Analog Devices Inc. ADUM2401ARWZ

Overview

ADUM2401ARWZ from Analog Devices is a quad-channel digital isolator using iCoupler® transformer-based isolation technology, providing bidirectional signal transmission across a reinforced 5000 V_rms isolation barrier. It supports 3 V/5 V level translation, operates up to 105°C, and delivers 1 Mbps data rate with ≤100 ns propagation delay and ≤40 ns pulse width distortion in the ARWZ grade. It is used in isolated communication interfaces for motor drive gate drivers and medical sensor front-ends.

For engineers reviewing the ADUM2401ARWZ datasheet, ADUM2401ARWZ pinout, ADUM2401ARWZ application, or ADUM2401ARWZ equivalent, this page provides verified specifications, package mapping to SOIC-16 wide-body (RW-16), functional channel configuration (3/1 directional split), safety certifications (UL 1577, VDE 0884-17), and real-world design context for high-noise industrial and regulated medical systems.

Technical Context

The ADUM2401ARWZ implements three unidirectional channels (A–C) and one bidirectional channel (D), enabling asymmetric I/O routing across the isolation barrier. Its monolithic air-core transformer architecture eliminates LED aging and CTR drift, supporting stable DC-correct operation via patented refresh circuitry during idle or power-transition states.

It features independent VDD1/VDD2 supplies (2.7–5.5 V each), allowing true 3 V/5 V level translation without external logic buffers. The device guarantees <40 ns pulse width distortion and <50 ns channel-to-channel skew at 1 Mbps, meeting timing-critical requirements in isolated ADC sampling clocks and PWM feedback loops.

Key Specifications

Pinout & Package

ADUM2401ARWZ is housed in a 16-lead SOIC wide-body package (RW-16), 10.3 mm × 7.5 mm footprint, 2.34 mm height, with creepage/clearance ≥8.3 mm. Pinout conforms to standard ADuM240x layout with dedicated VDD1/VDD2, GND1/GND2, and channel-specific I/O terminals.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SI8641ED-B-IS and ISO6741-Q1, the ADUM2401ARWZ uniquely combines UL/VDE-reinforced isolation, 105°C operation, and 3 V/5 V translation in a single quad-channel device-making it the only option qualified for both Class I medical and high-temperature industrial deployments without derating.

Availability

ADUM2401ARWZ is available at Aetrix Electronics and suitable for industrial motor drives, medical patient monitoring systems, and programmable logic controller I/O modules requiring stable component supply, long-term lifecycle assurance, and certified reinforced isolation.

Supply support for ADUM2401ARWZ 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 ADuM240x family was designed specifically for high-reliability, multi-channel digital isolation in safety-critical systems where optocoupler limitations-CTR degradation, speed bottlenecks, and temperature sensitivity-must be eliminated.

FAQ

What is the channel configuration of ADUM2401ARWZ?

The ADUM2401ARWZ has a fixed 3/1 channel configuration: three unidirectional channels (A–C) and one bidirectional channel (D). This differs from ADUM2400ARWZ (4× unidirectional) and ADUM2402ARWZ (2× unidirectional + 2× bidirectional). The ADUM2401ARWZ pinout and truth table confirm this arrangement, and its ordering code '01' explicitly denotes the 3/1 topology.

Does ADUM2401ARWZ support mixed 3 V/5 V operation?

Yes, ADUM2401ARWZ supports true mixed-voltage operation: VDD1 may be 3.3 V while VDD2 is 5 V (or vice versa), enabling seamless level translation without external components. Electrical characteristics tables in the Rev. H datasheet specify performance for both 5 V/3 V and 3 V/5 V configurations, including input thresholds (VIH = 2.0 V or 1.6 V depending on supply) and output drive capability.

What safety certifications apply to ADUM2401ARWZ?

ADUM2401ARWZ holds UL 1577 (5000 V_rms/1 min), DIN EN IEC 60747-17 (VDE 0884-17), IEC/EN/CSA 62368-1, IEC/CSA 60601-1, and IEC/CSA 61010-1 certifications. These apply to the RW-16 package variant and are documented in the "Regulatory Information" section of the official Analog Devices datasheet Rev. H.

Can ADUM2401ARWZ replace optocouplers in existing designs?

Yes, ADUM2401ARWZ can replace quad optocouplers (e.g., PS2561-4) in most cases due to its SOIC-16 pin-compatible footprint, identical creepage/clearance, and superior specs: 10× lower power, no CTR drift, guaranteed timing, and 105°C operation. However, verify that the 3/1 channel split matches your signal routing - unlike generic optocouplers, ADUM2401ARWZ channel directionality is fixed and non-reconfigurable.

What is the maximum data rate supported by ADUM2401ARWZ?

The ADUM2401ARWZ (ARWZ grade) supports a maximum data rate of 1 Mbps, with timing parameters (pulse width distortion ≤40 ns, propagation delay ≤100 ns) fully guaranteed at that rate. Higher-speed variants exist (BRWZ = 10 Mbps, CRWZ = 90 Mbps), but the 'A' suffix in ADUM2401ARWZ explicitly denotes the 1 Mbps grade per the Analog Devices ordering guide.