ADUM3161BRWZ - USB Digital Isolator 2.5kV | Analog Devices
料号： ADUM3161BRWZ ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $4.38 | $4.38 |
| 10 | $4.1 | $41.00 |
| 100 | $3.85 | $385.00 |
| 500 | $3.6 | $1,800.00 |
| 1,000 | $3.4 | $3,400.00 |
ADUM3161BRWZ 概述
A USB digital isolator is a component that provides electrical isolation between a USB interface and the rest of the system, preventing ground loops, noise, and voltage spikes from damaging sensitive electronics. It uses magnetic or capacitive coupling to transfer data across an isolation barrier, ensuring signal integrity while maintaining safety. In the hierarchy of isolation components, a USB isolator is a specialized type of digital isolator, which falls under the broader category of interface ICs, which are part of integrated circuits.
Key features of the ADUM3161BRWZ include a data rate of 12 Mbps (full-speed USB), 2.5 kVrms isolation voltage, and a common-mode transient immunity (CMTI) of 25 kV/µs. The device operates from a 3.0V to 5.5V supply on both sides, allowing flexible integration with various USB controllers. It also features an integrated DC-to-DC converter, eliminating the need for an external isolated power supply, which simplifies design and reduces component count.
Technically, the ADUM3161BRWZ uses Analog Devices' iCoupler technology, which combines high-speed CMOS and monolithic air core transformers to achieve reliable isolation. The device provides two isolation channels: one for upstream data (D+ and D-) and one for downstream control signals. It also includes an integrated oscillator and rectifier to generate an isolated supply, ensuring proper operation without external power components.
Typical applications include USB isolation in medical devices, industrial automation, and test equipment, where safety and noise immunity are critical. The device is also used in USB hubs and peripheral devices to prevent ground loops and protect against electrostatic discharge (ESD).
When designing with the ADUM3161BRWZ, ensure proper PCB layout with adequate spacing between the isolated and non-isolated grounds. Place decoupling capacitors close to the VDD pins on both sides to minimize noise. The device is RoHS compliant and available in tape and reel packaging.
直接替换替代料： ADUM3161BRWZ ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： ADUM3161BRWZ （相同外形与封装尺寸） ——差异在于 Data Rate, Number of Channels, Technology, CMTI, Isolation Rating.
快速对比工具——选择替代料号进行并排对比：
ADUM3160BRWZ
✅ 直接替换✓ 有现货
$2.9 / 个
查看数据手册 →ADUM3165BRWZ
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
ADUM3161BRWZ-RL
✅ 直接替换📋 参考替代料（不在目录中）
ADUM3161BRWZ-RL7
✅ 直接替换✓ 有现货
$2.88 / 个
查看数据手册 →ADUM3161BRWZ 规格参数
| Isolation Voltage | 2500 Vrms |
| 数据速率 | 12 Mbps (full-speed USB) |
| Number of Channels | 1 (bidirectional) |
| Common-Mode Transient Immunity (CMTI) | 25 kV/µs |
| Supply Voltage (VDD1) | 3.0 V to 5.5 V |
| Supply Voltage (VDD2) | 3.0 V to 5.5 V |
| Isolation Rating | 2.5 kVrms |
| 封装 | 16-SOIC (0.295", 7.50mm Width) |
| 工作温度范围 | -40°C to +105°C |
| RoHS 状态 | Compliant |
| 安装类型 | Surface Mount |
| 引脚数 | 16 |
| Technology | iCoupler |
ADUM3161BRWZ 引脚配置
| 引脚 1 | VDD1 — Primary supply voltage (3.0V to 5.5V) |
| 引脚 2 | GND1 — Primary ground |
| 引脚 3 | D+ — USB data plus |
| 引脚 4 | D- — USB data minus |
| 引脚 5 | NC — No connect |
| 引脚 6 | NC — No connect |
| 引脚 7 | GND1 — Primary ground |
| 引脚 8 | VDD1 — Primary supply voltage |
| 引脚 9 | VDD2 — Secondary supply voltage (3.0V to 5.5V) |
| 引脚 10 | GND2 — Secondary ground |
| 引脚 11 | D+ — USB data plus (isolated side) |
| 引脚 12 | D- — USB data minus (isolated side) |
| 引脚 13 | NC — No connect |
| 引脚 14 | NC — No connect |
| 引脚 15 | GND2 — Secondary ground |
| 引脚 16 | VDD2 — Secondary supply voltage |
典型应用
ADUM3161BRWZ 适用于 6 应用s: Medical Device USB Isolation, Industrial Automation USB Isolation, Test and Measurement Equipment, USB Hub Isolation, Consumer Electronics USB Isolation, Automotive USB Isolation.
Medical Device USB Isolation
The ADUM3161BRWZ provides 2.5kVrms isolation for USB connections in medical devices, ensuring patient safety by preventing leakage currents. Its integrated DC-DC converter simplifies power supply design, and its 12 Mbps data rate supports full-speed USB peripherals like diagnostic sensors and imaging equipment. The high CMTI of 25 kV/µs ensures reliable operation in electrically noisy hospital environments.
推荐
Industrial Automation USB Isolation
In industrial automation, the ADUM3161BRWZ isolates USB interfaces from high-voltage transients and ground loops, protecting PLCs and HMI panels. Its 2.5kVrms isolation and 25 kV/µs CMTI handle harsh electrical environments. The integrated DC-DC converter reduces board space, and the wide supply range (3.0V to 5.5V) allows flexible integration with various microcontrollers.
推荐
Test and Measurement Equipment
The ADUM3161BRWZ is ideal for isolating USB ports in oscilloscopes, data loggers, and signal generators. It prevents ground loops that can distort measurements and protects sensitive front-end electronics from ESD. The 12 Mbps data rate is sufficient for control and data transfer, and the integrated power supply simplifies design in compact instruments.
推荐
USB Hub Isolation
The ADUM3161BRWZ can be used in USB hubs to isolate downstream ports, preventing fault propagation and improving system reliability. Its integrated DC-DC converter eliminates the need for multiple isolated supplies, reducing cost and complexity. The device supports full-speed USB, making it suitable for most peripherals.
推荐
Consumer Electronics USB Isolation
In consumer electronics, the ADUM3161BRWZ isolates USB connections in devices like smart TVs and gaming consoles, protecting against ESD and reducing noise. Its compact SOIC package and integrated power make it suitable for space-constrained designs. The 12 Mbps data rate supports standard USB peripherals.
推荐
Automotive USB Isolation
The ADUM3161BRWZ can be used in automotive infotainment systems to isolate USB ports from the vehicle's electrical system, preventing ground loops and protecting against voltage transients. Its wide supply range and high CMTI make it suitable for automotive environments. However, it is not AEC-Q100 qualified, so for automotive-grade applications, consider the ADUM3161BRWZ-Q1 if available.
推荐
推荐产品汇总
工程参考数据： ADUM3161BRWZ ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | ADUM3160BRWZ | ADUM3165BRWZ | ISOUSB211 |
|---|---|---|---|---|
| Package | 16-SOIC (0.295", 7.50mm Width) | 16-SOIC (0.295", 7.50mm Width) - same | 16-SOIC (0.295", 7.50mm Width) - same | VQFN (different) |
| Brand | Analog Devices | Analog Devices | Analog Devices | Texas Instruments |
| Isolation Voltage | 2500 Vrms | 2500 Vrms | 2500 Vrms | 5000 Vrms |
| Data Rate | 12 Mbps | 12 Mbps | 480 Mbps | 480 Mbps |
| Integrated DC-DC Converter | Yes | No | Yes | Yes |
| CMTI | 25 kV/µs | 25 kV/µs | 25 kV/µs | 100 kV/µs |
| Supply Voltage Range | 3.0V to 5.5V | 3.0V to 5.5V | 3.0V to 5.5V | 3.0V to 5.5V |
| Operating Temperature Range | -40°C to +105°C | -40°C to +105°C | -40°C to +105°C | -40°C to +125°C |
关键差异点
- Integrated DC-DC converter （对比 ADUM3160BRWZ)
- Full-speed USB support （对比 ADUM3165BRWZ)
- Same package as ADUM3160BRWZ （对比 ISOUSB211)
设计说明
Ensure proper PCB layout with adequate spacing between the isolated and non-isolated grounds. Place decoupling capacitors (0.1 µF and 10 µF) close to the VDD1 and VDD2 pins to minimize noise. Use a solid ground plane on each side of the isolation barrier.
The integrated DC-DC converter requires careful consideration of the input supply. Ensure the input voltage is within the specified range (3.0V to 5.5V) and can provide sufficient current for the isolated side. Add a ferrite bead in series with the input supply to reduce high-frequency noise.
Do not exceed the absolute maximum ratings for isolation voltage or supply voltage. Ensure that the USB data lines are properly terminated and that the device is not subjected to voltages beyond its ratings. Also, verify that the external components (if any) are compatible with the integrated DC-DC converter.
合规信息
RoHS compliant per Analog Devices product page. Not AEC-Q100 qualified.