Analog Devices Inc. ADUM4150BRIZ-RL

Overview

ADUM4150BRIZ-RL 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, MSS, MO/SI, MI/SO), 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 20-lead SOIC_IC package with 8.3 mm creepage.

For engineers reviewing the ADUM4150BRIZ-RL datasheet, ADUM4150BRIZ-RL pinout, ADUM4150BRIZ-RL application, or ADUM4150BRIZ-RL equivalent, key selection criteria include SPI clock rate support (up to 17 MHz native / 40 MHz with DCLK), channel count and directionality (4 fast bidirectional + 2 slow unidirectional), isolation rating (5 kV rms), regulatory compliance (UL1577, VDE 0884-17, IEC 62368-1), and thermal performance at 125°C ambient.

Technical Context

The ADUM4150BRIZ-RL implements iCoupler® chip-scale transformer isolation across six independent channels: four high-speed SPI signals (MCLK, MSS, MO/SI, MI/SO) with ≤24 ns propagation delay and ≤1 ns jitter, plus two low-speed unidirectional data channels (VIA, VIB) operating at 250 kbps with 2.5 µs jitter. Its delay clock (DCLK) output enables primary-side timing compensation to achieve 40 MHz SPI clocking by offsetting round-trip propagation delays.

It supports mixed-voltage operation (3.3 V/5 V or 5 V/3.3 V across sides), features glitch-filtered MSS input, and delivers reinforced insulation rated at VIORM = 645 V peak per DIN EN IEC 60747-17 (VDE 0884-17), with safety certification for industrial, medical (60601-1), and measurement (61010-1) applications.

Key Specifications

Pinout & Package

ADUM4150BRIZ-RL uses a 20-lead wide-body SOIC_IC package (SOIC_W) with gull-wing leads, 1.27 mm pitch, and 8.3 mm minimum creepage distance between input and output sides. Pin 1 is marked with a dot; Side 1 (VDD1) contains pins 1–10, Side 2 (VDD2) contains pins 11–20.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADUM4150BRIZ-RL, ADUM4151BRIZ-RL omits delay-clock capability-reducing maximum SPI clock to 17 MHz-while ADUM3150ARIZ-RL trades 5 kV isolation and medical certification for lower cost and footprint compatibility; all three share identical SOIC_IC packaging and core SPI channel functionality.

Availability

ADUM4150BRIZ-RL is available at Aetrix Electronics and suitable for industrial programmable logic controllers (PLC), isolated sensor interfaces, medical instrumentation, and smart energy metering requiring stable component supply, long-term lifecycle assurance, and certified reinforced isolation.

Supply support for ADUM4150BRIZ-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 semiconductor leader specializing in high-performance analog, mixed-signal, and digital signal processing technologies for precision, power, and connectivity applications.

The ADuM4150 product line delivers SPI-specific digital isolators using iCoupler® transformer technology, designed for high-speed, low-jitter, safety-certified isolation in industrial automation, medical devices, and energy infrastructure.

FAQ

What is the maximum SPI clock frequency supported by ADUM4150BRIZ-RL?

ADUM4150BRIZ-RL supports up to 17 MHz SPI clock frequency in standard 4-wire mode. When using the integrated delay clock (DCLK) output with appropriate primary-side timing compensation, it achieves up to 40 MHz SPI clock operation - confirmed in the datasheet's switching specifications tables for both 5 V and mixed-voltage configurations.

Does ADUM4150BRIZ-RL support mixed-voltage operation between its two sides?

Yes, ADUM4150BRIZ-RL supports mixed-voltage operation: VDD1 can be 3.3 V while VDD2 is 5 V, or vice versa. Electrical characteristics for these configurations are explicitly specified in Tables 6 and 8 of the datasheet, including SPI clock rates, propagation delays, and supply currents across A and B speed grades.

How does the DCLK pin function in ADUM4150BRIZ-RL?

The DCLK pin on ADUM4150BRIZ-RL outputs a delayed version of the MCLK signal, timed to compensate for round-trip propagation delay (tPMCLK + tPSO). This enables synchronous 40 MHz SPI clocking on the primary side without external timing circuitry - a key differentiator versus standard SPI isolators like ADUM4151BRIZ-RL.

What safety certifications apply to ADUM4150BRIZ-RL?

ADUM4150BRIZ-RL 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 documented in Table 11 and Insulation Characteristics sections of the Rev. E datasheet.

Can ADUM4150BRIZ-RL replace optocoupler-based SPI isolation solutions?

Yes, ADUM4150BRIZ-RL replaces discrete optocoupler-based SPI isolation with superior performance: it delivers 13 ns typical propagation delay (vs. >100 ns for optos), 1 ns jitter (vs. >10 ns), guaranteed channel matching, and integrated DCLK for 40 MHz operation - all in a single 20-pin SOIC package with certified 5 kV isolation.