Analog Devices Inc. ADUM6400CRWZ-RL

Overview

ADUM6400CRWZ-RL from Analog Devices is a quad-channel digital isolator with integrated isoPower® DC-to-DC converter, delivering up to 400 mW isolated 5 V output from a 5 V input, 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 medical isolation, RS-485 transceiver biasing, and isolated sensor interfaces.

For engineers reviewing the ADUM6400CRWZ-RL datasheet, ADUM6400CRWZ-RL pinout, ADUM6400CRWZ-RL application, or ADUM6400CRWZ-RL equivalent, this page delivers verified specifications, SOIC-W-16 pin mapping, safety certifications (UL 1577, VDE 0884-10), thermal derating behavior, and real-world substitution guidance for industrial and medical power-isolated signal conditioning designs.

Technical Context

The ADUM6400CRWZ-RL implements iCoupler® transformer-based isolation with four unidirectional channels (input-side pins 1–4, output-side pins 13–16) and an on-chip high-frequency switching DC-DC converter operating at 625 kHz PWM and 180 MHz oscillator frequency. Its internal regulation maintains ±3% VISO setpoint accuracy under load and line variation.

It features Schmitt-triggered inputs for noise immunity, supports dual supply configurations (5 V/5 V, 5 V/3.3 V, or 3.3 V/3.3 V), and includes undervoltage lockout (2.4 V/2.7 V hysteresis) on VDD1, VDDL, and VISO rails. Common-mode transient immunity exceeds 25 kV/μs, validated per IEC 60747-5-2 and DIN V VDE V 0884-10.

Key Specifications

Pinout & Package

ADUM6400CRWZ-RL uses a 16-lead SOIC wide-body package (RW-16) with creepage ≥7.6 mm and clearance ≥8.0 mm. Pin 1 is marked with dot; input-side ground (GND1) and output-side ground (GNDISO) are fully isolated.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SI8641ED-B-IS and ISO6741-Q1, ADUM6400CRWZ-RL uniquely integrates regulated 400 mW isolated power in a single RW-16 package-reducing component count and layout complexity where self-powered isolation is critical, such as in portable medical devices or compact industrial sensors.

Availability

ADUM6400CRWZ-RL is available at Aetrix Electronics and suitable for medical instrumentation, industrial RS-485 networks, AC/DC auxiliary power supplies, and isolated sensor interfaces requiring stable component supply with long-term lifecycle assurance.

Supply support for ADUM6400CRWZ-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, with design centers worldwide and over 50 years of innovation in precision signal chain solutions.

The ADuM6400 family belongs to Analog Devices' iCoupler® digital isolation product line, engineered specifically for applications demanding integrated isolated power and robust galvanic separation in medical, industrial, and energy systems.

FAQ

What is the maximum continuous output current supported by ADUM6400CRWZ-RL in 5 V/5 V configuration?

The ADUM6400CRWZ-RL delivers up to 80 mA continuous output current on VISO when configured for 5 V input and 5 V output, corresponding to 400 mW total power. This is validated across −40°C to +105°C ambient, with efficiency of 34% at full load. Derating applies above 85°C case temperature per the thermal derating curve in Figure 7 of the datasheet.

Does ADUM6400CRWZ-RL support bidirectional data transmission on its isolation channels?

No, ADUM6400CRWZ-RL provides four unidirectional isolation channels only: VIA→VOA, VIB→VOB, VIC→VOC, and VID→VOD. Each channel is hardwired input-to-output; reverse direction signaling requires pairing with a complementary isolator or using external logic. The ADUM6401 variant offers mixed-direction configurations, but ADUM6400CRWZ-RL is strictly input-side-to-output-side.

Can ADUM6400CRWZ-RL be used with a 3.3 V input supply to generate 5 V isolated output?

No, ADUM6400CRWZ-RL does not support 3.3 V input to 5 V output conversion. Per Table 1 and electrical characteristics, it supports only three combinations: 5 V/5 V, 5 V/3.3 V, or 3.3 V/3.3 V. Attempting 3.3 V input with VSEL tied to VISO (intended for 5 V VISO) results in UVLO activation and no VISO regulation.

What safety certifications apply specifically to the ADUM6400CRWZ-RL RW-16 package?

The ADUM6400CRWZ-RL in 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 with VIORM = 846 V peak, and approved to CSA Component Acceptance Notice 5A. It carries basic insulation per IEC 60950-1 (400 V rms) and reinforced insulation per IEC 60601-1 (250 V rms).

How does the VSEL pin configure the isolated output voltage on ADUM6400CRWZ-RL?

On ADUM6400CRWZ-RL, VSEL (Pin 7) selects VISO output voltage: tying VSEL to GNDISO configures 3.3 V output; tying VSEL to VISO configures 5 V output. This selection is active only when the primary supply matches (i.e., 5 V input for 5 V VISO, 3.3 V input for 3.3 V VISO). VSEL must not float and must be externally connected per Table 1 and Figure 1.