thresholds) and high common-mode transient immunity (100 kV/µs). The device is configured as a 4-channel forward-direction isolator with fail-safe high outputs and no enable/disable pins.

Key Specifications

Pinout & Package

ADUM240D1BRIZ uses a 16-lead RoHS-compliant SOIC_W (RW-16) wide-body 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 quad-channel digital isolator applications.

Compared with ADUM240D0BRIZ and SI8641ED-B-IS, ADUM240D1BRIZ offers superior timing precision (13 ns vs. 15 ns), guaranteed VDE 0884-17 certification with partial discharge testing, and fail-safe high behavior essential for safety-critical enable paths in motor drives and medical power supplies.

Availability

ADUM240D1BRIZ is available at Aetrix Electronics and suitable for industrial motor control, medical imaging power interfaces, and programmable logic controller (PLC) digital I/O requiring stable component supply and long-term lifecycle support.

Supply support for ADUM240D1BRIZ 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 ADUM240D1BRIZ belongs to the ADuM240x family of iCoupler® digital isolators, designed specifically for high-reliability, high-speed, reinforced-isolation applications in safety-critical systems including medical equipment and industrial automation.

FAQ

What is the fail-safe output behavior of ADUM240D1BRIZ?

The ADUM240D1BRIZ features a fail-safe high output configuration: when either VDD1 or VDD2 is unpowered, or when all inputs are disabled, all four outputs (OUTA–OUTD) transition to and hold a logic-high state. This behavior is hardwired and does not require external pull-ups, making it ideal for enabling power stages or asserting safety interlocks during brownout conditions. The same fail-safe logic applies across the full −40°C to +125°C operating range.

Does ADUM240D1BRIZ support bidirectional communication?

No, ADUM240D1BRIZ is a unidirectional quad-channel isolator with fixed input-to-output direction (INA→OUTA, INB→OUTB, etc.). It does not support automatic direction sensing or half-duplex protocols like I²C. For bidirectional applications such as isolated UART or I²C, engineers must select variants like ADUM240E1BRIZ (which includes direction-control logic) or use two ADUM240D1BRIZ devices in opposing configurations. The D1 suffix explicitly denotes unidirectional forward operation.

What safety certifications apply to ADUM240D1BRIZ?

ADUM240D1BRIZ carries UL 1577 (5000 V_rms, 1 min), DIN EN IEC 60747-17 (VDE 0884-17) with partial discharge testing, IEC/CSA 60601-1 (2 MOPP), IEC/CSA 62368-1, and CQC GB 4943.1 approvals. Its RW-16 SOIC_W package provides 7.8 mm creepage and clearance, satisfying reinforced insulation requirements for medical and industrial equipment up to 250 V_rms working voltage per IEC 60601-1 Clause 8.8.2.

Can ADUM240D1BRIZ operate with mismatched supply voltages on each side?

Yes, ADUM240D1BRIZ fully supports independent VDD1 and VDD2 supplies ranging from 1.8 V to 5 V each. For example, it can translate 1.8 V logic from an FPGA I/O bank on VDD1 to 3.3 V logic for a microcontroller on VDD2, or interface 5 V industrial sensors to 2.5 V ADCs. Input thresholds scale with VDDx (VIH = 0.7×VDDx), and output drive strength adapts accordingly-no external level-shifting components are needed.

How does ADUM240D1BRIZ compare to optocouplers in terms of timing performance?

ADUM240D1BRIZ delivers significantly better timing performance than standard optocouplers: 13 ns maximum propagation delay (vs. 50–200 ns for typical optos), <3 ns pulse width distortion, and 3.0 ns maximum channel matching. Unlike optocouplers, it exhibits no temperature- or age-dependent parameter drift, and its transformer-based iCoupler® technology eliminates CTR degradation-ensuring consistent timing over 15+ years of operation in industrial environments.