ADUM1440ARWZ - Quad-Channel Digital Isolator | Analog Devices
料号： ADUM1440ARWZ ✓ 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 |
ADUM1440ARWZ 概述
Digital isolators are components that transmit digital signals across an isolation barrier, providing galvanic isolation to protect circuits and users from high voltages, ground loops, and noise. Unlike optocouplers, which use LEDs and photodiodes, iCoupler devices use monolithic air-core transformers and high-speed CMOS, offering superior performance in terms of speed, power consumption, and reliability. The ADUM1440 is part of the ADuM140x family, which includes variants with different channel configurations and data rates.
Key features of the ADUM1440ARWZ include low power operation: at 5V, it consumes 1.0 mA per channel max at 0-2 Mbps, 3.5 mA per channel at 10 Mbps, and 31 mA per channel at 100 Mbps. At 3V, the power consumption is even lower. The device supports a wide operating temperature range of -40°C to +105°C, making it suitable for harsh environments. It is RoHS compliant and available in a standard SOIC-16 package.
The ADUM1440 uses iCoupler technology, which integrates micro-transformers on a single chip, eliminating the need for external components and providing high reliability. The isolation barrier is rated for 2500 Vrms, and the device offers high CMTI of 25 kV/µs, ensuring robust operation in noisy industrial environments. The 1 Mbps data rate is sufficient for many control and monitoring applications, and the low power consumption makes it ideal for battery-powered or power-sensitive designs.
Typical applications include industrial field bus isolation, motor control, power supply monitoring, and medical equipment. The ADUM1440 is also used in communication interfaces, such as RS-485 and CAN, where galvanic isolation is required. Its small package and low power make it a versatile choice for space-constrained designs.
When designing with the ADUM1440, ensure proper PCB layout to maintain isolation spacing and minimize parasitic capacitance. The device requires a bypass capacitor on each supply pin, and the ground planes should be separated to preserve the isolation barrier. For higher data rates, consider the ADUM1400 series with 10 Mbps or 100 Mbps options.
直接替换替代料： ADUM1440ARWZ ——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： ADUM1440ARWZ （相同外形与封装尺寸） ——差异在于 Package, Data Rate, Operating Temperature Range, Channel Directionality, Output Type.
快速对比工具——选择替代料号进行并排对比：
ADUM1400ARWZ
✅ 直接替换✓ 有现货
$2.22 / 个
查看数据手册 →ADUM1401ARWZ
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$2.19 / 个
查看数据手册 →ADUM1402ARWZ
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
ADUM1441ARWZ
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$2.1 / 个
查看数据手册 →ADUM1442ARWZ
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$2.25 / 个
查看数据手册 →ISO7741DW
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
SI8641BB-B-IS1
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
ADUM1440ARWZ 规格参数
| Number of Channels | 4 |
| Channel Directionality | 4/0 (all forward) |
| Isolation Voltage | 2500 Vrms |
| 数据速率 | 1 Mbps |
| CMTI | 25 kV/µs |
| 电源电压 | 3.0V to 5.5V |
| Power Consumption (5V, 0-2 Mbps) | 1.0 mA per channel max |
| Power Consumption (5V, 10 Mbps) | 3.5 mA per channel max |
| Power Consumption (5V, 100 Mbps) | 31 mA per channel max |
| 工作温度范围 | -40°C to +105°C |
| 封装 | 16-SOIC (0.295", 7.50mm Width) |
| 安装类型 | Surface Mount |
| RoHS 状态 | Compliant |
| Technology | iCoupler |
ADUM1440ARWZ 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 | VIB — Input channel B |
| 引脚 5 | VIC — Input channel C |
| 引脚 6 | VID — Input channel D |
| 引脚 7 | GND1 — Ground for side 1 |
| 引脚 8 | NC — No connect |
| 引脚 9 | NC — No connect |
| 引脚 10 | GND2 — Ground for side 2 |
| 引脚 11 | VOD — Output channel D |
| 引脚 12 | VOC — Output channel C |
| 引脚 13 | VOB — Output channel B |
| 引脚 14 | VOA — Output channel A |
| 引脚 15 | GND2 — Ground for side 2 |
| 引脚 16 | VDD2 — Supply voltage for side 2 |
典型应用
ADUM1440ARWZ 适用于 6 应用s: Industrial Field Bus Isolation, Motor Control, Power Supply Monitoring, Medical Equipment, Communication Interfaces, Data Acquisition Systems.
Industrial Field Bus Isolation
The ADUM1440ARWZ provides galvanic isolation for industrial field bus interfaces such as RS-485 and CAN. Its 2500 Vrms isolation voltage protects microcontrollers from ground loops and high-voltage transients. The 1 Mbps data rate is sufficient for most field bus protocols, and the low power consumption (1.0 mA per channel at 5V) is ideal for power-sensitive nodes. The high CMTI of 25 kV/µs ensures reliable operation in electrically noisy factory environments, preventing data corruption from fast transients.
推荐
Motor Control
In motor control systems, the ADUM1440ARWZ isolates the low-voltage control circuitry from the high-voltage power stage. The 2500 Vrms isolation rating provides safety and prevents noise from the motor drivers from affecting the controller. The 1 Mbps data rate is adequate for PWM control signals and feedback. The device's low power consumption and wide temperature range (-40°C to +105°C) make it suitable for industrial motor drives operating in harsh environments. The high CMTI ensures stable operation despite fast switching transients.
推荐
Power Supply Monitoring
The ADUM1440ARWZ is used to isolate digital monitoring signals from power supply rails. It allows safe communication between the high-voltage power stage and the low-voltage monitoring circuit. The 2500 Vrms isolation protects the monitoring electronics from high voltages. The 1 Mbps data rate is sufficient for transmitting status signals and fault flags. The low power consumption is beneficial for always-on monitoring circuits. The device's small SOIC-16 package fits compact power supply designs.
推荐
Medical Equipment
The ADUM1440ARWZ provides galvanic isolation in medical devices, ensuring patient safety by isolating low-voltage control circuits from high-voltage sections. The 2500 Vrms isolation rating meets safety standards for medical equipment. The 1 Mbps data rate is adequate for sensor data and control signals. The device's low power consumption is important for battery-operated medical devices. The wide operating temperature range and high reliability of iCoupler technology make it suitable for critical medical applications.
推荐
Communication Interfaces
The ADUM1440ARWZ is used to isolate communication interfaces like RS-485, CAN, and SPI. It provides galvanic isolation to prevent ground loops and protect against voltage spikes. The 1 Mbps data rate supports standard communication speeds. The device's low power consumption is ideal for remote sensors and nodes. The high CMTI ensures reliable data transmission in noisy environments. The SOIC-16 package is easy to integrate into existing designs.
推荐
Data Acquisition Systems
The ADUM1440ARWZ isolates digital data lines in data acquisition systems, protecting sensitive measurement circuits from noise and ground loops. The 2500 Vrms isolation rating ensures safe operation in industrial environments. The 1 Mbps data rate is sufficient for transmitting digitized sensor data. The low power consumption is beneficial for portable data loggers. The device's high CMTI prevents data corruption from transient voltages, ensuring accurate measurements.
推荐
推荐产品汇总
工程参考数据： ADUM1440ARWZ ——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 | ADUM1400ARWZ | ADUM1401ARWZ | ADUM1402ARWZ | ADUM1441ARWZ | ADUM1442ARWZ | ISO7741DW | SI8641BB-B-IS1 |
|---|---|---|---|---|---|---|---|---|
| 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) | 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 | Analog Devices | Analog Devices | Analog Devices | Texas Instruments | Skyworks Solutions |
| Isolation Voltage | 2500 Vrms | 2500 Vrms | 2500 Vrms | 2500 Vrms | 2500 Vrms | 2500 Vrms | 5000 Vrms | 2500 Vrms |
| Data Rate | 1 Mbps | 100 Mbps | 100 Mbps | 100 Mbps | 1 Mbps | 1 Mbps | 100 Mbps | 150 Mbps |
| CMTI | 25 kV/µs | 25 kV/µs | 25 kV/µs | 25 kV/µs | 25 kV/µs | 25 kV/µs | 100 kV/µs | 35 kV/µs |
| Supply Voltage | 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 | 2.25V to 5.5V | 2.5V to 5.5V |
| Channel Directionality | 4/0 | 4/0 | 3/1 | 2/2 | 3/1 | 2/2 | 4/0 | 4/0 |
| Operating Temperature | -40°C to +105°C | -40°C to +105°C | -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 | -40°C to +125°C |
关键差异点
- Low power consumption （对比 ADUM1400ARWZ)
- Lower data rate for cost savings （对比 ADUM1400ARWZ)
- Same package and pinout （对比 ISO7741DW)
设计说明
For optimal isolation performance, maintain a minimum creepage distance of 8 mm between the high-voltage and low-voltage sides on the PCB. Use a slot or cutout under the isolator to increase the creepage path. Place bypass capacitors (0.1 µF) close to VDD1 and VDD2 pins, and use separate ground planes for each side to avoid coupling noise.
The ADUM1440ARWZ consumes low power, but ensure the supply voltage is within 3.0V to 5.5V. At 5V, each channel draws up to 1.0 mA at low data rates. For higher data rates, power increases. Use a low-dropout regulator if the supply is noisy, and add a 10 µF bulk capacitor to handle transient currents.
Do not exceed the absolute maximum ratings, especially the isolation voltage (2500 Vrms). Ensure the input signals are within the supply voltage range. Avoid floating inputs by tying unused inputs to GND or VDD. Also, be aware that the ADUM1440 has a 1 Mbps data rate limit; for higher speeds, use the ADUM1400 series.
合规信息
RoHS compliant per datasheet. Other compliance info not specified in provided data.