Analog Devices Inc. ADUM2400ARIZ

Overview

ADUM2400ARIZ from Analog Devices is a quad-channel digital isolator based on iCoupler® transformer technology, providing galvanic isolation between microcontroller I/O and high-voltage motor drive or power supply control circuits. It supports bidirectional communication, 3 V/5 V level translation, operates up to 105°C, and delivers 90 Mbps data rate with <2 ns pulse width distortion and >25 kV/µs common-mode transient immunity.

For engineers reviewing the ADUM2400ARIZ datasheet, ADUM2400ARIZ pinout, ADUM2400ARIZ application, or ADUM2400ARIZ equivalent, this page provides verified specifications, package mapping (16-lead SOIC wide body, RI-16), safety certifications (UL 5000 Vrms, VDE 0884-17), channel configuration (4-channel, all forward), and real-world design context for industrial isolation use cases.

Technical Context

The ADUM2400ARIZ implements four independent unidirectional isolation channels using monolithic air-core transformers, eliminating LED/photodiode aging and CTR drift inherent in optocouplers. Its refresh circuit ensures DC correctness during idle periods and power transitions, and it supports asymmetric supply operation (e.g., 5 V primary / 3 V secondary) without external level shifters.

Timing performance is defined by propagation delay (18–32 ns typical at 90 Mbps), channel-to-channel matching (<2 ns for codirectional channels), and pulse width distortion (<2 ns), enabling precise synchronization in motor gate driver feedback loops and isolated ADC interfaces where skew-sensitive timing is critical.

Key Specifications

Pinout & Package

ADUM2400ARIZ is housed in a 16-lead SOIC wide-body package with enhanced creepage (RI-16), rated for 5000 V rms isolation and compliant with DIN EN IEC 60747-17 (VDE 0884-17).

Key Features

Applications

Equivalent & Alternatives

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

Compared with SI8640BB-B-IS and ISO6740QDR, ADUM2400ARIZ offers superior pulse width distortion control (<2 ns vs. ≥3 ns), higher certified isolation (5000 Vrms with VDE 0884-17), and guaranteed 90 Mbps operation - making it the preferred choice for safety-critical motor control and medical isolation where timing fidelity and regulatory compliance are non-negotiable.

Availability

ADUM2400ARIZ is available at Aetrix Electronics and suitable for motor drive control, medical data acquisition, industrial power supply monitoring, and PLC digital I/O isolation requiring stable component supply and long-term lifecycle support.

Supply support for ADUM2400ARIZ 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 is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets.

The ADuM2400 family is designed specifically for high-reliability, high-speed galvanic isolation in safety-critical systems - emphasizing low timing skew, robust common-mode immunity, and regulatory-compliant insulation architecture.

FAQ

What is the maximum data rate supported by ADUM2400ARIZ?

ADUM2400ARIZ supports a maximum data rate of 90 Mbps under NRZ encoding with guaranteed pulse width distortion ≤2 ns. This rating applies to the CRWZ grade variant and is validated across the full operating temperature range (−40°C to +105°C) and supply range (2.7 V to 5.5 V per side). The device maintains this performance with <2 ns channel-to-channel matching, making it suitable for high-speed SPI, isolated encoder interfaces, and real-time PWM feedback loops.

Does ADUM2400ARIZ support level translation between 3 V and 5 V domains?

Yes, ADUM2400ARIZ supports true bidirectional level translation: VDD1 and VDD2 can operate independently at any voltage between 2.7 V and 5.5 V, enabling direct interfacing between 3.3 V microcontrollers and 5 V industrial peripherals. Input thresholds adapt automatically (VIH = 2.0 V at 5 V supply, 1.6 V at 3 V supply), and output swing tracks the local supply rail - eliminating external level shifters in mixed-voltage systems.

What safety certifications does ADUM2400ARIZ hold?

ADUM2400ARIZ (RI-16 package) is certified to UL 1577 (5000 V rms for 1 minute), DIN EN IEC 60747-17 (VDE 0884-17), IEC/EN/CSA 62368-1, IEC/CSA 60601-1, IEC/CSA 61010-1, and CQC GB 4943.1. Its VIORM rating is 645 V peak, and it meets reinforced insulation requirements for medical (Class I) and industrial equipment. These certifications are specific to the RI-16 package and validated per manufacturer test reports.

How does the refresh feature in ADUM2400ARIZ ensure DC correctness?

The patented refresh circuit in ADUM2400ARIZ periodically samples the input state during static conditions and retransmits it across the isolation barrier, preventing data loss when input signals remain unchanged for extended periods. This ensures correct logic levels at power-up, power-down, and during idle states - a critical requirement for safety interlocks, enable signals, and fault-reporting lines where DC accuracy cannot rely on data transitions.

Can ADUM2400ARIZ replace optocouplers in existing designs without layout changes?

ADUM2400ARIZ uses a standard 16-lead SOIC wide-body footprint (RI-16) with 1.27 mm pitch, matching common optocoupler footprints like the HCPL-0723. However, pin functions differ: ADUM2400ARIZ has dedicated VDD1/GND1 and VDD2/GND2 pairs plus four unidirectional channels (A1–A4 → B1–B4), whereas most quad optocouplers use emitter-follower outputs. Direct replacement requires verifying signal directionality, enable logic, and power domain separation - not just pin count or package size.