Analog Devices Inc. ADUM4150ARIZ

Overview

ADUM4150ARIZ from Analog Devices is a 6-channel, 5 kV reinforced digital isolator optimized for isolated SPI interfaces, featuring four high-speed SPI signal channels (MCLK, MO/SI, MI/SO, MSS), two unidirectional 250 kbps data channels (VIA/VIB), and a dedicated delay clock (DCLK) supporting up to 40 MHz operation in delay clock mode. It operates across −40°C to +125°C with 25 kV/µs common-mode transient immunity and is packaged in a 20-lead SOIC_IC with 8.3 mm creepage for industrial PLC and sensor isolation applications.

For engineers reviewing the ADUM4150ARIZ datasheet, ADUM4150ARIZ pinout, ADUM4150ARIZ application, or ADUM4150ARIZ equivalent, this page delivers verified specifications including propagation delay (13 ns typ. for fast channels), clock delay error (±12 ns max), isolation rating (5000 V rms), VIORM (645 V peak), and regulatory compliance per DIN EN IEC 60747-17 (VDE 0884-17), UL 1577, and IEC 62368-1.

Technical Context

The ADUM4150ARIZ implements iCoupler® chip-scale transformer isolation with separate high-speed and low-speed channel architectures: four bidirectional SPI signal paths use edge-detection and pulse encoding for ≤13 ns propagation delay and 1 ns jitter, while two independent slow channels serialize data at 250 kbps with 2.5 µs jitter and support asynchronous sampling via internal clocking.

Its delay clock (DCLK) output on the primary side enables 40 MHz SPI clock performance by compensating for round-trip propagation delays (tPMCLK + tPSO), with clock delay error bounded to ±12 ns; the device supports mixed-supply operation (3.3 V/5 V or 5 V/3.3 V) and includes glitch filtering on MSS for robust slave-select timing in noisy industrial environments.

Key Specifications

Pinout & Package

ADUM4150ARIZ is housed in a 20-lead SOIC_IC package with 8.3 mm creepage and reinforced insulation. Pin numbering follows standard SOIC layout (Pin 1 = VDD1, Pin 10 = GND1, Pin 11 = VDD2, Pin 20 = GND2), with inputs on Side 1 (VDD1 domain) and outputs on Side 2 (VDD2 domain).

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADUM4150ARIZ, ADUM4151ARIZ omits delay clock capability-limiting SPI speed to 17 MHz without compensation-while ADUM3150ARIZ reduces isolation strength and regulatory scope, making neither a drop-in replacement where 5 kV, DCLK, or IEC 60601-1 compliance is mandatory.

Availability

ADUM4150ARIZ is available at Aetrix Electronics and suitable for industrial programmable logic controllers (PLCs), sensor isolation interfaces, motor drive feedback systems, and isolated power supply monitoring requiring stable component supply, long-term lifecycle support, and certified safety compliance.

Supply support for ADUM4150ARIZ 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 leader specializing in high-performance analog, mixed-signal, and digital signal processing technologies for precision instrumentation, industrial automation, and communications infrastructure.

The ADuM4150 product line delivers reinforced digital isolation for SPI interfaces in harsh environments, designed specifically to replace optocouplers in industrial PLCs, motor drives, and medical equipment where reliability, timing accuracy, and safety certification are critical.

FAQ

What is the maximum SPI clock rate supported by ADUM4150ARIZ in delay clock mode?

ADUM4150ARIZ supports up to 40 MHz SPI clock rate in delay clock mode, achieved through its dedicated DCLK output that compensates for round-trip propagation delay (tPMCLK + tPSO). This capability is confirmed in the datasheet Rev. E, Table 2 and General Description section, and applies specifically to the ADUM4150ARIZ variant with 5 kV isolation and SOIC_IC packaging.

Does ADUM4150ARIZ support mixed-voltage operation between 3.3 V and 5 V domains?

Yes, ADUM4150ARIZ supports mixed-voltage operation with VDD1 and VDD2 independently configurable from 3.0 V to 5.5 V, including 3.3 V/5 V and 5 V/3.3 V configurations. Electrical characteristics for these modes are fully specified in Tables 6 and 8 of the Rev. E datasheet, confirming functional interoperability without level shifters.

What safety certifications does ADUM4150ARIZ hold?

ADUM4150ARIZ holds UL 1577 (5000 V rms, 1 min), DIN EN IEC 60747-17 (VDE 0884-17) for reinforced insulation (VIORM = 645 V peak), IEC/EN/CSA 62368-1, IEC/CSA 60601-1 (2 MOPP), and IEC/CSA 61010-1. These are explicitly listed in Table 11 and Regulatory Information sections of the Rev. E datasheet.

How many isolation channels does ADUM4150ARIZ provide, and what are their data rates?

ADUM4150ARIZ provides six total isolation channels: four high-speed bidirectional SPI signal channels (MCLK, MSS, MO/SI, MI/SO) operating up to 40 Mbps, and two unidirectional low-speed channels (VIA, VIB) at 250 kbps. This channel count and rate allocation are defined in the Features and General Description sections of the Rev. E datasheet.

What is the purpose of the DCLK pin on ADUM4150ARIZ?

The DCLK pin on ADUM4150ARIZ outputs a delayed version of the master clock synchronized to compensate for round-trip propagation delay (tPMCLK + tPSO), enabling 40 MHz SPI operation without external timing adjustments. Its clock delay error is bounded to ±12 ns, as specified in Table 2 of the Rev. E datasheet under "DCLK" parameters.