ADUM3160BRWZ-RL: An Innovative Solution for USB Port Isolation‌

In today's world of ubiquitous USB interfaces, isolation technology is crucial for ensuring system safety and reliability. The ADUM3160BRWZ-RL from Analog Devices Inc. is a USB port isolator based on iCoupler® technology, specifically designed for low-speed and full-speed USB devices, offering excellent isolation performance and easy integration.
Product Overview‌
The ADUM3160BRWZ-RL combines high-speed CMOS process with monolithic air-core transformer technology to achieve isolated transmission of USB signals. The device supports the USB 2.0 standard, compatible with low-speed (1.5 Mbps) and full-speed (12 Mbps) data rates, making it suitable for harsh environments such as automotive and industrial control applications.
Key Characteristics‌
Isolation Voltage‌: 2500 Vrms, ensuring high safety
Operating Temperature Range‌: -40°C to 105°C, adaptable to extreme environments
Package Form‌: 16-pin SOIC, convenient for PCB layout
Power Supply Voltage Range‌: 4.5 V to 5.5 V, compatible with USB standards
Low Power Design‌: Idle current only 2.5 mA, optimizing energy efficiency
Technical Advantages‌
Intelligent Data Flow Direction Detection‌: The ADUM3160BRWZ-RL automatically detects data packet direction through internal logic, eliminating the need for external intervention. This edge-detection-based iCoupler technology enables transparent isolation, simplifying system design.
Integrated Solution‌: The device integrates signal isolation, power management, and ESD protection functions, reducing the number of external components. Typical applications require only a few resistors and capacitors for configuration.
Robust Operational Performance‌: With high common-mode transient immunity (>25 kV/μs) and short-circuit protection capability, the device ensures stable operation in electrically noisy environments.

Application Scenarios‌

Application Field	Typical Application Scenarios
Industrial Control	PLC interface isolation
Medical Equipment	Patient monitoring systems
Automotive Electronics	In-vehicle infotainment systems
Communication Equipment	Base station interface protection

Frequently Asked Questions‌
Q1: What is the difference between the ADUM3160BRWZ-RL and a regular USB hub?‌
A1: This device provides electrical isolation, protecting the host system from interface end failures, while a regular hub lacks this function.
Q2: How is USB signal isolation transmission achieved?‌
A2: Through iCoupler® technology, using air-core transformers to couple signals while maintaining electrical isolation.
Q3: Does this device support USB high-speed mode?‌
A3: No, it is designed specifically for low-speed and full-speed USB, with a maximum of 12 Mbps.
Q4: How is isolation performance verified?‌
A4: Through UL certification (UL 1577), with a 1-minute withstand voltage test reaching 2500 Vrms.
Design Considerations‌
Ensure the power supply voltage is within the 4.5-5.5 V range.
Reasonably layout the PCB to reduce EMI effects.
Pay attention to the SOIC package's thermal design.
Follow the USB specification's pull-up resistor configuration.
Conclusion‌
The ADUM3160BRWZ-RL provides an innovative solution for USB interface isolation. Its integrated design, intelligent data flow direction detection, and robust operational performance make it an ideal choice for fields such as industrial, automotive, and medical applications. By simplifying system design and enhancing safety and reliability, this device offers engineers a powerful tool to address stringent interface challenges.
Need a ‌pinout diagram‌ or ‌sample circuit layout‌ for the ADUM3160BRWZ-RL? I can provide quick visuals to help with your PCB design.
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