Analog Devices Inc. ADUM6404CRWZ

Overview

ADUM6404CRWZ from Analog Devices is a quad-channel digital isolator with integrated isoPower® DC-to-DC converter, providing 5 kV rms reinforced isolation, 25 Mbps data rate per channel, and up to 400 mW isolated output power at 5 V. It operates across −40°C to +105°C and delivers regulated 5 V or 3.3 V isolated supply for RS-485 transceivers and medical sensor interfaces.

For engineers reviewing the ADUM6404CRWZ datasheet, ADUM6404CRWZ pinout, ADUM6404CRWZ application, or ADUM6404CRWZ equivalent, key selection criteria include its 5 kV rms isolation rating, 25 Mbps NRZ signal capability, integrated 400 mW isoPower converter, SOIC RW-16 package with 8.0 mm creepage, and compliance with UL 1577, VDE V 0884-10, and IEC 60601-1.

Technical Context

The ADUM6404CRWZ implements iCoupler® transformer-based isolation with four unidirectional channels (all inputs on side 1, all outputs on side 2), enabling clean signal transfer across galvanic barriers without external magnetics. Its isoPower core uses high-frequency switching (180 MHz oscillator, 625 kHz PWM) to deliver regulated isolated power while maintaining tight load regulation (±5%) and low output ripple (75 mV p-p at 72 mA).

It features Schmitt-triggered inputs for noise immunity, undervoltage lockout (2.4 V/2.7 V hysteresis) on all supplies, and robust common-mode transient immunity (>25 kV/μs). The device supports three input/output voltage configurations: 5 V/5 V, 5 V/3.3 V, and 3.3 V/3.3 V - with ADUM6404CRWZ specifically rated for 5 V primary input and 5 V isolated output at up to 80 mA load current.

Key Specifications

Pinout & Package

ADUM6404CRWZ uses 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. Input-side pins (1–8) and output-side pins (9–16) are physically segregated to maximize creepage and clearance.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADUM6404ARWZ, ADUM6404CRWZ delivers 25× higher data rate and tighter timing; versus SI88642ED-IS, it integrates full regulation but trades off peak speed - making ADUM6404CRWZ optimal for balanced performance in industrial and medical isolation where regulated power and 25 Mbps coexist.

Availability

ADUM6404CRWZ is available at Aetrix Electronics and suitable for industrial motor control, medical patient monitoring, AC/DC power supply bias, and isolated RS-485 transceiver designs requiring stable component supply, long-term lifecycle support, and certified reinforced isolation.

Supply support for ADUM6404CRWZ 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 ADuM640x family was designed to replace optocouplers and discrete isolation + DC/DC solutions in space- and reliability-critical applications - targeting industrial automation, medical instrumentation, and energy systems needing integrated, certified isolation.

FAQ

What is the maximum isolated output power of the ADUM6404CRWZ?

The ADUM6404CRWZ delivers up to 400 mW of regulated isolated output power at 5 V when supplied with a 5 V input. This corresponds to 80 mA output current under full-load conditions, with load regulation maintained within ±5% across 8–72 mA. The device achieves this using its integrated isoPower DC-to-DC converter without external magnetics.

Does the ADUM6404CRWZ support 3.3 V isolated output?

Yes, the ADUM6404CRWZ supports 3.3 V isolated output when configured with VSEL tied to GNDISO and a 5 V input supply, delivering up to 330 mW (100 mA). It also operates with a 3.3 V input to produce 3.3 V output (132 mW), though ADUM6404CRWZ is characterized and specified for 5 V/5 V operation per its C-grade speed bin and RW-16 package certification.

What safety certifications apply to the ADUM6404CRWZ?

The ADUM6404CRWZ holds UL 1577 recognition (5000 V rms for 1 minute), VDE V 0884-10 certification (DIN V VDE V 0884-10:2006-12) for reinforced insulation, and IEC 60601-1 approval for medical applications (250 V rms working voltage). It is packaged in the RW-16 variant, which carries basic insulation per CSA/IEC 60950-1 and reinforced classification per IEC 60601-1.

How does the ADUM6404CRWZ differ from the ADUM6404BRWZ?

The ADUM6404CRWZ is the C-grade version with 25 Mbps data rate and 45–60 ns propagation delay, while ADUM6404BRWZ is the B-grade variant offering 10 Mbps and 50–75 ns delay. Both share identical isolation rating, power capability, and RW-16 packaging, but ADUM6404CRWZ is specified for higher-speed industrial communications where timing precision is critical.

Can the ADUM6404CRWZ be used in medical applications requiring IEC 60601-1 compliance?

Yes, the ADUM6404CRWZ is certified to IEC 60601-1 with a 250 V rms maximum working voltage (reinforced insulation) and meets creepage/clearance requirements for patient-connected equipment. Its VDE V 0884-10 rating and 5000 V rms isolation withstand ensure suitability for ECG, EEG, and other Class II medical devices when implemented per manufacturer layout guidelines.