Analog Devices Inc. ADUM131D0BRWZ

Overview

ADUM131D0BRWZ from Analog Devices is a triple-channel digital isolator based on iCoupler® transformer technology, providing reinforced galvanic isolation between microcontroller SPI interfaces and high-voltage motor drives or industrial field buses. 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. Used in isolated SPI communication for PLC I/O modules.

For engineers reviewing the ADUM131D0BRWZ datasheet, ADUM131D0BRWZ pinout, ADUM131D0BRWZ application, or ADUM131D0BRWZ equivalent, key selection criteria include its 3.75 kV_RMS isolation rating (RW-16 SOIC_W package), fail-safe low output option, 1.8 V–5 V level translation capability, and compliance with IEC 60601-1 (2 MOPP) and DIN EN IEC 60747-17 (VDE 0884-17).

Technical Context

The ADUM131D0BRWZ implements three independent unidirectional CMOS-isolated channels using monolithic air-core transformers, enabling dc-correct signal transmission without input toggling. Its architecture supports asymmetric supply operation (e.g., 1.8 V side A / 5 V side B) and includes integrated undervoltage lockout (1.5 V/1.6 V thresholds) and tristate enable control.

Unlike optocouplers, it guarantees deterministic fail-safe behavior-outputs default to logic low when input power is absent or DISABLE1 is asserted. Channel matching is ≤3.0 ns (codirectional), and jitter is as low as 90 ps_rms at 1.8 V operation, supporting timing-critical serial protocols.

Key Specifications

Pinout & Package

RW-16 wide-body SOIC package (10.3 mm × 7.6 mm, 1.27 mm pitch), RoHS compliant, with creepage/clearance ≥7.8 mm for reinforced insulation.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADUM131D0BRWZ, the ADUM131D1BRWZ offers identical performance except inverted fail-safe polarity-critical for safety interlock logic-while the SI8631BB-B-IS trades CMTI and low-voltage support for higher isolation voltage and lower unit cost in less demanding environments.

Availability

ADUM131D0BRWZ is available at Aetrix Electronics and suitable for industrial PLCs, motor drive control boards, medical imaging subsystems, and isolated data acquisition systems requiring stable component supply and long-term lifecycle assurance.

Supply support for ADUM131D0BRWZ 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 precision instrumentation, industrial automation, and healthcare markets.

The ADuM131D series belongs to Analog Devices' iCoupler® digital isolator product line, engineered specifically for robust, low-jitter, multi-channel galvanic isolation in safety-critical industrial and medical systems where optocoupler limitations-aging, temperature drift, and speed constraints-are unacceptable.

FAQ

What is the isolation voltage rating of the ADUM131D0BRWZ?

The ADUM131D0BRWZ has a rated dielectric insulation voltage of 3750 V_RMS for 1 minute, verified per UL 1577 and DIN EN IEC 60747-17 (VDE 0884-17). Its reinforced insulation supports 2 MOPP per IEC 60601-1, with VIORM = 565 V_PEAK and minimum creepage/clearance of 7.8 mm in the RW-16 SOIC_W package. This rating applies to the ADUM131D0BRWZ device specifically, not the broader family.

Does the ADUM131D0BRWZ support 1.8 V logic on both sides?

Yes, the ADUM131D0BRWZ supports independent 1.8 V to 5 V supplies on both VDD1 and VDD2 rails. At 1.8 V operation, it maintains 150 Mbps data rate, 15 ns max propagation delay, and 90 ps_rms jitter. This dual-voltage capability enables direct interfacing between ultra-low-power microcontrollers and legacy 3.3 V or 5 V peripherals without external level shifters-confirmed in Tables 7 and 8 of the ADUM131D0BRWZ datasheet.

What is the fail-safe behavior of the ADUM131D0BRWZ?

The ADUM131D0BRWZ features a fail-safe low output configuration: when VDD1 is unpowered or DISABLE1 is asserted high, all three outputs (OUTA/OUTB/OUTC) transition to and hold logic low. This behavior is intrinsic to the D0 variant and ensures safe deactivation of downstream power stages-such as IGBT gate drivers-in fault conditions. The ADUM131D0BRWZ datasheet explicitly defines this in the General Description and Ordering Guide sections.

How does the ADUM131D0BRWZ compare to optocouplers in terms of timing performance?

The ADUM131D0BRWZ achieves 13 ns max propagation delay and <3 ns pulse width distortion at 5 V, far exceeding typical optocouplers (often >100 ns delay, >20 ns PWD). Its channel-to-channel matching is ≤3.0 ns, enabling precise timing in multi-channel SPI or encoder interfaces. Unlike optocouplers, it guarantees dc correctness-no input toggling needed to maintain output state-making it suitable for static control signals in industrial safety systems.

Is the ADUM131D0BRWZ pin-compatible with other ADuM13xx devices?

The ADUM131D0BRWZ uses the RW-16 SOIC_W footprint and shares identical pinout with ADUM131D1BRWZ and ADUM131E0BRWZ. However, it is not pin-compatible with R-16 narrow-body variants (e.g., ADUM131D0BRZ) due to different package dimensions and creepage requirements. Pin compatibility is confirmed in the Pin Configurations section of the ADUM131D0BRWZ datasheet, Figure 3 and Table 16.