Analog Devices Inc. ADUM1100BRZ

Overview

ADUM1100BRZ from Analog Devices is a single-channel digital isolator based on iCoupler® 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, features <18 ns propagation delay, 25 kV/μs common-mode transient immunity, and operates across −40°C to +105°C. It replaces optocouplers in industrial field bus interfaces requiring high-speed, low-power, and dc-correct signal transmission.

For engineers reviewing the ADUM1100BRZ datasheet, ADUM1100BRZ pinout, ADUM1100BRZ application, or ADUM1100BRZ equivalent, this page delivers verified specifications, package mapping, functional role in level-translating isolated interfaces, safety certification details (UL 1577, VDE 0884-17), and real-world selection guidance for industrial automation, motor control, and data acquisition systems.

Technical Context

The ADUM1100BRZ implements monolithic air-core transformer coupling with integrated CMOS interface circuitry on both sides of the isolation barrier. Its patented refresh circuit ensures dc correctness without external components, eliminating optocoupler-style signal decay during static logic states.

It supports asymmetric supply configurations (e.g., 5 V input / 3.3 V output), maintains <2 ns edge asymmetry, and achieves pulse width distortion under 2 ns across temperature - critical for timing-sensitive serial protocols like SPI and RS-485 physical layer signaling.

Key Specifications

Pinout & Package

ADUM1100BRZ is housed in an 8-lead SOIC_N (Small Outline Integrated Circuit, Narrow-body) package, RoHS-compliant, with creepage/clearance ≥4 mm and internal clearance ≥18 μm per IEC 62368-1.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SI8610BB-B-IS and ISO6710DR, ADUM1100BRZ uniquely combines 100 Mbps capability, guaranteed dc correctness, and 25 kV/μs CMTI in an SOIC_N package - making it optimal for high-noise, high-speed industrial interfaces where signal fidelity and long-term stability are non-negotiable.

Availability

ADUM1100BRZ is available at Aetrix Electronics and suitable for industrial automation, motor control, and data acquisition systems requiring stable component supply, long-lifecycle assurance, and certified reinforced isolation.

Supply support for ADUM1100BRZ 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 ADUM1100BRZ belongs to the iCoupler® digital isolator product line, engineered specifically to replace optocouplers in industrial, automotive, and medical systems demanding high speed, low power, and certified safety isolation.

FAQ

What is the maximum data rate supported by ADUM1100BRZ?

The ADUM1100BRZ supports a maximum data rate of 100 Mbps under specified conditions (CL = 15 pF, CMOS signal levels). This rating applies to both 3.3 V and 5 V operation, and is validated per Table 1 and Table 2 in the Rev. L datasheet. At this rate, propagation delay remains under 18 ns and pulse width distortion stays within 2 ns, ensuring reliable high-speed serial communication in applications such as isolated SPI and digital I/O expansion. The ADUM1100BRZ achieves this using iCoupler® transformer technology with integrated refresh logic.

Does ADUM1100BRZ require external components for dc correctness?

No, ADUM1100BRZ does not require external components for dc correctness. It incorporates a patented internal refresh circuit that automatically updates the output state approximately every 1.2 Mbps, ensuring the output remains stable during static input conditions. This eliminates the need for external refresh clocks or periodic toggling required by many optocouplers and competing isolators. The feature is intrinsic to the ADUM1100BRZ design and functions across its full operating temperature range (−40°C to +105°C).

Can ADUM1100BRZ operate with different supply voltages on input and output sides?

Yes, ADUM1100BRZ supports mixed-supply operation: 5 V on VDD1 with 3.3 V on VDD2, or 3.3 V on VDD1 with 5 V on VDD2. Electrical specifications for these configurations are fully characterized in Table 3 of the Rev. L datasheet, including propagation delay (13–26 ns), power consumption, and logic threshold compatibility. This capability enables direct level translation in heterogeneous systems - for example, interfacing a 3.3 V FPGA to a 5 V industrial sensor bus - without external level shifters.

What safety certifications does ADUM1100BRZ hold?

ADUM1100BRZ is certified to UL 1577 (2500 V rms, 1 minute), DIN EN IEC 60747-17 (VDE 0884-17) for reinforced insulation (VIORM = 560 V peak), IEC/EN/CSA 62368-1, IEC/CSA 61010-1, and CQC GB 4943.1. These approvals validate its suitability for end-equipment requiring reinforced isolation, including industrial controls, medical devices, and power conversion systems. The device carries the "*" marking on its package indicating VDE 0884-17 compliance, and all units undergo 100% production partial discharge testing at 1050 V peak.

What is the thermal performance limit of ADUM1100BRZ?

ADUM1100BRZ is rated for operation from −40°C to +105°C ambient temperature. Its junction-to-case thermal resistance is θJCI = 46°C/W (Side 1) and θJCO = 41°C/W (Side 2), with a maximum package power dissipation of 240 mW. Thermal derating curves in Figure 2 of the datasheet define safety-limiting values (e.g., IS1 ≤ 160 mA) versus case temperature. For continuous 100 Mbps operation at 5 V, typical power dissipation is ~1.7 W, requiring adequate PCB copper area or airflow to maintain case temperature below 105°C.