company blog about Mingjiada Supplies ADUM3160 Full-Speed/Low-Speed USB Digital Isolators—Providing Reliable Isolation Solutions for Industrial Control, Medical Devices, and USB Interface Protection

Introduction: In applications with stringent electrical safety requirements—such as industrial automation, medical equipment, and data acquisition systems—electrical isolation for USB interfaces has long been a design challenge for engineers. Mingjiada Electronics is now offering Analog Devices’ (ADI) ADUM3160 full-speed/low-speed USB digital isolator, providing a cost-effective, genuine solution for your USB interface isolation design.

I. Product Overview

The ADUM3160 is a USB port isolator developed by Analog Devices (ADI) that utilizes proprietary iCoupler® magnetic isolation technology. By combining high-speed CMOS process technology with monolithic air-core transformer technology, this device delivers excellent electrical isolation performance and operational stability, while seamlessly integrating with low-speed and full-speed USB-compatible peripherals.

As an industry-leading USB digital isolation solution, the ADUM3160 effectively addresses the challenge of achieving electrical isolation in traditional USB interfaces. In fields such as industrial control, medical devices, data acquisition systems, and consumer electronics, this device has become the preferred solution for USB interface isolation design thanks to its outstanding performance, including a 2500 Vrms isolation voltage, a 12 Mbps full-speed data rate, and >25 kV/µs common-mode transient immunity.

II. Key Features

The ADUM3160 offers the following outstanding features that enable it to excel in USB isolation applications:

1. Compatibility with the USB 2.0 Standard

Fully supports the USB 2.0 protocol specification and is compatible with both low-speed (1.5 Mbps) and full-speed (12 Mbps) data rate modes.

2. High Isolation Voltage and Safety Certifications

Isolation voltage: 2500 V rms (1 minute, compliant with UL 1577)

CSA Component Acceptance Notice #5A certification

IEC 60950-1: 400 V rms (reinforced insulation)

VDE Certification: VIORM = 560 V peak

3. High Common-Mode Transient Immunity (CMTI)

Common-mode transient immunity of up to >25 kV/µs ensures signal integrity in high-noise environments, effectively preventing noise interference and data corruption.

4. Low-Power Design

Upstream supply current: 7 mA (maximum, 1.5 Mbps)

Upstream supply current: 8 mA (maximum, 12 Mbps)

Upstream idle current: 2.5 mA

Extremely low current consumption in idle mode eliminates the need for a suspend state

5. Wide Operating Voltage Range

Supports power supplies from 3.0 V to 5.5 V, is compatible with 3.3 V and 5 V systems, and can be connected directly to VBUSx.

6. Bidirectional Communication and Transparent Isolation

Supports bidirectional USB communication; edge-detection-based iCoupler technology combined with internal logic enables transparent, easily configurable port isolation.

7. Wide Operating Temperature Range

Operating temperature range: -40°C to +105°C, suitable for a variety of harsh environments.

8. Upstream Short-Circuit Protection

Built-in upstream short-circuit protection enhances system safety.

9. Enhanced ESD Protection

Enhanced system-level ESD protection compliant with the IEC 61000-4-x standard.

10. Compact Package

16-pin wide-body SOIC package (0.295 inches, 7.50 mm wide), facilitating PCB layout and automated production.

III. Detailed Specifications

Manufacturer: Analog Devices (ADI)

Part Number: ADUM3160BRWZ

Isolation Technology: iCoupler® magnetic isolation

Isolation Voltage: 2500 V rms

Data Rate: 1.5 Mbps (Low Speed) / 12 Mbps (Full Speed)

Common-Mode Transient Immunity (CMTI): >25 kV/µs

Supply Voltage: 3.0 V to 5.5 V

Upstream Supply Current (1.5 Mbps): 7 mA (Max)

Upstream Supply Current (12 Mbps): 8 mA (Max)

Upstream Idle Current: 2.5 mA

Operating Temperature Range: -40°C to +105°C

Package: 16-pin wide-body SOIC (7.50 mm wide)

USB Compatibility: USB 2.0 (Full-Speed/Low-Speed)

Safety Certifications: UL 1577, CSA, IEC 60950-1, VDE

IV. Typical Applications

Thanks to its exceptional isolation performance and USB compatibility, the ADUM3160 is widely used in the following applications:

1. Industrial Automation and Fieldbus Isolation

In industrial control systems, the ADUM3160 can be used for signal isolation between PLCs and sensors, effectively shielding against intense electrical noise and ground loop interference in factory environments to ensure the safety of core control systems.

2. Isolation Between Medical Devices and Patient Interfaces

Electrical isolation is critical in medical devices connected to the human body (such as ECG machines, blood pressure monitors, and pulse oximeters). The 2500 V isolation voltage provided by the ADUM3160 effectively protects patients and medical personnel from the risk of electric shock while ensuring the accurate transmission of medical data.

3. USB Peripheral Isolation

Provides electrical isolation protection for various USB peripherals, preventing the host from being affected by electrical faults on the peripheral side.

4. Isolated USB Hubs

In USB hub designs requiring multi-port isolation, the ADUM3160 serves as the core isolation component, achieving electrical isolation between ports.

5. Data Acquisition and Instrumentation

In laboratory instruments and data acquisition systems, the ADUM3160 eliminates ground loops, improving signal quality and measurement accuracy.

6. USB Repeaters

For long-distance USB signal transmission, the ADUM3160 can function as an isolated repeater to enhance signal integrity.

7. Automotive Electronics

The ADUM3160WBRWZ model is certified for automotive applications and is suitable for scenarios such as isolating in-vehicle USB interfaces.

V. Mingjiada’s Supply Advantages

Founded in 1996, Shenzhen Mingjiada Electronics Co., Ltd. (Mingjiada) is a globally renowned authorized independent distributor of electronic components. The company has obtained ISO 9001 Quality Management System and ISO 14001 Environmental Management System certifications and operates branches and smart warehouses in Hong Kong, Japan, Russia, and other locations.

Mingjiada consistently adheres to the business philosophy of “Genuine Products, In-Stock Supply” and is committed to providing a full range of electronic components and supply chain solutions for sectors such as 5G communications, automotive electronics, industrial automation, the Internet of Things (IoT), artificial intelligence, and consumer electronics.

For the ADUM3160 series, Mingjiada offers:

Genuine Products: 100% sourced from original manufacturers, with quality guaranteed

Immediate Availability: Rapid response to shorten procurement cycles

Full Model Coverage: The entire series, including ADUM3160BRWZ, ADUM3160BRWZ-RL, and more

If you need ADUM3160 samples, detailed information, or bulk purchases, please contact the Mingjiada Electronics sales team!

Tags: ADUM3160BRWZ, ADUM3160BRWZ, ADUM3160BR, ADUM3160B, ADUM3160