Analog Devices Inc. ADUM2286BRIZ-RL

Overview

ADuM2286BRIZ-RL from Analog Devices is a 5 kVRMS dual-channel digital isolator using iCoupler® transformer-based technology, providing bidirectional signal isolation between two independent voltage domains. It supports up to 100 Mbps data rate, features 24 ns maximum propagation delay, operates from 3.0 V to 5.5 V on both sides, and delivers default-low output behavior during power-up or input-side unpowered conditions. It is used in RS-485 transceiver isolation and medical equipment safety barriers.

For engineers reviewing the ADuM2286BRIZ-RL datasheet, ADuM2286BRIZ-RL pinout, ADuM2286BRIZ-RL application, or ADuM2286BRIZ-RL equivalent, key selection criteria include reinforced insulation rating (645 V_PEAK), high common-mode transient immunity (>25 kV/µs), C-grade timing performance, and SOIC-16W package with 8.7 mm creepage/clearance for IEC 60601-1 2-MOPP compliance.

Technical Context

The ADuM2286BRIZ-RL implements monolithic air-core transformer coupling per channel, enabling galvanic isolation without optocoupler aging or LED drive complexity. Its patented refresh circuit maintains DC-correct output states even with static inputs, eliminating output drift during idle periods.

It supports mixed-voltage operation (e.g., 3.3 V side ↔ 5 V side), provides level translation across the barrier, and guarantees functional correctness under undervoltage lockout (2.4 V–2.6 V thresholds) and thermal stress up to +125°C ambient. Channel-to-channel matching is ≤5 ns (C grade) for precise timing-critical interfaces.

Key Specifications

Pinout & Package

ADuM2286BRIZ-RL uses a 16-lead SOIC wide-body package (package code: RW-16) with enhanced creepage. Pin 1 is located at the top-left corner adjacent to the index mark; pins are numbered counter-clockwise. Ground planes must be split across the isolation barrier, with GND1 (pins 1, 7) and GND2 (pins 9, 16) kept physically separated on PCB layout.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADuM2281BRIZ-RL, ADuM2286BRIZ-RL provides safer default-off behavior for critical outputs; compared with SI8621ED-B-IS, it offers guaranteed 8.7 mm creepage and pinout compatibility with legacy Analog Devices isolator designs-reducing qualification time in regulated systems.

Availability

ADuM2286BRIZ-RL is available at Aetrix Electronics and suitable for industrial motor drives, medical diagnostic equipment, programmable logic controllers, and isolated RS-485 transceivers requiring stable component supply across extended product lifecycles.

Supply support for ADuM2286BRIZ-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 precision instrumentation, industrial automation, and healthcare markets.

The ADuM228x family was designed specifically for high-reliability, safety-critical isolation in medical, industrial, and energy infrastructure applications-emphasizing reinforced insulation, low-latency timing, and robustness against fast transients.

FAQ

What is the default output state of ADuM2286BRIZ-RL during power-up?

ADuM2286BRIZ-RL has a default-low output state on both VOA and VOB pins when VDD1 or VDD2 is unpowered or during initial power application. This fail-safe behavior prevents unintended activation of downstream circuits such as gate drivers or relay controls, and is confirmed in Table 25 of the ADuM2286BRIZ-RL datasheet.

Does ADuM2286BRIZ-RL support mixed-voltage operation between 3.3 V and 5 V domains?

Yes, ADuM2286BRIZ-RL supports mixed-voltage operation: VDD1 can be 3.0–3.6 V while VDD2 is 4.5–5.5 V (or vice versa), enabling level translation across the isolation barrier. Electrical characteristics for 3 V/5 V and 5 V/3 V configurations are fully specified in Tables 7 and 10 of the ADuM2286BRIZ-RL datasheet.

What safety certifications does ADuM2286BRIZ-RL hold for medical applications?

ADuM2286BRIZ-RL is certified to IEC/CSA 60601-1 with reinforced insulation (2 MOPP), rated at 50 V_RMS working voltage, and carries DIN EN IEC 60747-17 (VDE 0884-17) approval (marked with * on package). These certifications validate its suitability for patient-connected medical devices per ADuM2286BRIZ-RL regulatory documentation.

How does the refresh feature in ADuM2286BRIZ-RL maintain DC correctness?

ADuM2286BRIZ-RL incorporates a patented internal refresh circuit that periodically retransmits the last valid input state across the isolation barrier-even with static inputs-ensuring output stability over indefinite periods. The refresh period is fixed at 1.6 µs, as specified in the AC characteristics section of the ADuM2286BRIZ-RL datasheet.

Is ADuM2286BRIZ-RL pin-compatible with earlier Analog Devices isolator families?

Yes, ADuM2286BRIZ-RL is pin-compatible with the ADuM2201 and ADuM2211 families, as confirmed in Figure 2 and Table 21 of the ADuM2286BRIZ-RL datasheet. This allows direct replacement in existing designs without PCB modification, provided default-output behavior and timing requirements are verified.