Analog Devices Inc. ADUM1100URZ-RL7

Overview

ADUM1100URZ-RL7 from Analog Devices is a single-channel digital isolator based on iCoupler® monolithic air-core transformer technology, providing reinforced galvanic isolation between input and output domains. It supports up to 100 Mbps data rate at 3.3 V or 5 V operation, delivers <28 ns propagation delay (3.3 V), maintains dc correctness via patented refresh circuitry, and operates across −40°C to +125°C - enabling use in industrial motor drives with high common-mode noise.

For engineers reviewing the ADUM1100URZ-RL7 datasheet, ADUM1100URZ-RL7 pinout, ADUM1100URZ-RL7 application, or ADUM1100URZ-RL7 equivalent, key selection criteria include its 125°C max operating temperature, 560 V_peak reinforced insulation rating per VDE 0884-17, 25 kV/μs common-mode transient immunity, and compatibility with mixed-voltage level translation (3.3 V ↔ 5 V).

Technical Context

The ADUM1100URZ-RL7 implements a single unidirectional signal channel using transformer-coupled isolation with integrated CMOS interface circuitry on both sides. Its architecture enables true dc-correct output behavior without external refresh components, unlike optocouplers, and achieves sub-2 ns pulse width distortion at 25°C under 5 V operation.

It features dual independent supply domains (VDD1/VDD2), allowing asymmetric voltage operation (e.g., 3.3 V input / 5 V output), and meets reinforced insulation requirements per DIN EN IEC 60747-17 (VDE 0884-17) with VIORM = 560 V_peak, certified for safety-critical industrial and medical applications.

Key Specifications

Pinout & Package

ADUM1100URZ-RL7 is housed in an 8-lead SOIC_N (Small Outline Integrated Circuit, Narrow-body) package, RoHS-compliant, with creepage and clearance distances meeting IEC 62368-1 Pollution Degree 2 requirements.

Key Features

Applications

Equivalent & Alternatives

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

Compared with Si8600BD-B-IS and ISO6710DR, ADUM1100URZ-RL7 uniquely combines 100 Mbps speed, 125°C operation, and VDE 0884-17 reinforced certification - making it the only option among the three qualified for high-reliability industrial safety barriers requiring both performance and regulatory compliance.

Availability

ADUM1100URZ-RL7 is available at Aetrix Electronics and suitable for industrial motor control, medical sensor interface, programmable logic controller I/O, and renewable energy inverter control requiring stable component supply across extended temperature and safety-critical environments.

Supply support for ADUM1100URZ-RL7 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 Wilmington, MA.

The ADuM1100 series belongs to Analog Devices' iCoupler® digital isolator product line, designed specifically to replace optocouplers in high-speed, high-reliability industrial, medical, and energy systems requiring certified galvanic isolation.

FAQ

What is the maximum operating temperature of the ADUM1100URZ-RL7?

The ADUM1100URZ-RL7 is rated for continuous operation from −40°C to +125°C ambient temperature, as confirmed in Table 8 of the Rev. L datasheet. This 125°C rating distinguishes it from the ADUM1100AR (105°C) and ADUM1100BR (105°C) variants, and is validated under full electrical specifications including 100 Mbps data rate and 560 V_peak reinforced isolation.

Does the ADUM1100URZ-RL7 support level translation between 3.3 V and 5 V domains?

Yes, the ADUM1100URZ-RL7 supports mixed-voltage operation: VDD1 may be 3.3 V while VDD2 is 5 V (or vice versa), as specified in Table 3 of the datasheet. This enables bidirectional level translation across the isolation barrier without external components, with defined VOH/VOL performance under both 3 V/5 V and 5 V/3 V configurations.

What safety certifications does the ADUM1100URZ-RL7 hold?

The ADUM1100URZ-RL7 holds UL 1577 (2500 V_rms/1 min), DIN EN IEC 60747-17 (VDE 0884-17) for reinforced insulation (VIORM = 560 V_peak), IEC/EN/CSA 62368-1, and IEC/CSA 61010-1. These are explicitly listed in Table 5 and Table 7 of the Rev. L datasheet, with production-level partial discharge testing at 1050 V_peak.

How does the ADUM1100URZ-RL7 ensure DC correctness without external refresh circuitry?

The ADUM1100URZ-RL7 incorporates a patented internal refresh feature that continuously monitors and updates the output state during static input conditions. As described in the General Description section, this eliminates output drift seen in optocouplers and guarantees dc-correct behavior - verified by the truth table (Table 10) showing VO returns to VI state within 1 μs after power restoration.

What is the common-mode transient immunity (CMTI) specification for the ADUM1100URZ-RL7?

The ADUM1100URZ-RL7 has a minimum common-mode transient immunity of 25 kV/μs, with typical performance up to 35 kV/μs, measured at logic low/high output states under VCM = 1000 V with 800 V transient magnitude. This value is consistent across all operating voltages (3.3 V, 5 V, and mixed) and is specified in Tables 1–3 of the Rev. L datasheet.