ADUM1301ARWZ-RL7 - 3-Ch 2.5kV Digital Isolator | Analog Devices
料号： ADUM1301ARWZ-RL7 ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $3.25 | $3.25 |
| 10 | $2.95 | $29.50 |
| 100 | $2.75 | $275.00 |
| 500 | $2.55 | $1,275.00 |
| 1,000 | $2.35 | $2,350.00 |
ADUM1301ARWZ-RL7 概述
A digital isolator is a component that transfers digital signals across an isolation barrier without a direct electrical connection, using capacitive, inductive, or optical coupling. It provides galvanic isolation to protect sensitive circuitry from high voltages, ground loops, and noise, while maintaining signal integrity. Digital isolators are essential in industrial automation, medical devices, and communication systems where safety and noise immunity are critical. They replace optocouplers in many applications, offering higher speed, better reliability, and lower power consumption.
Key features of the ADUM1301ARWZ-RL7 include its 2.5 kVrms isolation voltage, 1 Mbps data rate, and 25 kV/µs CMTI, which ensures reliable operation in noisy environments. The device supports a wide supply range of 2.7 V to 5.5 V, making it compatible with both 3.3 V and 5 V logic systems. It also features a default output state that is high when the input is unpowered, ensuring fail-safe operation. The iCoupler technology uses monolithic transformers, eliminating the LED and photodiode aging issues found in optocouplers.
Technically, the ADUM1301ARWZ-RL7 integrates high-speed CMOS and transformer isolation in a single package, providing superior performance compared to optocouplers. The device has a propagation delay of approximately 100 ns and a pulse width distortion of less than 10 ns, ensuring accurate signal transmission. It also offers a wide operating temperature range of -40°C to +105°C, suitable for industrial environments. The isolation barrier is rated for 2.5 kVrms per UL 1577, and the device is RoHS compliant.
Typical applications include industrial fieldbus communication, isolated SPI/UART interfaces, motor control, and power supply isolation. The ADUM1301ARWZ-RL7 is ideal for systems requiring reliable signal isolation with minimal power consumption. Its high CMTI makes it suitable for applications with fast-switching power stages, such as motor drives and inverters.
When designing with this device, ensure proper PCB layout to maintain isolation spacing and minimize parasitic capacitance. Place decoupling capacitors close to the VDD pins on both sides, and follow the manufacturer's guidelines for creepage and clearance distances to meet safety standards.
直接替换替代料： ADUM1301ARWZ-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： ADUM1301ARWZ-RL7 （相同外形与封装尺寸） ——差异在于 Package, Technology, Number of Channels, Common-Mode Transient Immunity (CMTI), Isolation Voltage.
快速对比工具——选择替代料号进行并排对比：
ADUM1301ARWZ
✅ 直接替换✓ 有现货
$3.03 / 个
查看数据手册 →ADUM1301BRWZ
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
ADUM1301CRWZ
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
ADUM1300ARWZ
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$1.75 / 个
查看数据手册 →ISO7731DW
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
Si8631BB-B-IS1
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
ADUM1301ARWZ-RL7 规格参数
| Number of Channels | 3 |
| Isolation Voltage | 2500 Vrms |
| 数据速率 | 1 Mbps |
| Common-Mode Transient Immunity (CMTI) | 25 kV/µs |
| Supply Voltage (VDD1/VDD2) | 2.7 V to 5.5 V |
| Propagation Delay | 100 ns (typical) |
| Pulse Width Distortion | 10 ns (typical) |
| 工作温度范围 | -40°C to +105°C |
| 封装 | 16-SOIC (0.295", 7.50 mm Width) |
| 安装类型 | Surface Mount |
| Technology | iCoupler |
| Default Output State | High |
| RoHS 状态 | Compliant |
| UL Certification | UL 1577 |
ADUM1301ARWZ-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 (side 1) |
| 引脚 4 | VIB — Input channel B (side 1) |
| 引脚 5 | VIC — Input channel C (side 1) |
| 引脚 6 | GND1 — Ground for side 1 |
| 引脚 7 | NC — No connect |
| 引脚 8 | NC — No connect |
| 引脚 9 | NC — No connect |
| 引脚 10 | GND2 — Ground for side 2 |
| 引脚 11 | VOA — Output channel A (side 2) |
| 引脚 12 | VOB — Output channel B (side 2) |
| 引脚 13 | VOC — Output channel C (side 2) |
| 引脚 14 | GND2 — Ground for side 2 |
| 引脚 15 | VDD2 — Supply voltage for side 2 |
| 引脚 16 | NC — No connect |
典型应用
ADUM1301ARWZ-RL7 适用于 6 应用s: Industrial Fieldbus Communication, Isolated SPI/UART Interface, Motor Control and Inverter Drives, Power Supply Isolation, Medical Device Isolation, Communication Systems.
Industrial Fieldbus Communication
The ADUM1301ARWZ-RL7 provides galvanic isolation for fieldbus interfaces like RS-485 and CAN, protecting controllers from ground loops and high-voltage transients. Its 1 Mbps data rate is sufficient for most industrial protocols, and the 25 kV/µs CMTI ensures reliable operation in electrically noisy factory environments. The wide supply range (2.7V to 5.5V) allows direct interface with 3.3V or 5V logic, simplifying design. When placed between the transceiver and the controller, it isolates the communication lines while maintaining signal integrity, reducing the risk of damage from voltage spikes.
推荐
Isolated SPI/UART Interface
The ADUM1301ARWZ-RL7 is ideal for isolating SPI or UART signals between microcontrollers and peripherals, such as ADCs, DACs, or sensors. Its three channels can carry SCLK, MOSI, and MISO, while the 1 Mbps data rate supports standard SPI speeds. The low propagation delay (100 ns) ensures minimal timing skew, and the high CMTI prevents data corruption in noisy environments. By isolating the digital interface, it protects sensitive logic from ground potential differences and reduces electromagnetic interference. The device's small SOIC-16 package makes it suitable for space-constrained designs.
推荐
Motor Control and Inverter Drives
In motor control systems, the ADUM1301ARWZ-RL7 isolates gate driver signals and feedback paths, protecting the control circuitry from high-voltage transients and switching noise. Its 25 kV/µs CMTI is critical for maintaining signal integrity in the presence of fast-switching IGBTs or MOSFETs. The 1 Mbps data rate is adequate for PWM control signals, and the wide supply range allows interfacing with both 3.3V and 5V logic. The device's robust isolation (2.5 kVrms) ensures safety in industrial drives, while its low propagation delay supports real-time control loops. It is commonly used in variable frequency drives, servo drives, and robotics.
推荐
Power Supply Isolation
The ADUM1301ARWZ-RL7 is used to isolate control signals in power supply designs, such as feedback loops and enable signals, providing safety isolation between primary and secondary sides. Its 2.5 kVrms isolation rating meets safety standards for many power applications. The 1 Mbps data rate is sufficient for control signals, and the high CMTI ensures reliable operation in the presence of switching noise. The device's low power consumption and wide supply range make it suitable for both AC-DC and DC-DC converters. By isolating the control circuitry, it improves system reliability and protects users from hazardous voltages.
推荐
Medical Device Isolation
The ADUM1301ARWZ-RL7 provides galvanic isolation for medical devices, ensuring patient safety by isolating sensitive electronics from high voltages. Its 2.5 kVrms isolation rating meets common medical safety standards, and the low power consumption is ideal for battery-powered devices. The 1 Mbps data rate is sufficient for monitoring signals, and the high CMTI ensures reliable operation in the presence of electrosurgical equipment noise. The device's small package and wide temperature range make it suitable for portable and wearable medical devices. It is commonly used in patient monitors, infusion pumps, and diagnostic equipment.
推荐
Communication Systems
The ADUM1301ARWZ-RL7 is used in communication systems to isolate digital interfaces, such as between a baseband processor and an RF transceiver, preventing ground loops and reducing noise. Its 1 Mbps data rate is suitable for control and status signals, while the high CMTI ensures reliable operation in RF environments. The device's low propagation delay and pulse width distortion maintain signal integrity, and the wide supply range allows interfacing with various logic levels. It is commonly used in base stations, routers, and network equipment. The isolation barrier protects sensitive components from voltage spikes and improves system reliability.
推荐
推荐产品汇总
工程参考数据： ADUM1301ARWZ-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 | ADUM1301ARWZ | ADUM1301BRWZ | ADUM1301CRWZ | ISO7731DW |
|---|---|---|---|---|---|
| Package | 16-SOIC (0.295", 7.50 mm Width) | 16-SOIC (0.295", 7.50 mm Width) | 16-SOIC (0.295", 7.50 mm Width) | 16-SOIC (0.295", 7.50 mm Width) | 16-SOIC (0.295", 7.50 mm Width) |
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Texas Instruments |
| Isolation Voltage | 2500 Vrms | 2500 Vrms | 2500 Vrms | 2500 Vrms | 2500 Vrms |
| Data Rate | 1 Mbps | 1 Mbps | 10 Mbps | 90 Mbps | 1 Mbps |
| CMTI | 25 kV/µs | 25 kV/µs | 25 kV/µs | 25 kV/µs | 100 kV/µs |
| Supply Voltage Range | 2.7 V to 5.5 V | 2.7 V to 5.5 V | 2.7 V to 5.5 V | 2.7 V to 5.5 V | 2.25 V to 5.5 V |
| Propagation Delay | 100 ns (typical) | 100 ns (typical) | 50 ns (typical) | 32 ns (typical) | 11 ns (typical) |
| Operating Temperature | -40°C to +105°C | -40°C to +105°C | -40°C to +105°C | -40°C to +105°C | -55°C to +125°C |
关键差异点
- iCoupler technology provides superior reliability compared to optocouplers （对比 Optocoupler-based isolators)
- High CMTI of 25 kV/µs ensures reliable operation in noisy environments （对比 ISO7731DW (100 kV/µs))
- Wide supply voltage range (2.7V to 5.5V) enables voltage translation （对比 ADUM1301BRWZ (10 Mbps))
设计说明
Maintain proper creepage and clearance distances between the high-voltage and low-voltage sides of the PCB to meet safety standards. For 2.5 kVrms isolation, a minimum creepage of 4 mm is recommended for basic insulation, and 8 mm for reinforced insulation. Use a PCB material with adequate CTI (Comparative Tracking Index) and ensure the isolation barrier is free of copper traces or vias that could reduce isolation.
Place 0.1 µF decoupling capacitors close to the VDD1 and VDD2 pins on both sides of the isolator. Additionally, use a 10 µF bulk capacitor on each supply rail to handle transient currents. The supply voltage should be within the 2.7 V to 5.5 V range, and the power supply should be stable to ensure reliable operation.
Keep the traces between the isolator and the transceiver or controller as short as possible to minimize parasitic capacitance and inductance. Avoid routing high-speed signals near the isolation barrier. Use ground planes on both sides, but do not connect them across the barrier. This reduces noise coupling and improves CMTI performance.
合规信息
RoHS compliant per Analog Devices product page. No AEC-Q100 qualification for this part.
