Analog Devices Inc. ADUM250N1BRIZ

Overview

ADUM250N1BRIZ from Analog Devices is a 5-channel, 5.0 kV_RMS reinforced digital isolator using iCoupler® transformer-based technology. It provides bidirectional signal isolation with 150 Mbps guaranteed data rate, 13 ns max propagation delay at 5 V, and 1.8 V to 5.5 V dual-supply operation for level translation across the barrier. It is used in industrial SPI bus isolation where high CMTI (>100 kV/µs) and fail-safe output states are required.

For engineers reviewing the ADUM250N1BRIZ datasheet, ADUM250N1BRIZ pinout, ADUM250N1BRIZ application, or ADUM250N1BRIZ equivalent, this page delivers verified specifications, functional pin mapping, real-world use cases in fieldbus and data converter interfaces, and two validated alternative parts with documented technical and application differences.

Technical Context

The ADUM250N1BRIZ implements five independent unidirectional CMOS-isolated channels using monolithic air-core transformers - not optocouplers - enabling dc-correct output behavior without input transitions. Its architecture supports asymmetric supply configurations (e.g., 1.8 V on side 1, 5 V on side 2), with integrated undervoltage lockout (UVLO) at 1.5 V/1.6 V thresholds on both sides.

It features tight channel-to-channel propagation delay matching (≤4.0 ns codirectional skew), low jitter (70 ps rms at 5 V), and robust noise immunity via 100 kV/µs common-mode transient immunity. The device is rated for continuous operation up to +125°C ambient and meets DIN V VDE V 0884-10 (reinforced) and UL 1577 (5000 V_RMS) safety standards.

Key Specifications

Pinout & Package

ADUM250N1BRIZ uses a 16-lead, RoHS-compliant, wide-body SOIC_IC package (body width 10.3 mm) with creepage/clearance ≥8.3 mm for reinforced isolation. Input-side pins (1–8) and output-side pins (9–16) are physically segregated to maintain isolation integrity.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SI8651ED-B-IS and ISO6751FDWR, ADUM250N1BRIZ uniquely supports 1.8 V operation, achieves 100 kV/µs CMTI, and carries full VDE 0884-10 reinforced certification - making it the only option among the three qualified for high-noise, mixed-voltage, and safety-critical 2 MOPP applications.

Availability

ADUM250N1BRIZ is available at Aetrix Electronics and suitable for industrial motor drives, isolated data acquisition systems, and fieldbus node designs requiring stable component supply, long-lifecycle support, and certified reinforced isolation.

Supply support for ADUM250N1BRIZ 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, headquartered in Norwood, MA.

The ADuM250N/ADuM251N/ADuM252N family was designed specifically for high-reliability, multi-channel digital isolation in industrial automation, energy infrastructure, and medical equipment where safety certification, noise immunity, and timing precision are non-negotiable.

FAQ

What is the maximum guaranteed data rate for ADUM250N1BRIZ?

The ADUM250N1BRIZ guarantees a maximum data rate of 150 Mbps under all operating conditions, as confirmed in the datasheet Table 1 through Table 8 across 1.8 V, 2.5 V, 3.3 V, and 5 V supply configurations. Higher rates may be achievable in specific layouts but are not production-tested or warranted. This 150 Mbps rating applies to all five channels simultaneously in ADUM250N1BRIZ.

Does ADUM250N1BRIZ support 1.8 V logic on both sides of the isolation barrier?

Yes, ADUM250N1BRIZ supports 1.8 V operation on either side (VDD1 or VDD2) independently, with full specification compliance including 15 ns max propagation delay and 150 Mbps data rate at 1.8 V. Its 1.7 V to 5.5 V supply range per side enables true level translation - for example, interfacing a 1.8 V FPGA I/O bank to a 5 V microcontroller bus using ADUM250N1BRIZ.

How does the fail-safe output configuration work on ADUM250N1BRIZ?

ADUM250N1BRIZ offers user-selectable fail-safe outputs that transition to a predetermined logic state (high or low) when VDD1 is lost or drops below UVLO threshold (1.5 V). This behavior is implemented in hardware and requires no external circuitry. For ADUM250N1BRIZ, the '1' suffix denotes the N1 variant with defined fail-safe low output - ensuring safe deactivation of downstream drivers during primary-side power failure.

What safety certifications does ADUM250N1BRIZ hold?

ADUM250N1BRIZ is certified to UL 1577 (5000 V_RMS, 1 min), CSA Component Acceptance Notice 5A, VDE V 0884-10 (reinforced, VIORM = 849 V_PEAK), and CQC GB4943.1-2011. The '*' marking on the package confirms VDE 0884-10 compliance. These approvals support its use in 2 MOPP medical (IEC 60601-1 Ed3) and industrial safety-critical systems.

Can ADUM250N1BRIZ replace optocouplers in existing designs without layout changes?

ADUM250N1BRIZ uses a standard 16-lead wide-body SOIC_IC footprint (10.3 mm body width) with identical pad layout to legacy optocoupler-based isolators like HCPL-0900. However, due to its higher speed and lower drive requirements, PCB routing should minimize stubs and ensure controlled impedance for >50 Mbps operation. No layer or pad changes are needed, but signal integrity review is recommended for >100 Mbps use of ADUM250N1BRIZ.