Analog Devices Inc. ADUM242E0BRIZ-RL

Overview

ADUM242E0BRIZ-RL from Analog Devices is a quad-channel digital isolator using iCoupler® technology, providing 5.0 kV_rms reinforced insulation for high-noise industrial and medical systems. It delivers 150 Mbps data rate, 13 ns max propagation delay at 5 V, and operates across 1.8 V to 5 V supply rails with fail-safe low output configuration. It is used in isolated SPI interfaces for motor drives and PLC I/O modules.

For engineers reviewing the ADUM242E0BRIZ-RL datasheet, ADUM242E0BRIZ-RL pinout, ADUM242E0BRIZ-RL application, or ADUM242E0BRIZ-RL equivalent, key selection criteria include reinforced isolation rating (5.0 kV_rms), channel directionality (2/2 bidirectional), common-mode transient immunity (100 kV/µs), and automotive qualification per AEC-Q100.

Technical Context

The ADUM242E0BRIZ-RL implements two independent input channels and two independent output channels, with all four channels operating across an isolation barrier using monolithic air-core transformers. Its fail-safe low mode ensures outputs default to logic low when input power is absent or disabled.

It supports dual-supply operation (VDD1 and VDD2 independently configurable from 1.8 V to 5 V), enabling level translation between disparate voltage domains while maintaining precise timing-channel matching is ≤3.0 ns and pulse width distortion is ≤3 ns.

Key Specifications

Pinout & Package

ADUM242E0BRIZ-RL uses a 16-lead, RoHS-compliant SOIC_W (wide-body) package with creepage/clearance ≥7.8 mm, optimized for reinforced insulation. Input-side pins (1–8) and output-side pins (9–16) are physically segregated to maintain isolation integrity.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADUM242D0BRIZ-RL and SI8642ED-B-IS, ADUM242E0BRIZ-RL uniquely combines fail-safe low behavior, 100 kV/µs CMTI, and AEC-Q100 Grade 1 qualification-making it the only option for safety-critical automotive and medical designs requiring guaranteed low-state defaults under fault conditions.

Availability

ADUM242E0BRIZ-RL is available at Aetrix Electronics and suitable for industrial motor control, medical patient monitoring, automotive battery management, and isolated SPI data converter interfaces requiring stable component supply and long-term lifecycle support.

Supply support for ADUM242E0BRIZ-RL 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 ADuM242x series belongs to Analog Devices' iCoupler® digital isolator product line, designed specifically for high-reliability, high-CMTI isolation in safety-critical systems where optocoupler limitations-aging, speed, and power-must be overcome.

FAQ

What is the fail-safe output behavior of ADUM242E0BRIZ-RL?

ADUM242E0BRIZ-RL is configured as a fail-safe low device: when VDD1 is unpowered, DISABLE1 is asserted, or input signals are inactive, both OUTA and OUTB default to logic low. This behavior is hardwired in the silicon and does not require external pull-down resistors. The specification is verified across −40°C to +125°C and applies to all valid supply voltages (1.8 V–5 V) on either side.

Does ADUM242E0BRIZ-RL support level translation between different supply voltages?

Yes, ADUM242E0BRIZ-RL supports true bidirectional level translation: VDD1 and VDD2 can operate independently at any combination of 1.8 V, 2.5 V, 3.3 V, or 5 V. Input thresholds scale to 0.3×VDDx and 0.7×VDDx, and output VOH/VOL are referenced to their respective VDD. This eliminates external level-shifting components in mixed-voltage systems such as FPGA-to-ADC interfaces.

What safety certifications apply to ADUM242E0BRIZ-RL?

ADUM242E0BRIZ-RL is certified to UL 1577 (5.0 kV_rms), DIN EN IEC 60747-17 (VDE 0884-17, Reinforced Insulation, 849 V_peak), IEC/CSA 62368-1, IEC/CSA 60601-1 (2 MOPP), and IEC/CSA 61010-1. It carries CQC GB4943.1 and is AEC-Q100 Grade 1 qualified. All certifications apply to the RW-16 SOIC_W package variant.

How does ADUM242E0BRIZ-RL achieve DC correctness without input toggling?

ADUM242E0BRIZ-RL uses on-chip refresh circuitry that periodically samples and retransmits the last valid input state across the isolation barrier-even when inputs are static. This ensures outputs remain accurate indefinitely without requiring minimum data rates or periodic toggling, unlike optocouplers or some capacitive isolators that drift or time out.

What is the minimum recommended PCB creepage distance for ADUM242E0BRIZ-RL?

The RW-16 SOIC_W package of ADUM242E0BRIZ-RL requires ≥7.8 mm minimum creepage distance between input-side (pins 1–8) and output-side (pins 9–16) copper traces. This value satisfies IEC 62368-1 and IEC 60601-1 for pollution degree 2 and altitudes ≤2000 m. Layout must avoid solder mask slivers and ensure no conductive coating bridges the isolation barrier.