Analog Devices Inc. ADUM5401CRWZ-RL

Overview

ADUM5401CRWZ-RL from Analog Devices is a quad-channel digital isolator with integrated isoPower® dc-to-dc converter, providing 2.5 kV rms reinforced isolation, 500 mW isolated output power at 5 V, and 25 Mbps data rate per channel. It operates across −40°C to +105°C and delivers regulated 5.0 V isolated supply from a 5.0 V input - eliminating external isolated power supplies in industrial PLCs and RS-485 transceiver interfaces.

For engineers reviewing the ADUM5401CRWZ-RL datasheet, ADUM5401CRWZ-RL pinout, ADUM5401CRWZ-RL application, or ADUM5401CRWZ-RL equivalent, this page delivers verified specifications, functional pin mapping, safety-certified insulation parameters, real-world application context for fieldbus isolation, and validated alternative part comparisons - all grounded in Rev. E datasheet data and official Analog Devices documentation.

Technical Context

The ADUM5401CRWZ-RL implements iCoupler® chip-scale transformer technology for both signal isolation and isolated power transfer, integrating a high-frequency PWM-controlled dc-to-dc converter (625 kHz) with on-chip rectification and regulation. Its architecture supports bidirectional logic-level translation across the isolation barrier with independent input/output supply domains (VDD1/GND1 and VISO/GNDISO).

It features four unidirectional channels (VIA/VOA, VIB/VOB, VIC/VOC, VID/VOD), fixed input-to-output directionality per channel, and built-in undervoltage lockout (2.4 V/2.7 V thresholds) on all supply rails. The device meets IEC 60747-5-2 (VDE 0884-2) reinforced insulation requirements with VIORM = 560 V peak and 7.6 mm creepage.

Key Specifications

Pinout & Package

ADUM5401CRWZ-RL uses a 16-lead SOIC wide-body package (RW-16) with 7.6 mm minimum creepage distance between input and output sides. Pin 1 is marked with dot; pins 1–8 form the primary (input) side; pins 9–16 form the secondary (output/isolated) side.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar quad-channel isolated power applications.

Compared with ADUM5401CRWZ-RL, the A-grade ADUM5401ARWZ-RL trades speed for lower power and cost, while SI8641ED-B-IS offers higher data rate and isolation rating but shifts power design complexity to external components - making ADUM5401CRWZ-RL optimal for compact, self-contained isolated interfaces needing up to 25 Mbps and 500 mW.

Availability

ADUM5401CRWZ-RL is available at Aetrix Electronics and suitable for industrial PLCs, RS-485 transceiver interfaces, and isolated sensor signal chains requiring stable component supply, long-term lifecycle assurance, and certified reinforced insulation.

Supply support for ADUM5401CRWZ-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, headquartered in Norwood, MA.

The ADuM540x family belongs to Analog Devices' iCoupler® digital isolator product line, engineered specifically for industrial automation, energy infrastructure, and medical systems requiring integrated isolated power and high-reliability signal transmission.

FAQ

What is the maximum isolated output power of the ADUM5401CRWZ-RL?

The ADUM5401CRWZ-RL delivers up to 500 mW of regulated isolated output power at 5.0 V when supplied with a 5.0 V input. This is confirmed in Table 1 of the Rev. E datasheet under "5 V Primary Input Supply/5 V Secondary Isolated Supply" conditions. The actual available load current is 100 mA, and efficiency reaches 34% at full load. This power level is sufficient to drive multiple downstream ICs such as RS-485 transceivers or ADC reference buffers without external DC/DC converters.

Does the ADUM5401CRWZ-RL support 3.3 V isolated output?

Yes, the ADUM5401CRWZ-RL supports 3.3 V isolated output by connecting the VSEL pin to GNDISO. In this configuration, it delivers up to 330 mW from a 5.0 V input or 200 mW from a 3.3 V input, as specified in Table 1. The output regulation remains tight (±5%), and all timing and isolation specifications remain valid. This flexibility allows the ADUM5401CRWZ-RL to interface directly with 3.3 V logic families without level shifters.

What safety certifications apply to the ADUM5401CRWZ-RL?

The ADUM5401CRWZ-RL holds UL recognition (2500 V rms per UL 1577), CSA Component Acceptance Notice 5A, VDE certification to IEC 60747-5-2 (VIORM = 560 V peak), and CQC certification per GB4943.1-2011. These are documented in Table 15 of the Rev. E datasheet. The device is rated for reinforced insulation and supports working voltages up to 420 V rms in tropical climates - enabling direct use in Class I medical and industrial safety-critical applications without additional certification overhead.

Can the ADUM5401CRWZ-RL replace optocoupler-based isolation solutions?

Yes, the ADUM5401CRWZ-RL is a drop-in replacement for quad-channel optocoupler + isolated DC/DC combinations in many industrial designs. Unlike optocouplers, it offers guaranteed 25 Mbps data rate, zero LED aging, 100-year insulation lifetime (per IEC 60747-5-2), and integrated 500 mW power. Its 16-pin SOIC footprint matches common optocoupler packages, and its propagation delay (45–60 ns) is significantly lower than typical optocouplers (>100 ns). However, PCB layout must follow AN-0971 guidelines to manage EMI from the internal switching regulator.

What is the recommended decoupling for the ADUM5401CRWZ-RL VISO pin?

Analog Devices specifies a parallel 0.1 μF ceramic capacitor and 10 μF bulk capacitor (tantalum or aluminum electrolytic) directly at the VISO pin, as stated in Table 2 (Output Ripple test condition) and Figure 24 of the Rev. E datasheet. This dual-capacitor network suppresses both high-frequency switching noise (from the 625 kHz PWM) and low-frequency load transients. Failure to implement this decoupling increases output ripple beyond the 75 mV p-p spec and may cause instability in downstream logic powered by VISO.