Analog Devices Inc. ADUM250N1BRIZ-RL

Overview

ADUM250N1BRIZ-RL 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 operation are required.

For engineers reviewing the ADUM250N1BRIZ-RL datasheet, ADUM250N1BRIZ-RL pinout, ADUM250N1BRIZ-RL application, or ADUM250N1BRIZ-RL equivalent, key selection criteria include reinforced 5.0 kV_RMS isolation rating, channel configuration (5-channel, all inputs on side 1), fail-safe high output option (N1 variant), wide supply range (1.7–5.5 V), and SOIC_IC wide-body package compatibility with PCB creepage/clearance requirements.

Technical Context

The ADUM250N1BRIZ-RL implements five independent unidirectional CMOS-isolated channels using monolithic air-core transformers, enabling dc-correct operation without input transitions. Its architecture ensures tight channel-to-channel propagation delay matching (≤4.0 ns codirectional skew) and low pulse width distortion (≤4.5 ns).

It features dual independent supply domains (VDD1/VDD2), undervoltage lockout (1.5 V/1.6 V thresholds), and two fail-safe output states-this N1 variant defaults to logic high when input power is lost. Safety compliance includes pending VDE V 0884-10 (VIORM = 849 V_peak) and UL 1577 (5000 V_RMS/1 min).

Key Specifications

Pinout & Package

ADUM250N1BRIZ-RL uses a 16-lead, RoHS-compliant, wide-body SOIC_IC package (body width 10.3 mm) with 8.3 mm minimum creepage and clearance for reinforced insulation.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 5-channel digital isolator applications.

Compared with ADUM250N1BRIZ-RL, the ADUM250N0BRIZ-RL offers identical performance except fail-safe polarity, while SI8650BB-B-IS trades 5 ns higher delay and 25 kV/µs lower CMTI for potentially lower unit cost - both require revalidation of timing margins and noise immunity in target systems.

Availability

ADUM250N1BRIZ-RL is available at Aetrix Electronics and suitable for industrial automation, renewable energy inverters, and medical diagnostics requiring stable component supply with long-term lifecycle assurance.

Supply support for ADUM250N1BRIZ-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, headquartered in Norwood, MA.

The ADuM250N/251N/252N family was designed specifically for high-noise industrial and medical applications demanding reinforced isolation, precise timing, and fail-safe behavior - extending iCoupler® technology into 5-channel, high-speed, low-power use cases.

FAQ

What is the fail-safe output behavior of ADUM250N1BRIZ-RL?

The ADUM250N1BRIZ-RL is the N1 variant, meaning its outputs default to logic high when VDD1 (input-side supply) is absent or below UVLO threshold. This behavior is hardwired and does not require external components. The ADUM250N1BRIZ-RL maintains this state until VDD1 is restored above 1.6 V, ensuring predictable fault signaling in power-loss scenarios common in motor drives and PLCs.

Does ADUM250N1BRIZ-RL support 1.8 V operation on both sides?

Yes, ADUM250N1BRIZ-RL operates with VDD1 and VDD2 independently set from 1.7 V to 5.5 V. At 1.8 V, it delivers 15 ns max propagation delay and 150 Mbps data rate, with input thresholds scaled to 0.7×VDDx and 0.3×VDDx. This enables direct interfacing between 1.8 V FPGAs and 3.3 V isolated ADCs without level-shifting circuitry.

What safety certifications apply to ADUM250N1BRIZ-RL?

ADUM250N1BRIZ-RL carries pending certifications for UL 1577 (5000 V_RMS/1 min), VDE V 0884-10 (reinforced, VIORM = 849 V_peak), CSA Component Acceptance Notice 5A, and CQC GB4943.1-2011. Its 8.3 mm creepage/clearance and material group II construction meet IEC 61010-1 and IEC 60601-1 2 MOPP requirements when applied within rated working voltages.

How does ADUM250N1BRIZ-RL compare to optocouplers in timing performance?

ADUM250N1BRIZ-RL achieves 13 ns max propagation delay and ≤4.5 ns pulse width distortion at 5 V - over 10× faster and 5× tighter than typical high-speed optocouplers. Its transformer-based iCoupler® architecture eliminates LED turn-on/turn-off delays and temperature-dependent aging, delivering stable timing across −40°C to +125°C without recalibration.

Can ADUM250N1BRIZ-RL be used for isolated USB or CAN interfaces?

No - ADUM250N1BRIZ-RL is a general-purpose unidirectional digital isolator with no built-in USB transceiver or CAN protocol logic. It can isolate individual USB D+/D− or CAN H/L signal lines only when paired with external PHYs and protocol controllers, but lacks integrated termination, slew-rate control, or differential receiver functionality required for compliant USB/CAN physical layer operation.