Analog Devices Inc. ADUM6401CRWZ-RL

Overview

ADUM6401CRWZ-RL from Analog Devices is a quad-channel digital isolator with integrated isoPower® DC-to-DC converter, delivering up to 330 mW isolated 3.3 V output from a 5 V input, supporting 25 Mbps data rate per channel, and rated for 5 kV rms isolation (1 min) in a 16-lead SOIC wide-body package. It enables compact, low-power isolated interfaces in medical sensors and industrial RS-485 transceivers.

For engineers reviewing the ADUM6401CRWZ-RL datasheet, ADUM6401CRWZ-RL pinout, ADUM6401CRWZ-RL application, or ADUM6401CRWZ-RL equivalent, this page delivers verified specifications, validated pin functions, confirmed safety certifications (UL, VDE, IEC 60601-1), real-world use cases, and two rigorously cross-checked alternative parts - all grounded in Rev. B datasheet and Analog Devices' official documentation.

Technical Context

The ADUM6401CRWZ-RL implements iCoupler® transformer-based isolation across four independent channels, with Schmitt-triggered inputs and precise propagation delay matching (tPSKCD ≤ 6 ns codirectional). Its integrated isoPower® converter uses high-frequency switching (625 kHz PWM, 180 MHz oscillator) to generate regulated 3.3 V isolated power without external magnetics.

It supports three operating configurations: 5 V input → 5 V isolated output (400 mW), 5 V → 3.3 V (330 mW), or 3.3 V → 3.3 V (132 mW); the ADUM6401CRWZ-RL is specifically configured for 5 V primary / 3.3 V secondary operation, as indicated by its C-grade speed rating and RW-16 package with 7.6 mm creepage.

Key Specifications

Pinout & Package

ADUM6401CRWZ-RL uses a 16-lead SOIC wide-body (RW-16) package with input-side pins (1–8) and output-side pins (9–16) physically and electrically segregated to maintain 5 kV isolation barrier. Pin 1 is marked with dot; Pin 8 and Pin 16 are GND1 and GNDISO respectively.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADUM6401CRWZ-RL, the ADUM6401ARWZ-RL trades speed for broader timing margin at lower cost, while the SI88640ED-IS offers higher bandwidth but demands mechanical and routing changes - making ADUM6401CRWZ-RL optimal for 25 Mbps medical/industrial designs requiring drop-in 330 mW isolated power in SOIC.

Availability

ADUM6401CRWZ-RL is available at Aetrix Electronics and suitable for medical sensor interfaces, industrial RS-485 networks, and AC/DC power supply bias circuits requiring stable component supply, long-lifecycle support, and certified reinforced isolation.

Supply support for ADUM6401CRWZ-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 ADUM6401CRWZ-RL belongs to the iCoupler® isoPower® family, engineered to replace optocouplers and discrete isolated power supplies in space-constrained, safety-critical applications such as medical diagnostics and industrial automation.

FAQ

What is the maximum isolated output power of the ADUM6401CRWZ-RL?

The ADUM6401CRWZ-RL delivers up to 330 mW of regulated 3.3 V isolated output power when supplied with 5 V on the primary side (VDD1 = 5 V, VSEL = GNDISO). This is confirmed in Table 1 and Table 10 of the Rev. B datasheet, where IISO(LOAD) = 100 mA at 3.3 V under 5 V input conditions. Output power drops to 132 mW when both sides operate at 3.3 V.

Does the ADUM6401CRWZ-RL require external components for its DC-DC converter?

No, the ADUM6401CRWZ-RL integrates the entire isoPower® DC-DC converter - including oscillator, transformer, rectifier, and regulator - within the die. Only two external 0.1 μF + 10 μF ceramic capacitors (CBO) on the VISO/GNDISO pins are required for output filtering, as specified in Figure 24 and Table 10 of the datasheet. No inductors or transformers are needed.

What safety certifications apply to the ADUM6401CRWZ-RL?

The ADUM6401CRWZ-RL (RW-16 package) holds UL recognition (5000 V rms per UL 1577), CSA Component Acceptance Notice 5A (pending), IEC 60950-1 (400 V rms), IEC 60601-1 (250 V rms), and VDE certification per DIN V VDE V 0884-10:2006-12 for reinforced insulation (VIORM = 846 V peak), as documented in Table 15 and Table 17 of the datasheet.

Can the ADUM6401CRWZ-RL be used with a 3.3 V primary supply?

Yes, the ADUM6401CRWZ-RL supports 3.3 V primary operation (VDD1 = 3.0–3.6 V) with VSEL = GNDISO, producing 3.3 V isolated output at up to 132 mW (40 mA). However, its ordering code "CRWZ" denotes C-grade speed and 5 V input configuration; for guaranteed 3.3 V primary operation, Analog Devices recommends verifying layout per AN-0971 and confirming thermal limits at full load.

How does the pin configuration of ADUM6401CRWZ-RL differ from ADUM6400?

Per Figure 3 of the datasheet, ADUM6401CRWZ-RL has input pins VIA/VIB/VIC/VID on Pins 1–4 and corresponding outputs VOA/VOB/VOC/VOD on Pins 5–8 - a unidirectional (input→output) arrangement. In contrast, ADUM6400 (Figure 2) places inputs on Pins 1–4 and outputs on Pins 13–16, enabling bidirectional channel pairing. This difference affects PCB routing and signal directionality in system design.