Analog Devices Inc. ADUM6400ARIZ-RL

Overview

ADUM6400ARIZ-RL from Analog Devices is a quad-channel, 5 kV rms digital isolator with integrated isoPower® DC-to-DC converter delivering regulated 5 V output at up to 400 mW. It features Schmitt-triggered inputs, 25 Mbps data rate per channel, and operates from a 5 V input supply. It is used in isolated RS-485 transceivers and medical sensor interfaces requiring reinforced insulation and compact power delivery.

For engineers reviewing the ADUM6400ARIZ-RL datasheet, ADUM6400ARIZ-RL pinout, ADUM6400ARIZ-RL application, or ADUM6400ARIZ-RL equivalent, key selection criteria include its 5 kV rms isolation rating, integrated 5 V/400 mW isolated supply, 16-lead SOIC wide-body (RW-16) package with 8.0 mm creepage, and compliance with UL 1577, VDE V 0884-10, and IEC 60601-1 for medical systems.

Technical Context

The ADUM6400ARIZ-RL implements iCoupler® transformer-based isolation across four independent unidirectional channels (VIA→VOA, VIB→VOB, VIC→VOC, VID→VOD), with all inputs on the primary side and outputs on the secondary side. Its isoPower® core uses high-frequency switching (625 kHz PWM, 180 MHz oscillator) to transfer power across the isolation barrier via on-chip transformers.

It supports 5 V input → 5 V isolated output configuration with 400 mW max output power, 4.7–5.4 V regulation, and 75 mV_p-p ripple at 72 mA load. Safety architecture includes undervoltage lockout (2.4 V/2.7 V thresholds), thermal shutdown at 150°C, and reinforced insulation certified to VIORM = 846 V_peak per VDE V 0884-10.

Key Specifications

Pinout & Package

ADUM6400ARIZ-RL is housed in a 16-lead SOIC wide-body (RW-16) package with gull-wing leads, 1.27 mm pitch, and 10.3 mm × 10.3 mm footprint. Creepage distance is 7.6 mm; clearance is 8.0 mm. The device uses separate input (Pins 1–8) and output (Pins 9–16) ground domains.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADUM6400ARIZ-RL, ADUM6401ARIZ-RL offers identical isolation and power specs but altered output pin assignment, while SI88642EC-IS trades 5 Mbps bandwidth and Schmitt inputs for lower EMI and capacitive reliability-neither is pin-compatible, and both require PCB redesign.

Availability

ADUM6400ARIZ-RL is available at Aetrix Electronics and suitable for industrial automation, medical diagnostics, and AC/DC power supply designs requiring stable component supply, long-term lifecycle support, and certified reinforced isolation.

Supply support for ADUM6400ARIZ-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 ADuM6400 family belongs to Analog Devices' iCoupler® digital isolator product line, designed specifically to replace optocouplers and discrete isolation + power solutions in space-constrained, safety-critical systems.

FAQ

What is the maximum continuous output current supported by the ADUM6400ARIZ-RL's integrated DC-DC converter?

The ADUM6400ARIZ-RL delivers up to 80 mA continuous output current at 5 V (400 mW) when supplied with 5 V on VDD1. This is confirmed in Table 2 of the Rev. B datasheet under "Output Supply Current IISO(MAX)" with VISO > 4.5 V. Derating applies above +105°C ambient per the thermal derating curve in Figure 7.

Does the ADUM6400ARIZ-RL support 3.3 V isolated output, and how is it configured?

No - the ADUM6400ARIZ-RL is factory-configured for 5 V isolated output. Per the Ordering Guide and Functional Block Diagram, VSEL tied to GNDISO selects 5 V output; tying VSEL to VISO would select 3.3 V output, but that variant is designated ADUM6400ARWZ-RL (RW-16 package) or ADUM6400CRWZ-RL (C grade). ADUM6400ARIZ-RL is specified exclusively for 5 V output mode.

What safety certifications apply specifically to the ADUM6400ARIZ-RL in its RW-16 package?

The ADUM6400ARIZ-RL in the RW-16 package is UL recognized per UL 1577 (5000 V rms, 1 min), certified to IEC 60747-5-2 (VDE 0884 Part 2):2003-01 for basic insulation, and approved by CQC to GB4943.1-2011. It meets CSA Component Acceptance Notice 5A (pending) and provides reinforced insulation per IEC 60950-1 at 380 V rms working voltage.

Can the ADUM6400ARIZ-RL be used with a 3.3 V primary-side supply?

No - the ADUM6400ARIZ-RL is rated for 4.5 V to 5.5 V on VDD1. While the broader ADuM6400 family supports 3.3 V input (e.g., ADUM6400BRWZ-RL), the ADUM6400ARIZ-RL variant is specified only for 5 V operation. Attempting 3.3 V input risks failure to start the isoPower converter and violates Absolute Maximum Ratings (VDD1 min = 4.5 V).

How does the ADUM6400ARIZ-RL handle undervoltage conditions on its isolated supply (VISO)?

The ADUM6400ARIZ-RL does not monitor or regulate VISO dynamically beyond its internal feedback loop. However, its UVLO circuit protects VDD1 and VDDL (primary-side rails) at 2.4 V (falling) / 2.7 V (rising). VISO regulation is maintained open-loop via internal PWM control; loss of VISO load causes no shutdown - only output voltage drift outside spec (±5% at full load, per Table 2).