Analog Devices Inc. ADUM6402CRIZ

Overview

ADUM6402CRIZ 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 data rate per channel, and rated for 5 kV rms isolation (1 min). It operates across −40°C to +105°C and targets medical isolation and RS-485 transceiver biasing.

For engineers reviewing the ADUM6402CRIZ datasheet, ADUM6402CRIZ pinout, ADUM6402CRIZ application, or ADUM6402CRIZ equivalent, this page delivers verified specifications, validated pin functions, confirmed safety certifications (UL, VDE, IEC 60601-1), and real-world design context for isolated power and signal integrity in compact industrial and medical systems.

Technical Context

The ADUM6402CRIZ implements iCoupler® transformer-based isolation with four independent unidirectional channels (inputs on side 1, outputs on side 2), using Schmitt-triggered inputs for noise immunity. Its integrated DC-to-DC converter operates at 625 kHz PWM frequency and 180 MHz oscillator frequency, regulated via internal feedback without external components.

Isolation barrier withstands >25 kV/μs common-mode transients and supports reinforced insulation per DIN V VDE V 0884-10 (VIORM = 846 V peak) in the RI-16-1 package. The device features undervoltage lockout (2.4 V–2.7 V hysteresis) on all supplies and thermal shutdown at 150°C with 20°C hysteresis.

Key Specifications

Pinout & Package

ADUM6402CRIZ uses the RI-16-1 package: 16-lead SOIC wide-body with enhanced creepage (8.3 mm), certified for reinforced insulation per DIN V VDE V 0884-10 and IEC 60601-1.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADUM6402ARIZ, the ADUM6402CRIZ offers tighter timing control and higher throughput; versus SI8642ED-B-IS, it trades raw CMTI for integrated power simplicity-making ADUM6402CRIZ optimal for medical and compact industrial designs needing both isolation and local power.

Availability

ADUM6402CRIZ is available at Aetrix Electronics and suitable for medical instrumentation, industrial RS-485 networks, and AC/DC power supply biasing requiring stable component supply, long-term lifecycle support, and certified reinforced insulation.

Supply support for ADUM6402CRIZ 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 specifically to integrate signal isolation and isolated DC power in a single package for medical, industrial, and energy systems where safety certification, space constraints, and reliability are paramount.

FAQ

What is the maximum output current capability of the ADUM6402CRIZ's integrated DC-to-DC converter?

The ADUM6402CRIZ delivers up to 80 mA at 5.0 V output (400 mW) or 100 mA at 3.3 V output (330 mW) when supplied with 5.0 V input. Output current is load-regulated with ≤5% variation across 8–72 mA (5 V mode) or 10–90 mA (3.3 V mode), as specified in Tables 2 and 10 of the Rev. B datasheet. This makes ADUM6402CRIZ suitable for powering small isolated peripherals like transceivers or ADCs without external regulators.

Does the ADUM6402CRIZ support bidirectional data transmission?

No, the ADUM6402CRIZ provides four unidirectional channels: inputs VIA–VID are on the primary side (pins 1–4), and outputs VOA–VOD are on the isolated secondary side (pins 9–12). For bidirectional communication, two ADUM6402CRIZ devices or a different variant (e.g., ADUM6403) must be used. This architecture ensures strict galvanic separation and predictable timing behavior in the ADUM6402CRIZ.

What safety certifications apply specifically to the ADUM6402CRIZ in the RI-16-1 package?

The ADUM6402CRIZ in the RI-16-1 package is certified for reinforced insulation per DIN V VDE V 0884-10 (VIORM = 846 V peak), UL 1577 (5000 V rms, 1 min), and IEC 60601-1 (250 V rms working voltage). It also meets CSA Component Acceptance Notice 5A and CQC GB4943.1-2011. These certifications are explicitly listed for the RI-16-1 variant in Table 15 of the datasheet and apply directly to the ADUM6402CRIZ ordering option.

How does the VSEL pin configure the ADUM6402CRIZ's output voltage?

The VSEL pin on the ADUM6402CRIZ selects the isolated output voltage: tie VSEL to GNDISO for 3.3 V VISO output; tie VSEL to VISO for 5.0 V VISO output. This configuration is fixed at power-up and determines regulation setpoint, line/load regulation, and maximum output current. The ADUM6402CRIZ does not support dynamic switching - VSEL must be hard-wired before operation, and its state defines the operating mode of the ADUM6402CRIZ.

Can the ADUM6402CRIZ operate with a 3.3 V primary supply?

Yes, the ADUM6402CRIZ supports 3.3 V primary operation (VDD1 = 3.0–3.6 V) with corresponding 3.3 V isolated output. In this mode, maximum output power drops to 132 mW (40 mA), and input supply current is reduced (IDD1(Q) = 15–28 mA). All timing and isolation specs remain valid across the full −40°C to +105°C range. This dual-supply flexibility is fully characterized and guaranteed for the ADUM6402CRIZ.