ADUM2250ARWZ-RL7 - 5kV I2C Digital Isolator | Analog Devices
料号： ADUM2250ARWZ-RL7 ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $4.5 | $4.50 |
| 10 | $4.05 | $40.50 |
| 100 | $3.6 | $360.00 |
| 500 | $3.24 | $1,620.00 |
| 1,000 | $2.88 | $2,880.00 |
ADUM2250ARWZ-RL7 概述
A digital isolator is a component that provides galvanic isolation between two circuits while allowing digital signals to pass across the isolation barrier. Unlike optocouplers, which use light to transfer signals, iCoupler technology uses microscopic transformers to couple signals magnetically, offering advantages in speed, power consumption, and reliability. Digital isolators are essential in systems where ground potential differences, noise, or safety requirements demand isolation, such as in motor drives, power supplies, and communication interfaces. The ADuM2250 specifically addresses I2C isolation, a common challenge in multi-board systems where I2C buses need to cross isolation boundaries.
Key features of the ADUM2250ARWZ-RL7 include its 5 kVrms isolation rating, which meets reinforced insulation requirements for many safety standards, and its 25 kV/µs CMTI, ensuring reliable operation in noisy industrial environments. The device supports hot-swap capability, allowing boards to be inserted or removed without disrupting the bus, and its open-drain outputs are compatible with standard I2C protocols. The 30 mA current sink capability enables driving multiple I2C devices on the isolated side, while the wide supply range accommodates various logic levels.
Technically, the ADuM2250 uses a proprietary iCoupler architecture that combines high-speed CMOS and monolithic transformer technology. This results in low propagation delay and high data integrity, with a typical propagation delay of 100 ns and pulse width distortion of less than 10 ns. The device also features a refresh mechanism to maintain output states during static inputs, ensuring no data corruption. The 16-lead SOIC-W package provides a compact footprint with a 7.50 mm body width, suitable for space-constrained designs.
Typical applications include isolating I2C buses in industrial control systems, medical equipment, and smart grid infrastructure. The ADuM2250 is also used in power management systems where isolation is required between control and power stages. Its hot-swap capability makes it ideal for redundant systems and hot-pluggable modules.
When designing with this device, ensure proper PCB layout with adequate creepage and clearance distances for the 5 kV isolation rating. Place decoupling capacitors close to the VDD pins and follow the manufacturer's guidelines for isolation barrier spacing.
直接替换替代料： ADUM2250ARWZ-RL7 ——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： ADUM2250ARWZ-RL7 （相同外形与封装尺寸） ——差异在于 Operating Temperature Range, Supply Voltage Range.
快速对比工具——选择替代料号进行并排对比：
ADUM2250ARWZ
✅ 直接替换✓ 有现货
$2.8 / 个
查看数据手册 →ADUM2250ARWZ-RL
✅ 直接替换📋 参考替代料（不在目录中）
ADUM2251ARWZ
✅ 直接替换✓ 有现货
$3.1 / 个
查看数据手册 →ADUM2250WARWZ
✅ 直接替换📋 参考替代料（不在目录中）
ADUM2250ARWZ-RL7 规格参数
| Isolation Voltage | 5000 Vrms |
| Number of Channels | 2 (bidirectional) |
| 数据速率 | 1 Mbps |
| Common-Mode Transient Immunity (CMTI) | 25 kV/µs |
| Supply Voltage Range | 3.0 V to 5.5 V |
| Current Sink Capability | 30 mA |
| 接口类型 | I2C |
| 封装 | 16-SOIC (0.295", 7.50mm Width) |
| 工作温度范围 | -40°C to +125°C |
| Propagation Delay | 100 ns (typical) |
| Pulse Width Distortion | 10 ns (typical) |
| Hot-Swap Capable | Yes |
| Open-Drain Output | Yes |
| RoHS Compliant | Yes |
| Technology | iCoupler |
ADUM2250ARWZ-RL7 引脚配置
| 引脚 1 | VDD1 — Supply voltage, side 1 |
| 引脚 2 | GND1 — Ground, side 1 |
| 引脚 3 | SDA1 — I2C data, side 1 |
| 引脚 4 | SCL1 — I2C clock, side 1 |
| 引脚 5 | GND1 — Ground, side 1 |
| 引脚 6 | NC — No connect |
| 引脚 7 | NC — No connect |
| 引脚 8 | NC — No connect |
| 引脚 9 | NC — No connect |
| 引脚 10 | NC — No connect |
| 引脚 11 | GND2 — Ground, side 2 |
| 引脚 12 | SCL2 — I2C clock, side 2 |
| 引脚 13 | SDA2 — I2C data, side 2 |
| 引脚 14 | GND2 — Ground, side 2 |
| 引脚 15 | VDD2 — Supply voltage, side 2 |
| 引脚 16 | NC — No connect |
典型应用
ADUM2250ARWZ-RL7 适用于 6 应用s: Industrial Automation, Medical Equipment, Smart Grid Infrastructure, Automotive Electronics, Power Management Systems, Telecommunications.
Industrial Automation
The ADUM2250ARWZ-RL7 isolates I2C buses in industrial control systems, protecting against ground loops and high-voltage transients. Its 5 kV isolation and 25 kV/µs CMTI ensure reliable communication in noisy factory environments. The hot-swap capability allows for live insertion of modules, reducing downtime. With a 1 Mbps data rate, it supports fast I2C communication between PLCs, sensors, and actuators. The wide supply range (3.0V-5.5V) interfaces with various logic levels, and the 30 mA sink capability drives multiple devices on the isolated side.
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Medical Equipment
In medical devices, patient safety requires galvanic isolation between low-voltage control circuits and high-voltage sections. The ADUM2250ARWZ-RL7 provides 5 kV isolation, meeting safety standards for patient-connected equipment. Its low propagation delay and high CMTI ensure accurate data transfer in monitoring systems. The hot-swap feature is useful for modular medical devices that require field-replaceable units. The device's small SOIC-16 package fits compact designs, and its low power consumption is suitable for battery-powered portable monitors.
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Smart Grid Infrastructure
Smart grid systems require isolation between communication interfaces and high-voltage power lines. The ADUM2250ARWZ-RL7 isolates I2C buses in smart meters and grid monitoring equipment, providing 5 kV isolation to protect low-voltage electronics from surges. Its 25 kV/µs CMTI ensures reliable operation in high-EMI environments. The device supports hot-swap, allowing for meter replacement without service interruption. With a wide temperature range (-40°C to +125°C), it operates reliably in outdoor installations.
推荐
Automotive Electronics
In automotive systems, isolation is needed between the CAN bus and I2C sensors. The ADUM2250ARWZ-RL7 provides 5 kV isolation, protecting sensitive electronics from high-voltage transients in electric vehicles. Its high CMTI (25 kV/µs) ensures reliable data transfer in the presence of motor noise. The device operates over the automotive temperature range (-40°C to +125°C) and is available in an automotive-grade version (ADUM2250WARWZ). The hot-swap feature is useful for battery management systems that require module replacement.
推荐
Power Management Systems
Power management systems often require isolation between control and power stages. The ADUM2250ARWZ-RL7 isolates I2C buses in power supplies, battery chargers, and solar inverters. Its 5 kV isolation prevents ground loops and protects control circuits from high-voltage transients. The device's low propagation delay (100 ns) ensures fast response in feedback loops. The hot-swap capability is beneficial for redundant power supplies. With a 30 mA sink capability, it can drive multiple I2C devices on the isolated side.
推荐
Telecommunications
In telecom equipment, isolation is required between line cards and backplane I2C buses. The ADUM2250ARWZ-RL7 provides 5 kV isolation, protecting against lightning surges and ground potential differences. Its 1 Mbps data rate supports fast I2C communication for configuration and monitoring. The hot-swap feature allows for line card replacement without shutting down the system. The device's small package and low power consumption are ideal for high-density telecom boards.
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推荐产品汇总
工程参考数据： ADUM2250ARWZ-RL7 ——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 | ADUM2250ARWZ | ADUM2250ARWZ-RL | ADUM2251ARWZ | ADUM2250WARWZ | ISO1540DR |
|---|---|---|---|---|---|---|
| Package | 16-SOIC (7.50mm) | 16-SOIC (7.50mm) | 16-SOIC (7.50mm) | 16-SOIC (7.50mm) | 16-SOIC (7.50mm) | SOIC-8 |
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Texas Instruments |
| Isolation Voltage | 5000 Vrms | 5000 Vrms | 5000 Vrms | 5000 Vrms | 5000 Vrms | 2500 Vrms |
| Data Rate | 1 Mbps | 1 Mbps | 1 Mbps | 1 Mbps | 1 Mbps | 1 Mbps |
| CMTI | 25 kV/µs | 25 kV/µs | 25 kV/µs | 25 kV/µs | 25 kV/µs | 25 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 | 3.0V to 5.5V | 3.0V to 5.5V |
| Number of Channels | 2 bidirectional | 2 bidirectional | 2 bidirectional | 1 bidirectional, 1 unidirectional | 2 bidirectional | 2 bidirectional |
| Hot-Swap Capable | Yes | Yes | Yes | Yes | Yes | Yes |
关键差异点
- 5 kV isolation rating （对比 ISO1540DR)
- Hot-swap capability （对比 ISO1540DR)
- 30 mA current sink capability （对比 ISO1540DR)
设计说明
For 5 kV isolation, ensure PCB creepage and clearance distances meet safety standards. The SOIC-16 package has a minimum creepage of 8 mm, but you must maintain at least 8 mm spacing between the high-voltage and low-voltage sides on the PCB. Use a slot or cutout under the isolator to increase creepage distance if needed.
Decouple both VDD1 and VDD2 with 0.1 µF ceramic capacitors placed as close to the pins as possible. Additionally, use a 10 µF bulk capacitor on each side if the supply is shared with other components. The ADuM2250 draws quiescent current of approximately 5 mA per side, so ensure the supply can handle the load.
Keep the I2C traces short and avoid routing them near high-voltage or high-current traces to minimize noise coupling. Use ground planes on both sides of the isolation barrier, but do not connect them together. The iCoupler technology is sensitive to magnetic fields, so avoid placing the device near transformers or inductors.
合规信息
RoHS compliant per Analog Devices product page. AEC-Q100 not applicable for standard version; automotive version ADUM2250WARWZ is AEC-Q100 qualified.