Analog Devices Inc. ADUM4402ARIZ

Overview

ADUM4402ARIZ from Analog Devices is a 5 kV_RMS quad-channel digital isolator using iCoupler® transformer-based technology, providing bidirectional signal isolation across two independent voltage domains (3.0–5.5 V on each side), with up to 90 Mbps data rate, <2 ns pulse width distortion, and 645 V_PEAK reinforced insulation rating. It serves as a high-reliability replacement for optocouplers in medical safety-critical interfaces and motor drive gate driver feedback loops.

For engineers reviewing the ADUM4402ARIZ datasheet, ADUM4402ARIZ pinout, ADUM4402ARIZ application, or ADUM4402ARIZ equivalent, this page delivers verified specifications, SOIC-16 RW-16 package mapping, channel-level enable control behavior, IEC 60747-17 (VDE 0884-17) compliance evidence, and real-world design implications of its 25 kV/µs CMTI and 3.3/5 V level translation capability.

Technical Context

The ADUM4402ARIZ implements four independent unidirectional channels with side-specific output enable (VE1 on Side 1, VE2 on Side 2), supporting mixed-voltage operation (e.g., 3.3 V logic input / 5 V output). Its air-core transformer isolation architecture eliminates LED aging and timing drift inherent in optocouplers.

Each channel features a patented refresh circuit ensuring DC correctness during idle periods and power transitions, plus an input glitch filter for noise immunity. Propagation delay skew is ≤2 ns (C grade), and common-mode transient immunity exceeds 25 kV/µs - critical for gate driver feedback in high-dV/dt motor inverters.

Key Specifications

Pinout & Package

ADUM4402ARIZ uses a 16-lead SOIC wide-body package (RW-16) with 7.8 mm minimum creepage/clearance, rated for reinforced insulation per IEC 60747-17. Pin 1 is located at the top-left corner with dot marking; pins 1–8 form Side 1 (input side), pins 9–16 form Side 2 (output side), with dual ground and supply pins per side.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SI8642ED-IS and ISO7742FDR, ADUM4402ARIZ offers deterministic DC correctness via refresh circuitry and dedicated VE2 control - critical for fail-safe shutdown signaling in motor drives and medical devices where indefinite signal retention matters more than peak bandwidth.

Availability

ADUM4402ARIZ is available at Aetrix Electronics and suitable for motor drive feedback, medical data acquisition, industrial PLC I/O, and renewable energy inverter control requiring stable component supply, long-term lifecycle support, and certified reinforced insulation.

Supply support for ADUM4402ARIZ 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 since 1965.

The ADuM440x family was designed specifically to replace optocouplers in safety-critical, high-noise, and thermally demanding applications - delivering superior timing accuracy, reliability, and regulatory compliance through iCoupler® transformer isolation.

FAQ

What is the maximum data rate supported by ADUM4402ARIZ?

ADUM4402ARIZ supports a maximum data rate of 90 Mbps in NRZ format. This specification applies to the C-grade version under recommended operating conditions (−40°C to +105°C, VDD = 3.3 V or 5 V). At lower speeds (e.g., 10 Mbps), it achieves 7.5 mA per side supply current at 3.3 V, making it suitable for high-fidelity SPI or UART isolation where timing precision outweighs raw bandwidth.

Does ADUM4402ARIZ support level translation between 3.3 V and 5 V domains?

Yes, ADUM4402ARIZ supports true bidirectional level translation: Side 1 can operate at 3.0–5.5 V independently from Side 2, which also accepts 3.0–5.5 V. For example, it can accept 3.3 V logic inputs on Side 1 while driving 5 V CMOS outputs on Side 2 - enabling seamless interface between low-voltage microcontrollers and higher-voltage peripheral ICs without external level shifters.

What safety certifications apply to ADUM4402ARIZ?

ADUM4402ARIZ holds UL 1577 (5000 V_RMS), IEC/EN/CSA 62368-1, IEC/CSA 60601-1 (2 MOPP), IEC/CSA 61010-1, CQC GB 4943.1, and DIN EN IEC 60747-17 (VDE 0884-17) approvals. Its RW-16 package is certified for reinforced insulation with VIORM = 645 V_PEAK, meeting stringent medical and industrial safety standards without additional external components.

How does the output enable (VE2) function work on ADUM4402ARIZ?

VE2 is an active-high enable input on Side 2: when VE2 = high or open, VOA–VOD outputs reflect VIA–VID inputs; when VE2 = low, all four outputs enter high-impedance state. This allows safe bus sharing in multi-master systems and controlled power-up sequencing - for instance, holding motor gate drivers inactive until MCU firmware confirms safe startup conditions before asserting VE2.

What is the common-mode transient immunity (CMTI) rating for ADUM4402ARIZ?

ADUM4402ARIZ has a guaranteed minimum CMTI of 25 kV/µs, tested per IEC 61000-4-4 with 800 V transient magnitude superimposed on 1000 V common-mode voltage. This performance is essential in motor drives and inverters where fast-switching power devices induce large dV/dt across isolation barriers - preventing false logic transitions that could cause catastrophic shoot-through faults.