Analog Devices Inc. ADUM162N1BRZ

Overview

ADUM162N1BRZ from Analog Devices is a 6-channel, 3.0 kV_RMS digital isolator based on iCoupler® technology, providing reinforced isolation between microcontroller peripherals and industrial field buses. It supports 150 Mbps data rate, 13 ns max propagation delay at 5 V, 1.8 V to 5.5 V dual-supply operation, and fail-safe high output configuration. It is used in SPI isolation for motor control gate drivers where noise immunity and timing integrity are critical.

For engineers reviewing the ADUM162N1BRZ datasheet, ADUM162N1BRZ pinout, ADUM162N1BRZ application, or ADUM162N1BRZ equivalent, key selection criteria include channel count (6), fail-safe state (high), reinforced insulation rating (VIORM = 565 V_peak), common-mode transient immunity (100 kV/µs), and narrow-body SOIC-16 package compatibility with IPC-7351B land patterns.

Technical Context

The ADUM162N1BRZ implements six independent unidirectional isolation channels using monolithic air-core transformers, enabling dc-correct signal transmission without input transitions. Its architecture ensures tight channel-to-channel propagation delay matching (≤4.0 ns codirectional skew) and low jitter (70 ps rms at 5 V).

It features dual independent supply domains (VDD1/VDD2), each supporting 1.7 V–5.5 V operation, allowing level translation across the isolation barrier. Undervoltage lockout (UVLO) activates at 1.5 V (falling) and 1.6 V (rising) per side, guaranteeing robust power-on reset behavior under brownout conditions.

Key Specifications

Pinout & Package

ADUM162N1BRZ uses a 16-lead, RoHS-compliant, narrow-body SOIC package (SOIC_N) with 7.5 mm body width and 1.27 mm pitch. Pin 1 is marked with a dot; inputs occupy pins 1–6 and 16, outputs occupy pins 8–13, with VDD1 (pins 7, 14), VDD2 (pins 9, 15), GND1 (pin 16), and GND2 (pin 8) arranged for optimal creepage/clearance (≥4.0 mm).

Key Features

Applications

Equivalent & Alternatives

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

Compared with SI8661ED-B-IS and ISO6760FDWER, ADUM162N1BRZ uniquely combines 150 Mbps speed, 3000 V_RMS reinforced isolation, and factory-configured fail-safe high output-enabling drop-in replacement in existing iCoupler-based designs without layout or firmware changes.

Availability

ADUM162N1BRZ is available at Aetrix Electronics and suitable for industrial motor drives, PLC analog I/O modules, and medical diagnostic equipment requiring stable component supply, long-term lifecycle support, and traceable sourcing.

Supply support for ADUM162N1BRZ 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 semiconductor company specializing in high-performance analog, mixed-signal, and digital signal processing technologies.

The ADuM16xN series was designed specifically for high-reliability industrial and medical isolation applications demanding low propagation delay, high CMTI, and certified reinforced insulation in compact SOIC packages.

FAQ

What is the fail-safe output state of ADUM162N1BRZ?

The ADUM162N1BRZ is configured as a fail-safe high device: when VDD1 is unpowered or below UVLO threshold (1.5 V), all six outputs default to logic high. This behavior is factory-set and cannot be changed. It prevents unintended activation of downstream isolated gate drivers or relays during power-up sequences or supply faults, making ADUM162N1BRZ suitable for safety-critical power conversion systems.

Does ADUM162N1BRZ support 1.8 V operation on both sides?

Yes, ADUM162N1BRZ supports 1.7 V to 5.5 V operation independently on VDD1 and VDD2. At 1.8 V, it delivers 150 Mbps data rate with 15 ns max propagation delay and maintains full dc correctness. Input thresholds scale to 0.7 × VDDx and 0.3 × VDDx, ensuring reliable logic recognition across the entire voltage range without external level-shifting circuitry.

What safety certifications apply to ADUM162N1BRZ?

ADUM162N1BRZ holds UL 1577 (3000 V_RMS, 1 min), DIN EN IEC 60747-17 (VDE 0884-17) reinforced insulation (VIORM = 565 V_peak), IEC/CSA 62368-1, IEC/CSA 60601-1 (1 MOPP), and IEC/CSA 61010-1 approvals. These certifications are verified per production test protocols including 1059 V_peak partial discharge testing and 4200 V_peak surge validation.

How does ADUM162N1BRZ compare to optocouplers in terms of timing performance?

ADUM162N1BRZ achieves 13 ns max propagation delay and ≤4.0 ns channel-to-channel skew at 5 V-over 10× faster and 5× tighter than typical high-speed optocouplers. Its transformer-based iCoupler® architecture eliminates LED aging and temperature drift, delivering stable timing over −40°C to +125°C and 15-year operational life without performance degradation. Pulse width distortion remains <4.5 ns, enabling precise edge alignment in time-sensitive control loops.

Can ADUM162N1BRZ be used for isolated USB or CAN interfaces?

No, ADUM162N1BRZ is not suitable for isolated USB or CAN physical layer interfaces. It is a general-purpose digital isolator with unidirectional channels and no built-in protocol encoding, differential signaling, or bus arbitration logic. While it can isolate individual CAN TX/RX signal lines in custom implementations, it does not meet ISO 11898-2 electrical requirements or provide the common-mode rejection needed for robust CAN bus operation. Dedicated CAN isolators (e.g., ADUM1201 + SN65HVD230) are recommended instead.