Analog Devices Inc. ADUM4153ARIZ

Overview

ADuM4153ARIZ from Analog Devices is a 7-channel SPIsolator™ digital isolator optimized for isolated SPI bus interfaces in industrial control systems. It provides four high-speed bidirectional SPI signal channels (MCLK, MO/SI, MI/SO, MSS) supporting up to 17 MHz clock rate with 14 ns propagation delay and 1 ns jitter, plus three unidirectional 250 kbps data channels (VIA/VIB/VIC → VOA/VOB/VOC), all in a reinforced 5 kV_rms isolation barrier. It operates across −40°C to +125°C and supports mixed 3.3 V/5 V supply configurations.

For engineers reviewing the ADuM4153ARIZ datasheet, ADuM4153ARIZ pinout, ADuM4153ARIZ application, or ADuM4153ARIZ equivalent, this device is selected for high-reliability SPI isolation where timing-critical clock/data integrity, high common-mode transient immunity (>25 kV/µs), regulatory compliance (UL, VDE, IEC 62368-1, IEC 60601-1), and extended temperature operation are required.

Technical Context

The ADuM4153ARIZ implements iCoupler® chip-scale transformer technology to achieve galvanic isolation without optocouplers or external magnetics. Its four fast channels use dedicated high-speed circuitry with glitch filtering on MSS, while three slow channels employ serialized sampling at 250 kbps with ≤2.5 µs jitter - enabling simultaneous high- and low-speed signal transfer across the barrier.

It features dual-supply operation (VDD1 and VDD2 independently configurable from 3.0 V to 5.5 V), undervoltage lockout at 2.6 V, and reinforced insulation rated to VIORM = 645 V_peak per DIN EN IEC 60747-17 (VDE 0884-17), meeting medical (1 MOPP) and industrial safety standards.

Key Specifications

Pinout & Package

ADuM4153ARIZ is housed in a 20-lead SOIC_IC package with 8.3 mm creepage and clearance, optimized for high-voltage isolation in compact PCB layouts.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADuM4151ARIZ and ISO6741QDWR, the ADuM4153ARIZ uniquely combines SPI-optimized channel assignment, MSS glitch filtering, and certified reinforced isolation in a single SOIC-20 package - making it the preferred choice for production-grade industrial and medical SPI isolation where timing, safety, and integration are co-constrained.

Availability

ADuM4153ARIZ is available at Aetrix Electronics and suitable for industrial PLCs, motor drive control interfaces, high-accuracy sensor isolation, and medical diagnostic equipment requiring stable component supply across extended temperature and safety-certified operation.

Supply support for ADuM4153ARIZ 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 ADuM4153ARIZ belongs to the SPIsolator™ family - engineered specifically to replace optocoupler-based SPI isolation with superior speed, timing accuracy, and safety certification for demanding real-time control systems.

FAQ

What is the maximum SPI clock frequency supported by the ADuM4153ARIZ?

The ADuM4153ARIZ supports up to 17 MHz SPI clock rate under 5 V operation, with guaranteed timing performance including 14 ns typical propagation delay and ≤3 ns pulse width distortion. This enables full-speed communication with modern microcontrollers and high-resolution ADCs without added timing margin overhead. The ADuM4153ARIZ maintains this specification across its full operating temperature range of −40°C to +125°C.

Does the ADuM4153ARIZ support mixed-voltage operation between primary and secondary sides?

Yes, the ADuM4153ARIZ supports independent supply voltages on each side: VDD1 and VDD2 can each be set from 3.0 V to 5.5 V, enabling mixed 3.3 V/5 V configurations (e.g., 3.3 V MCU side and 5 V peripheral side). Electrical characteristics including propagation delay and data rate are validated for 3.3 V/5 V and 5 V/3.3 V operation per Tables 7 and 10 in the datasheet. The ADuM4153ARIZ requires no external level-shifting circuitry.

How many isolation channels does the ADuM4153ARIZ provide, and what are their speed grades?

The ADuM4153ARIZ provides seven total isolation channels: four high-speed bidirectional SPI signal channels (MCLK, MO/SI, MI/SO, MSS) rated up to 17 MHz, and three unidirectional low-speed data channels (VIA/VIB/VIC → VOA/VOB/VOC) operating at 250 kbps. All channels share the same 5 kV_rms reinforced isolation barrier. The ADuM4153ARIZ uses serialized sampling for slow channels, resulting in ≤2.5 µs jitter - distinct from its 1 ns jitter on fast paths.

What safety certifications apply to the ADuM4153ARIZ?

The ADuM4153ARIZ is certified to 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 (1 MOPP), and IEC/CSA 61010-1. These approvals are verified per manufacturer test reports and listed in Table 14 of the datasheet. The ADuM4153ARIZ meets 8.3 mm creepage and clearance requirements for pollution degree 2 at altitudes ≤2000 m.

Can the ADuM4153ARIZ replace optocouplers in existing SPI isolation designs?

Yes, the ADuM4153ARIZ is designed as a direct functional replacement for optocoupler-based SPI isolation solutions, offering superior performance: 14 ns propagation delay vs. typical 100+ ns for optos, no LED aging or CTR variation, and guaranteed timing over temperature. Its pin-compatible SOIC-20 footprint and integrated channel mapping simplify drop-in upgrades. However, layout must observe minimum creepage/clearance (8.3 mm) and avoid NC pins - details confirmed in the ADuM4153ARIZ datasheet Section "Pin Configurations and Function Descriptions".