Analog Devices Inc. ADUM2211SRIZ

Overview

ADuM2211SRIZ from Analog Devices is a dual-channel, 5 kV rms reinforced digital isolator based on iCoupler® transformer technology, supporting bidirectional communication at up to 10 Mbps with 3 ns pulse width distortion and 3 ns channel-to-channel matching. It operates across 3.0 V–5.5 V supplies on both sides, enabling 3.3 V/5 V level translation, and delivers 1.4 mA/channel (3.3 V, 1 Mbps) or 3.7 mA/channel (5 V, 10 Mbps) for medical-grade power supply and RS-485 transceiver isolation.

For engineers reviewing the ADuM2211SRIZ datasheet, ADuM2211SRIZ pinout, ADuM2211SRIZ application, or ADuM2211SRIZ equivalent, key selection criteria include reinforced 5000 V rms isolation rating, AEC-Q100 qualification, VIORM = 645 V peak per VDE 0884-17, high common-mode transient immunity (>25 kV/µs), and SOIC-16 wide-body (RW-16) package compatibility with creepage/clearance requirements for IEC 60601-1 and IEC 62368-1 systems.

Technical Context

The ADuM2211SRIZ implements monolithic air-core transformer coupling with integrated CMOS interface circuitry on both sides, eliminating LED/photodiode dependencies and delivering stable timing over temperature (−40°C to +125°C). Its architecture supports independent supply domains (VDD1/VDD2), enabling true galvanic signal translation without shared ground constraints.

Unlike optocouplers, it guarantees deterministic propagation delay (≤50 ns max at 10 Mbps), precise channel matching (≤3 ns codirectional skew), and low dynamic power consumption (0.03–0.19 mA/Mbps), making it suitable for real-time control loops in motor drives and battery monitors where jitter-sensitive data integrity is critical.

Key Specifications

Pinout & Package

ADuM2211SRIZ uses a 16-lead SOIC wide-body (RW-16) package with 7.8 mm creepage and clearance, optimized for reinforced insulation in high-voltage systems. Pin 1 is GND1; pins 4 and 13 are VOA (output A) and VIA (input A), respectively - confirming asymmetric input/output pin assignment unique to the ADuM2211 variant.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual-channel digital isolator applications.

Compared with ADuM2211SRIZ, ADuM2210SRIZ offers identical specs but reversed channel logic flow, requiring schematic changes; SI8621ED-IS trades VDE-certified reinforced insulation for lower cost and higher integration density, limiting use to non-patient-connected systems.

Availability

ADuM2211SRIZ is available at Aetrix Electronics and suitable for medical equipment, industrial RS-485 networks, hybrid electric vehicle battery monitors, and switch-mode power supply feedback loops requiring stable component supply, long-term lifecycle support, and certified reinforced isolation.

Supply support for ADuM2211SRIZ 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, serving precision instrumentation, industrial automation, and healthcare markets.

The ADuM2211SRIZ belongs to the iCoupler® digital isolator product line, engineered specifically for replacing optocouplers in safety-critical, high-noise, and mixed-voltage systems where timing predictability, low power, and regulatory compliance are mandatory.

FAQ

What is the isolation rating and safety certification status of ADuM2211SRIZ?

ADuM2211SRIZ is rated for 5000 V rms isolation (1 minute) and certified to UL 1577, VDE 0884-17 (DIN EN IEC 60747-17), IEC 62368-1, IEC 60601-1 (2 MOPP), and IEC 61010-1. Its VIORM = 645 V peak and reinforced insulation classification make it suitable for patient-connected medical devices and industrial safety systems requiring dual protection.

How does ADuM2211SRIZ differ from ADuM2210SRIZ in pin configuration and functionality?

ADuM2211SRIZ has VIA connected to VOB and VIB connected to VOA - a cross-coupled arrangement enabling direct full-duplex link setup. In contrast, ADuM2210SRIZ maps VIA→VOA and VIB→VOB. This difference is reflected in Tables 22 and 23 of the datasheet and requires distinct PCB layout and firmware logic handling for each part.

Can ADuM2211SRIZ operate with different supply voltages on each side, and what are the supported ranges?

Yes, ADuM2211SRIZ supports independent 3.0 V–5.5 V supplies on VDD1 and VDD2, enabling true level translation. Valid configurations include 3.3 V/5 V, 5 V/3.3 V, 3.3 V/3.3 V, and 5 V/5 V - all verified in Tables 7–12 of the datasheet with specified current consumption and timing performance across grades.

What is the default output state of ADuM2211SRIZ during power-up or supply loss?

ADuM2211SRIZ features a default-low output state on both channels. When either VDD1 or VDD2 is unpowered, the corresponding outputs enter a defined low state within 1 µs of supply restoration - preventing floating logic levels and ensuring fail-safe behavior in power sequencing-critical systems like motor drives and medical diagnostics.

Does ADuM2211SRIZ require external components for basic operation, and what layout guidance applies?

No external components are needed for core isolation functionality. However, the datasheet mandates local 0.1 µF ceramic bypass capacitors at VDD1 and VDD2 pins (close to pins 3 and 14), plus proper PCB separation between input and output traces to maintain 7.8 mm creepage. Figure 12 and Section "PCB Layout" specify minimum spacing and grounding practices to preserve >25 kV/µs CMTI.