Analog Devices Inc. ADUM2211SRWZ-RL

Overview

ADUM2211SRWZ-RL from Analog Devices is a dual-channel, 5 kV rms reinforced digital isolator using iCoupler® transformer-based technology. It provides bidirectional signal isolation between two independent circuits operating at 3.0–5.5 V on each side, supports up to 10 Mbps NRZ data rate, features 3 ns max pulse width distortion and 3 ns max channel-to-channel matching, and is used in RS-485 transceiver isolation and battery monitor interfaces in hybrid electric vehicles.

For engineers reviewing the ADUM2211SRWZ-RL datasheet, ADUM2211SRWZ-RL pinout, ADUM2211SRWZ-RL application, or ADUM2211SRWZ-RL equivalent, key selection criteria include reinforced 5 kV rms isolation rating, 125°C operation, mixed-voltage level translation (3.3 V/5 V), low power consumption (≤2.6 mA per channel at 1 Mbps, 3.3 V), and AEC-Q100 qualification for automotive systems.

Technical Context

The ADUM2211SRWZ-RL implements two independent unidirectional isolation channels with input-side logic inputs (VIA, VIB) and output-side logic outputs (VOA, VOB), enabling asymmetric signal routing across the barrier. Its iCoupler® architecture replaces optocouplers with monolithic air-core transformers, eliminating LED aging and CTR drift while delivering stable timing over temperature.

It supports four supply configurations: 5 V/5 V, 3.3 V/3.3 V, 5 V/3.3 V, and 3.3 V/5 V - enabling voltage translation without external level shifters. Default-low output behavior and precise propagation delay matching (≤3 ns skew) make it suitable for time-critical industrial communication and motor control feedback loops.

Key Specifications

Pinout & Package

ADUM2211SRWZ-RL uses a 16-lead SOIC wide-body package (RW-16) with creepage/clearance optimized for reinforced insulation. Pin 1–8 form Side 1 (input side); Pins 9–16 form Side 2 (output side). Ground pins are segregated (GND1 on Pins 1/7; GND2 on Pins 9/16) to minimize coupling.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADUM2210SRWZ-RL and SI8621ED-IS, ADUM2211SRWZ-RL uniquely combines AEC-Q100 qualification, 125°C operation, and asymmetric pinout optimized for controller-to-peripheral signal flow - making it the only option qualified for automotive battery monitoring and high-temp industrial motor drives.

Availability

ADUM2211SRWZ-RL is available at Aetrix Electronics and suitable for industrial motor drives, automotive battery monitoring systems, medical power supplies, and isolated RS-485 transceiver designs requiring stable component supply, long-term lifecycle assurance, and certified reinforced isolation.

Supply support for ADUM2211SRWZ-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, serving industrial, automotive, communications, and healthcare markets.

The ADuM2211 is part of Analog Devices' iCoupler® digital isolator product line, designed specifically for high-reliability, high-speed galvanic isolation in safety-critical and noise-immune applications such as EV battery management and medical equipment.

FAQ

What is the maximum data rate supported by ADUM2211SRWZ-RL?

ADUM2211SRWZ-RL supports a maximum data rate of 10 Mbps in NRZ format. This is confirmed across all supply configurations (3.3 V/3.3 V, 5 V/5 V, and mixed 3.3 V/5 V or 5 V/3.3 V) and over the full operating temperature range of −40°C to +125°C. The device maintains timing integrity with ≤3 ns pulse width distortion even at this rate.

Does ADUM2211SRWZ-RL support level translation between 3.3 V and 5 V domains?

Yes, ADUM2211SRWZ-RL natively supports bidirectional level translation. It operates with VDD1 and VDD2 independently set between 3.0 V and 5.5 V, enabling direct interfacing between 3.3 V microcontrollers and 5 V peripherals without external level shifters. This is verified in Tables 7 and 10 of the Rev. G datasheet for mixed-supply conditions.

What safety certifications does ADUM2211SRWZ-RL hold?

ADUM2211SRWZ-RL holds UL 1577 (5000 V rms, 1 min), DIN EN IEC 60747-17 (VDE 0884-17) reinforced insulation (VIORM = 645 V peak), IEC/EN/CSA 62368-1, IEC/CSA 60601-1 (2 MOPP), and IEC/CSA 61010-1. It is also AEC-Q100 qualified for automotive Grade 1 (−40°C to +125°C).

How does the pinout of ADUM2211SRWZ-RL differ from ADUM2210SRWZ-RL?

ADUM2211SRWZ-RL has VIA and VIB on Side 1 (Pins 13 and 5), with VOA and VOB on Side 2 (Pins 4 and 12). ADUM2210SRWZ-RL places both inputs (VIA, VIB) on Side 1 and both outputs (VOA, VOB) on Side 2 - same physical pin locations but different functional assignment. This makes ADUM2211SRWZ-RL ideal for controller-to-peripheral signal flow where inputs and outputs are physically separated.

What is the default output state of ADUM2211SRWZ-RL during power loss?

ADUM2211SRWZ-RL has a default-low output state. When either VDD1 or VDD2 is unpowered, the corresponding outputs (VOA/VOB) transition to logic low within 1 µs of power restoration. This behavior is documented in Table 21 (ADuM2211 Truth Table) and ensures fail-safe operation in motor control or relay driver applications.