Analog Devices Inc. ADUM6402ARIZ

Overview

ADUM6402ARIZ from Analog Devices is a quad-channel digital isolator with integrated isoPower® DC-to-DC converter, delivering up to 400 mW isolated output power at 5 V or 3.3 V, supporting 25 Mbps NRZ data rates, and rated for 5 kV rms isolation (1 min). It operates across −40°C to +105°C and targets isolated RS-485 transceivers and medical sensor interfaces.

For engineers reviewing the ADUM6402ARIZ datasheet, ADUM6402ARIZ pinout, ADUM6402ARIZ application, or ADUM6402ARIZ equivalent, key selection criteria include its 16-lead SOIC wide-body (RW-16) package, Schmitt-triggered inputs, 25 kV/μs common-mode transient immunity, and dual-supply configuration (VDD1/VISO) enabling self-contained isolated power delivery without external transformers.

Technical Context

The ADUM6402ARIZ implements iCoupler® transformer-based isolation across four independent channels, with input-side logic signals (VIA–VID) mapped to output-side outputs (VOA–VOD) in a fixed A/B/C/D bidirectional pairing per Figure 4. Its isoPower core uses high-frequency switching (625 kHz PWM, 180 MHz oscillator) to transfer regulated power across the isolation barrier, requiring careful PCB layout per AN-0971 to meet emissions standards.

It supports three operating modes: 5 V input → 5 V isolated output (400 mW), 5 V input → 3.3 V output (330 mW), or 3.3 V input → 3.3 V output (132 mW), with undervoltage lockout (2.4 V/2.7 V hysteresis) on all supplies and thermal shutdown at 150°C. Channel matching is specified as ≤6 ns codirectional skew, critical for timing-sensitive isolated control loops.

Key Specifications

Pinout & Package

ADUM6402ARIZ is housed in a 16-lead SOIC wide-body (RW-16) package with 1.27 mm pitch, 10.3 mm × 7.5 mm footprint, and 2.35 mm height. Creepage distance is 7.6 mm; isolation barrier separates Pins 1–8 (input side) from Pins 9–16 (output side).

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADUM6402ARIZ, ADUM6402CRIZ offers guaranteed 25 Mbps operation over full temperature, while SI8642ED-B-IS trades isolation robustness and flexibility for lower cost and simpler configuration-neither is pin-compatible, requiring PCB redesign.

Availability

ADUM6402ARIZ is available at Aetrix Electronics and suitable for industrial motor drives, medical patient monitoring systems, programmable logic controller I/O modules, and AC/DC power supply control requiring stable component supply and long-term lifecycle support.

Supply support for ADUM6402ARIZ 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, with R&D and manufacturing operations worldwide.

The ADuM640x family was designed to replace optocouplers and discrete isolation + DC/DC solutions in space-constrained, safety-critical systems-targeting medical, industrial, and energy infrastructure applications demanding integrated, certified isolation.

FAQ

What is the maximum isolated output power of the ADUM6402ARIZ and under what conditions?

The ADUM6402ARIZ delivers up to 400 mW of isolated output power when configured for 5 V input → 5 V output operation. This occurs at VDD1 = 5 V, VISO = 5 V, and IISO = 80 mA, with efficiency of 34%. At 5 V input → 3.3 V output, it provides 330 mW (90 mA), and at 3.3 V input → 3.3 V output, it delivers 132 mW (40 mA). All values are specified across −40°C to +105°C.

Does the ADUM6402ARIZ require external components for its DC-to-DC converter to function?

Yes, the ADUM6402ARIZ requires two external capacitors: a 0.1 μF ceramic capacitor (CBO) and a 10 μF bulk capacitor (CBO) connected between VISO and GNDISO to stabilize the isolated output. No inductors or transformers are needed-the isoPower core integrates all magnetics. Layout must follow AN-0971 guidelines to minimize EMI.

How does the VSEL pin configure the ADUM6402ARIZ output voltage?

The VSEL pin selects the isolated output voltage: tie VSEL to GNDISO for 3.3 V VISO output, or tie VSEL to VISO for 5 V VISO output. This selection determines the internal regulator setpoint and affects maximum load current-e.g., 5 V mode supports up to 80 mA, while 3.3 V mode supports 100 mA when powered from 5 V input.

What safety certifications apply specifically to the ADUM6402ARIZ in the RW-16 package?

The ADUM6402ARIZ in the RW-16 package is UL recognized (5000 V rms, 1 min per UL 1577), CSA Component Acceptance Notice 5A (pending), and certified to IEC 60747-5-2 (VDE 0884 Part 2):2003-01 for basic insulation at 846 V peak. It is *not* certified to DIN V VDE V 0884-10-that applies only to the RI-16-1 package variant.

Can the ADUM6402ARIZ be used in a system requiring 25 Mbps data transmission across the full temperature range?

No-ADUM6402ARIZ is an A-grade device rated for 1 Mbps maximum operation above +85°C. While it achieves 25 Mbps at 25°C, its guaranteed data rate drops to 1 Mbps at +105°C. For full-temperature 25 Mbps, the C-grade variant ADUM6402CRIZ must be used, which maintains 25 Mbps across −40°C to +105°C.