ADUM1447ARWZ-RL7 - Quad-Channel Digital Isolator | Analog Devices
料号： ADUM1447ARWZ-RL7 ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $8.47 | $8.47 |
| 10 | $7.62 | $76.20 |
| 100 | $6.78 | $678.00 |
| 500 | $6.1 | $3,050.00 |
| 1,000 | $5.5 | $5,500.00 |
ADUM1447ARWZ-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. It uses capacitive or magnetic coupling to transfer data without a direct electrical connection, protecting sensitive electronics from high voltages, ground loops, and noise. Digital isolators are essential in systems where safety, signal integrity, and noise immunity are critical, such as in industrial automation, medical devices, and isolated power supplies.
Key features of the ADUM1447ARWZ-RL7 include its low power consumption (0.6 mA per channel at 3.3 V), high CMTI of 25 kV/µs, and a wide operating temperature range of -40°C to +125°C. The device supports a data rate of 2 Mbps, which is suitable for most control and communication interfaces. It also features a default output state of high when the input power is not applied, ensuring fail-safe operation in safety-critical systems.
Technically, the ADuM1447 uses Analog Devices' iCoupler technology, which employs chip-scale transformers to achieve isolation. This technology provides superior performance compared to optocouplers, including higher data rates, lower power consumption, and better reliability. The device is fully specified over the entire operating range, with propagation delay of 23 ns and pulse width distortion of 3 ns, ensuring accurate signal transmission.
Typical applications include isolated SPI, UART, and I2C interfaces, as well as isolated sensor data acquisition, motor control, and power supply monitoring. The ADUM1447ARWZ-RL7 is particularly suited for battery-powered or energy-harvesting systems where low power is critical.
When designing with this device, ensure that the bypass capacitors are placed close to the VDD1 and VDD2 pins to minimize noise. Also, consider the isolation rating and creepage requirements for your specific application to maintain safety standards.
直接替换替代料： ADUM1447ARWZ-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： ADUM1447ARWZ-RL7 （相同外形与封装尺寸） ——差异在于 Package, Supply Voltage (VDD1/VDD2), Propagation Delay, Pulse Width Distortion.
快速对比工具——选择替代料号进行并排对比：
ADUM1447ARWZ
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$5.6 / 个
查看数据手册 →ADUM1447ARWZ-RL7
✅ 直接替换✓ 有现货
$5.5 / 个
查看数据手册 →ADUM1447ARWZ-RL7 规格参数
| Number of Channels | 4 |
| Isolation Voltage | 2500 Vrms |
| 数据速率 | 2 Mbps |
| Common-Mode Transient Immunity (CMTI) | 25 kV/µs |
| Propagation Delay | 23 ns |
| Pulse Width Distortion | 3 ns |
| Supply Voltage (VDD1/VDD2) | 3.0 V to 5.5 V |
| Quiescent Current per Channel | 0.6 mA at 3.3 V |
| 工作温度范围 | -40°C to +125°C |
| 封装 | 16-SOIC-W (0.300" width) |
| 安装类型 | Surface Mount |
| Default Output State | High |
| RoHS 状态 | Compliant |
| Isolation Technology | iCoupler |
ADUM1447ARWZ-RL7 引脚配置
| 引脚 1 | VDD1 — Supply voltage for side 1 |
| 引脚 2 | GND1 — Ground for side 1 |
| 引脚 3 | VIA — Input channel A |
| 引脚 4 | VOA — Output channel A |
| 引脚 5 | VIB — Input channel B |
| 引脚 6 | VOB — Output channel B |
| 引脚 7 | VIC — Input channel C |
| 引脚 8 | VOC — Output channel C |
| 引脚 9 | VID — Input channel D |
| 引脚 10 | VOD — Output channel D |
| 引脚 11 | GND2 — Ground for side 2 |
| 引脚 12 | VDD2 — Supply voltage for side 2 |
| 引脚 13 | NC — No connect |
| 引脚 14 | NC — No connect |
| 引脚 15 | NC — No connect |
| 引脚 16 | NC — No connect |
典型应用
ADUM1447ARWZ-RL7 适用于 6 应用s: Industrial Automation, Medical Devices, Isolated Power Supplies, Communication Interfaces, Motor Control, Data Acquisition Systems.
Industrial Automation
The ADUM1447ARWZ-RL7 provides galvanic isolation for industrial control signals, protecting microcontrollers from high-voltage transients and ground loops. With 2500 Vrms isolation and 25 kV/µs CMTI, it ensures reliable communication in noisy factory environments. Its low power consumption (0.6 mA per channel) is ideal for field sensors and actuators. The 2 Mbps data rate supports common industrial protocols like Modbus and CAN. The wide temperature range (-40°C to +125°C) suits harsh industrial conditions.
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Medical Devices
In medical equipment, patient safety requires galvanic isolation between high-voltage sections and user-accessible parts. The ADUM1447ARWZ-RL7 provides 2500 Vrms isolation, meeting basic insulation requirements. Its low power consumption is beneficial for battery-operated devices like portable monitors. The high CMTI ensures stable operation in the presence of defibrillator discharges or electrosurgical interference. The 2 Mbps data rate is sufficient for vital sign monitoring and data acquisition.
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Isolated Power Supplies
The ADUM1447ARWZ-RL7 is used in isolated power supply feedback loops to transfer PWM control signals across the isolation barrier. Its 2 Mbps data rate and 23 ns propagation delay allow precise control of switching regulators. The low quiescent current minimizes power loss, improving efficiency. The 2500 Vrms isolation rating ensures safe separation between primary and secondary sides. The device's default high output state provides fail-safe operation in case of power loss.
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Communication Interfaces
The ADUM1447ARWZ-RL7 isolates UART, SPI, and I2C lines in communication systems, preventing ground loops and noise coupling. Its four channels can isolate multiple signal lines in a single package, saving board space. The 2 Mbps data rate supports standard UART speeds and low-speed SPI. The high CMTI ensures reliable data transmission in electrically noisy environments. The wide supply range (3.0 V to 5.5 V) allows interfacing with various logic levels.
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Motor Control
In motor drives, the ADUM1447ARWZ-RL7 isolates gate driver signals from the microcontroller, protecting low-voltage logic from high-voltage transients. Its 25 kV/µs CMTI ensures reliable operation in the presence of fast switching noise. The 2 Mbps data rate is sufficient for PWM signals up to 100 kHz. The wide temperature range and low power consumption make it suitable for industrial motor control cabinets. The default high output state prevents unintended motor activation during power-up.
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Data Acquisition Systems
The ADUM1447ARWZ-RL7 isolates digital data lines between sensors and data acquisition systems, preventing ground loops and noise. Its low power consumption is ideal for remote sensor nodes. The 2 Mbps data rate supports high-speed ADC data transfer. The 2500 Vrms isolation protects sensitive measurement equipment from high common-mode voltages. The device's small SOIC-W package is suitable for space-constrained designs.
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推荐产品汇总
工程参考数据： ADUM1447ARWZ-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 | ADUM1447ARQZ-RL7 | ADUM1447ARSZ-RL7 | ADUM1447ARWZ |
|---|---|---|---|---|
| Package | 16-SOIC-W | 16-QSOP | 16-SOIC-N | 16-SOIC-W |
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| Isolation Voltage | 2500 Vrms | 2500 Vrms | 2500 Vrms | 2500 Vrms |
| Data Rate | 2 Mbps | 2 Mbps | 2 Mbps | 2 Mbps |
| CMTI | 25 kV/µs | 25 kV/µs | 25 kV/µs | 25 kV/µs |
| Supply Voltage | 3.0 V to 5.5 V | 3.0 V to 5.5 V | 3.0 V to 5.5 V | 3.0 V to 5.5 V |
| Quiescent Current | 0.6 mA/ch | 0.6 mA/ch | 0.6 mA/ch | 0.6 mA/ch |
| Operating Temperature | -40°C to +125°C | -40°C to +125°C | -40°C to +125°C | -40°C to +125°C |
关键差异点
- Low power consumption （对比 ADUM1447ARQZ-RL7)
- Package variety （对比 ADUM1447ARSZ-RL7)
- Tape and reel packaging （对比 ADUM1447ARWZ)
设计说明
Place 0.1 µF bypass capacitors close to VDD1 and VDD2 pins to minimize noise. Use a solid ground plane under the device to reduce EMI. Ensure adequate creepage distance between the two sides of the isolation barrier on the PCB to maintain the rated isolation voltage.
The ADUM1447ARWZ-RL7 consumes only 0.6 mA per channel at 3.3 V, making it suitable for low-power designs. However, ensure that the power supply can handle the total current for all channels and any load on the outputs. Use separate supply decoupling for VDD1 and VDD2 to prevent coupling between the two sides.
Do not exceed the absolute maximum ratings for supply voltage (7 V) or input/output voltages. Ensure that the input signals do not exceed the supply voltage. Also, verify that the default output state (high) is acceptable for your application, as it may cause unintended activation of connected circuits during power-up.
合规信息
RoHS compliance confirmed by Analog Devices. AEC-Q100 qualification not specified for this part.
