ADUM1311ARWZ - 3-Ch Digital Isolator 1Mbps | Analog Devices
料号： ADUM1311ARWZ ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $3.5 | $3.50 |
| 10 | $3.15 | $31.50 |
| 100 | $2.8 | $280.00 |
| 500 | $2.5 | $1,250.00 |
| 1,000 | $2.25 | $2,250.00 |
ADUM1311ARWZ 概述
Digital isolators are components that transmit digital signals across an isolation barrier, preventing DC current flow while allowing AC signal transfer. They are essential in systems requiring galvanic isolation for safety, noise immunity, or ground potential differences. The ADUM1311ARWZ uses iCoupler technology, which employs micro-transformers to couple signals, offering advantages over optocouplers such as higher speed, lower power, and better reliability.
Key features include low power operation: 1.7 mA per channel max at 0-2 Mbps and 4.0 mA per channel max at 2-10 Mbps for 5V operation; for 3V operation, 1.0 mA per channel max at 0-2 Mbps. The device has a patented refresh feature that ensures DC correctness in the absence of input transitions and during power-up/power-down. It also allows the user to predetermine the default output state in the absence of input VDD1 power via a control pin.
The ADUM1311ARWZ is designed for general-purpose isolation in industrial, medical, and communication systems. Its high CMTI and low power make it suitable for isolating SPI, UART, and other serial interfaces. The 16-pin SOIC-W package is widely used and easy to integrate.
Typical applications include isolated data acquisition, motor control, power inverters, and isolated sensor interfaces. The device's robust isolation barrier protects sensitive electronics from high-voltage transients and ground loops.
When designing with this device, ensure proper decoupling on both power supplies (VDD1 and VDD2) and consider the propagation delay for timing-sensitive applications. The default output state control pin should be set according to system safety requirements.
直接替换替代料： ADUM1311ARWZ ——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： ADUM1311ARWZ （相同外形与封装尺寸） ——差异在于 Technology, Number of Channels, Data Rate, Package, Isolation Voltage.
快速对比工具——选择替代料号进行并排对比：
ADUM1311ARWZ-RL
✅ 直接替换📋 参考替代料（不在目录中）
ADUM1310ARWZ
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$2.2 / 个
查看数据手册 →ADUM1301ARWZ
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$3.03 / 个
查看数据手册 →ADUM1300ARWZ
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$1.75 / 个
查看数据手册 →ISO7721DW
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$1.45 / 个
查看数据手册 →Si8621BB-B-IS
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
ADUM1311ARWZ 规格参数
| Number of Channels | 3 |
| Isolation Voltage | 3750 Vrms |
| 数据速率 | 1 Mbps |
| Common-Mode Transient Immunity (CMTI) | 25 kV/µs |
| Supply Voltage (VDD1/VDD2) | 3V to 5.5V |
| Supply Current per Channel (5V, 0-2 Mbps) | 1.7 mA max |
| Supply Current per Channel (5V, 2-10 Mbps) | 4.0 mA max |
| Supply Current per Channel (3V, 0-2 Mbps) | 1.0 mA max |
| 工作温度范围 | -40°C to +125°C |
| 封装 | 16-SOIC (0.295", 7.50mm Width) |
| 安装类型 | Surface Mount |
| Technology | iCoupler |
| Default Output State | Configurable via control pin |
| RoHS 状态 | Compliant |
ADUM1311ARWZ 引脚配置
| 引脚 1 | VDD1 — Input supply voltage |
| 引脚 2 | GND1 — Input ground |
| 引脚 3 | VIA — Input channel A |
| 引脚 4 | VIB — Input channel B |
| 引脚 5 | VIC — Input channel C |
| 引脚 6 | GND1 — Input ground |
| 引脚 7 | NC — No connect |
| 引脚 8 | NC — No connect |
| 引脚 9 | VOD — Output channel D |
| 引脚 10 | VOE — Output channel E |
| 引脚 11 | VOF — Output channel F |
| 引脚 12 | GND2 — Output ground |
| 引脚 13 | NC — No connect |
| 引脚 14 | NC — No connect |
| 引脚 15 | VDD2 — Output supply voltage |
| 引脚 16 | GND2 — Output ground |
典型应用
ADUM1311ARWZ 适用于 6 应用s: Isolated Data Acquisition, Motor Control, Power Inverters, Isolated Sensor Interfaces, Isolated Communication Interfaces, Medical Equipment.
Isolated Data Acquisition
The ADUM1311ARWZ provides galvanic isolation for data acquisition systems, protecting sensitive ADCs and microcontrollers from high-voltage transients. Its 3750 Vrms isolation and 25 kV/µs CMTI ensure reliable data transfer in industrial environments. The low power consumption (1.7 mA per channel at 5V) makes it suitable for portable instruments. It can isolate SPI or UART interfaces between sensors and controllers, preventing ground loops and noise interference.
推荐
Motor Control
In motor control systems, the ADUM1311ARWZ isolates the low-voltage control circuitry from the high-voltage power stage. Its high CMTI (25 kV/µs) ensures reliable operation in the presence of fast switching transients. The 1 Mbps data rate is sufficient for PWM control signals. The device's low propagation delay and configurable default output state enhance system safety. It can be used to isolate gate driver signals or feedback from current sensors.
推荐
Power Inverters
The ADUM1311ARWZ is ideal for power inverter applications where galvanic isolation is required between the control and power stages. Its 3750 Vrms isolation rating provides robust protection against high-voltage transients. The high CMTI ensures signal integrity in noisy environments. The device's low power consumption reduces thermal load in compact designs. It can isolate communication lines between the inverter controller and monitoring systems.
推荐
Isolated Sensor Interfaces
The ADUM1311ARWZ provides isolation for sensor interfaces, protecting sensitive electronics from ground potential differences and noise. Its low power consumption (1.0 mA per channel at 3V) is ideal for battery-powered sensors. The 1 Mbps data rate supports most sensor protocols. The device's small SOIC package saves board space. It can isolate temperature, pressure, or current sensors in industrial monitoring systems.
推荐
Isolated Communication Interfaces
The ADUM1311ARWZ is used to isolate communication interfaces like UART, SPI, and I2C in systems where ground isolation is critical. Its 3750 Vrms isolation and 25 kV/µs CMTI ensure reliable data transfer in industrial networks. The device's low power consumption makes it suitable for field instruments. It can be used in isolated RS-485 or CAN transceivers to prevent ground loops.
推荐
Medical Equipment
In medical equipment, the ADUM1311ARWZ provides patient isolation, protecting users from electric shock. Its 3750 Vrms isolation rating meets safety standards for medical devices. The low power consumption and small package are ideal for portable monitors. The device's high reliability ensures continuous operation in critical applications. It can isolate ECG, EEG, or patient monitoring signals.
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推荐产品汇总
工程参考数据： ADUM1311ARWZ ——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 | ADUM1311ARWZ-RL | ADUM1310ARWZ | ISO7721DW |
|---|---|---|---|---|
| Package | 16-SOIC (0.295", 7.50mm Width) | 16-SOIC (0.295", 7.50mm Width) | 16-SOIC (0.295", 7.50mm Width) | 16-SOIC (0.295", 7.50mm Width) |
| Brand | Analog Devices | Analog Devices | Analog Devices | Texas Instruments |
| Number of Channels | 3 | 3 | 3 | 2 |
| Isolation Voltage | 3750 Vrms | 3750 Vrms | 3750 Vrms | 3000 Vrms |
| Data Rate | 1 Mbps | 1 Mbps | 1 Mbps | 100 Mbps |
| CMTI | 25 kV/µs | 25 kV/µs | 25 kV/µs | 100 kV/µs |
| Supply Voltage | 3V to 5.5V | 3V to 5.5V | 3V to 5.5V | 2.25V to 5.5V |
| Default Output State | Configurable | Configurable | Configurable | Fixed |
关键差异点
- Configurable default output state （对比 ISO7721DW)
- Higher isolation voltage （对比 ISO7721DW)
- Lower power consumption at 3V （对比 Si8621BB-B-IS)
设计说明
Ensure both VDD1 and VDD2 are properly decoupled with 0.1µF capacitors placed close to the pins. The device draws up to 4.0 mA per channel at 5V, so the supply must be able to handle the total current. For 3V operation, the current is lower, but still ensure adequate decoupling to prevent noise.
Maintain proper creepage and clearance distances on the PCB to meet the isolation rating. The SOIC-W package has a minimum creepage of 8mm, but verify the layout meets safety standards. Keep the isolation barrier clear of copper traces to avoid reducing the isolation voltage.
Do not exceed the absolute maximum ratings for supply voltage or input/output currents. The default output state control pin must be set correctly to ensure safe operation during power-up. Also, consider the propagation delay when designing timing-critical circuits, as it can affect system performance.
合规信息
RoHS compliant per product documentation. Other compliance data not specified in provided sources.