Analog Devices Inc. ADUM252N1BRIZ

Overview

ADUM252N1BRIZ from Analog Devices is a 5-channel, 5.0 kV_RMS digital isolator based on iCoupler® monolithic air-core transformer technology. It provides bidirectional signal isolation with 150 Mbps guaranteed data rate, 13 ns max propagation delay at 5 V, and fail-safe high/low output options for industrial SPI/data converter interfaces.

For engineers reviewing the ADUM252N1BRIZ datasheet, ADUM252N1BRIZ pinout, ADUM252N1BRIZ application, or ADUM252N1BRIZ equivalent, this device supports robust multichannel isolation in high-noise environments requiring reinforced insulation (VIORM = 849 V_peak), wide supply range (1.7–5.5 V), and precise channel-to-channel timing matching (≤4.0 ns).

Technical Context

The ADUM252N1BRIZ implements five independent CMOS-isolated channels using stacked transformer-based encoding/decoding circuitry, enabling dc-correct operation without input transitions. Its architecture ensures tight propagation delay skew (≤4.0 ns codirectional) and low jitter (70 ps rms at 5 V), critical for synchronized SPI clock/data integrity across isolation barriers.

It features dual-supply operation (VDD1/VDD2) with independent 1.7–5.5 V rails, supporting level translation and fail-safe output states during power loss. Safety compliance includes UL 1577 (5000 V_RMS/1 min), VDE V 0884-10 (reinforced), and CQC GB4943.1-2011 certification - all verified for the RI-16 wide-body SOIC_IC package.

Key Specifications

Pinout & Package

ADUM252N1BRIZ uses a 16-lead, RoHS-compliant, wide-body SOIC_IC package (RI-16) with 8.3 mm creepage/clearance, optimized for reinforced insulation and high-voltage PCB layout.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SI8651ED-B-IS and ISO6751-Q1, ADUM252N1BRIZ delivers superior timing precision (4.0 ns channel match), higher guaranteed data rate (150 Mbps), and configurable fail-safe outputs - making it optimal for industrial automation and energy infrastructure where deterministic timing and safety-state control are mandatory.

Availability

ADUM252N1BRIZ is available at Aetrix Electronics and suitable for industrial PLCs, solar inverters, motor drives, and medical monitoring equipment requiring stable component supply, long-term lifecycle support, and certified reinforced isolation.

Supply support for ADUM252N1BRIZ 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.

The ADuM25xx family was designed specifically for high-reliability, multichannel digital isolation in harsh electromagnetic environments - emphasizing timing accuracy, safety certification, and wide supply flexibility for next-generation power electronics and factory automation.

FAQ

What is the maximum guaranteed data rate for ADUM252N1BRIZ?

The ADUM252N1BRIZ has a maximum guaranteed data rate of 150 Mbps across all five channels, validated per datasheet Table 1 under 5 V operation with CL = 15 pF loading. Higher rates may be achievable but are not production-tested or specified. This rating ensures reliable SPI, digital I/O, and serial interface isolation in demanding industrial applications where timing margins are critical.

Does ADUM252N1BRIZ support level translation between different supply voltages?

Yes, ADUM252N1BRIZ supports true bidirectional level translation: VDD1 and VDD2 operate independently over 1.7 V to 5.5 V each. For example, it can isolate a 1.8 V FPGA I/O bank (VDD1) from a 3.3 V ADC interface (VDD2) while maintaining full 150 Mbps throughput and logic compatibility - confirmed in Electrical Characteristics tables for 1.8 V, 2.5 V, 3.3 V, and 5 V operation.

What safety certifications apply to ADUM252N1BRIZ?

ADUM252N1BRIZ holds pending UL recognition (5000 V_RMS/1 min per UL 1577), CSA Component Acceptance Notice 5A, VDE V 0884-10 certification (VIORM = 849 V_peak, reinforced), and CQC GB4943.1-2011 approval. These are verified for the RI-16 wide-body SOIC_IC package and documented in the Insulation and Safety Related Specifications section of the Rev. A datasheet.

How does the fail-safe feature work on ADUM252N1BRIZ?

The ADUM252N1BRIZ offers selectable fail-safe output states (high or low) when the input-side power (VDD1) is absent or drops below UVLO threshold (1.5 V). This behavior is implemented via internal circuitry that forces outputs VOx to the preconfigured state without external components - a key requirement for safety interlocks in industrial shutdown circuits and medical alarm systems.

What is the channel-to-channel propagation delay matching specification for ADUM252N1BRIZ?

ADUM252N1BRIZ guarantees ≤4.0 ns maximum propagation delay skew (tPSKCD) between any two codirectional channels at 5 V, −40°C to +125°C. This value is measured under worst-case conditions and ensures deterministic timing alignment for parallel data buses, encoder interfaces, and multi-sensor synchronization - directly specified in Table 1 (5 V Operation) of the Rev. A datasheet.