Analog Devices Inc. ADUM252N0BRIZ

Overview

ADUM252N0BRIZ from Analog Devices is a 5-channel, 5.0 kV_RMS digital isolator based on iCoupler® transformer technology, designed for high-noise industrial interfaces. It supports 150 Mbps data rate, 1.8 V to 5.5 V dual-supply operation with level translation, and features fail-safe low output configuration (N0 variant). It is used in SPI isolation for isolated ADC/DAC systems requiring precise timing and robust noise immunity.

For engineers reviewing the ADUM252N0BRIZ datasheet, ADUM252N0BRIZ pinout, ADUM252N0BRIZ application, or ADUM252N0BRIZ equivalent, this page delivers verified specifications, functional pin mapping, real-world use cases, and validated alternative options - all aligned to the ADUM252N0BRIZ's N0 fail-safe-low configuration and SOIC_IC wide-body package.

Technical Context

The ADUM252N0BRIZ implements five independent unidirectional isolation channels using monolithic air-core transformers and CMOS interface circuitry. Its architecture ensures DC-correct output states without input transitions and supports asymmetric supply configurations (e.g., 1.8 V side 1 / 5 V side 2) with full voltage translation.

It delivers tight channel-to-channel propagation delay matching (≤4.0 ns codirectional skew), <4.5 ns pulse width distortion at 5 V, and 100 kV/µs common-mode transient immunity. The N0 variant asserts outputs LOW when input-side power is absent - critical for safety-critical shutdown sequences in motor drives and PLC I/O modules.

Key Specifications

Pinout & Package

ADUM252N0BRIZ uses a 16-lead, RoHS-compliant, wide-body SOIC_IC package (body width 10.3 mm) with creepage/clearance ≥8.3 mm - certified for reinforced insulation per DIN V VDE V 0884-10.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SI8650BB-B-IS and ISO6751-Q1, ADUM252N0BRIZ uniquely combines 150 Mbps speed, N0-defined fail-safe LOW behavior, and VDE-certified 849 V_PEAK working voltage - making it the only option qualified for safety-critical, high-speed industrial isolation without external circuitry.

Availability

ADUM252N0BRIZ is available at Aetrix Electronics and suitable for industrial motor control, PLC I/O modules, and isolated data acquisition systems requiring stable component supply, long-term lifecycle support, and certified reinforced insulation.

Supply support for ADUM252N0BRIZ 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 since 1965.

The ADuM25xx family was engineered specifically for multichannel, high-speed, safety-certified digital isolation in harsh industrial environments - emphasizing low jitter, fail-safe reliability, and seamless voltage translation.

FAQ

What is the fail-safe behavior of ADUM252N0BRIZ?

The ADUM252N0BRIZ is the N0 variant, meaning all five outputs default to LOW when VDD1 (input-side supply) is unpowered or drops below UVLO threshold (1.5 V). This behavior is hardwired and does not require external components. It ensures safe shutdown of downstream circuits like gate drivers or analog switches in power-loss scenarios - a key requirement in IEC 61508-compliant systems. ADUM252N0BRIZ maintains this behavior across its full −40°C to +125°C operating range.

Does ADUM252N0BRIZ support 1.8 V operation on both sides?

Yes, ADUM252N0BRIZ operates with VDD1 and VDD2 independently set from 1.7 V to 5.5 V. At 1.8 V supply, it guarantees 150 Mbps data rate, 15 ns max propagation delay, and 100 kV/µs common-mode immunity. Input thresholds scale to 0.7×VDDx and 0.3×VDDx, ensuring robust noise margins. This makes ADUM252N0BRIZ ideal for interfacing 1.8 V FPGAs or microcontrollers with 3.3 V or 5 V peripherals without level-shifting circuitry.

What safety certifications apply to ADUM252N0BRIZ?

ADUM252N0BRIZ holds pending certifications for UL 1577 (5000 V_RMS), CSA Component Acceptance Notice 5A, VDE V 0884-10 (VIORM = 849 V_PEAK), and CQC GB4943.1-2011. It is rated for reinforced insulation and meets 2 MOPP requirements per IEC 60601-1 Ed.3+A1. The "*" marking on the package confirms VDE V 0884-10 compliance. All certifications apply specifically to the ADUM252N0BRIZ in its SOIC_IC wide-body package.

How does ADUM252N0BRIZ compare to ADUM251N0BRIZ in pinout and function?

ADUM252N0BRIZ and ADUM251N0BRIZ share identical 16-pin SOIC_IC pinouts and package dimensions, but differ in channel directionality: ADUM252N0BRIZ has four channels from side 1 to side 2 and one channel from side 2 to side 1 (A–D: input→output, E: output→input), whereas ADUM251N0BRIZ has three forward and two reverse channels. This makes ADUM252N0BRIZ optimal for SPI master-slave interfaces needing four upstream signals (SCLK, MOSI, CS, BUSY) and one downstream (MISO).

Can ADUM252N0BRIZ replace optocouplers in existing designs?

Yes - ADUM252N0BRIZ replaces 5-channel optocoupler stacks (e.g., six 1-channel HCPL-0723 devices) with superior performance: 150 Mbps vs. ≤10 Mbps, 13 ns vs. >100 ns propagation delay, and 100 kV/µs vs. ~15 kV/µs CMTI. Its 16-pin SOIC_IC footprint matches industry-standard wide-body layouts. No changes to PCB land pattern are needed, though decoupling capacitor placement near VDD1/VDD2 pins is required per Analog Devices' layout guidelines for ADUM252N0BRIZ.