ADUM5403ARWZ - Quad-Channel Digital Isolator with isoPower | Analog Devices
MPN： ADUM5403ARWZ ✓ 啟用中ADUM5403ARWZ 概覽
Digital isolators are components that transmit digital signals across an isolation barrier, preventing high-voltage transients and ground loops from affecting sensitive circuitry. They are essential in applications requiring galvanic isolation, such as industrial automation, medical equipment, and power systems. The ADUM5403 integrates the isolation barrier and a DC-to-DC converter, eliminating the need for a separate isolated power supply.
Key features include four isolation channels, an integrated DC-to-DC converter providing up to 500 mW of regulated isolated power, and a choice of 5V or 3.3V output. The device uses iCoupler technology, which combines high-speed CMOS and monolithic transformer isolation, offering reliable performance and long-term stability. It also features thermal shutdown protection and a soft-start function to manage inrush current.
The ADUM5403ARWZ is designed for robust operation in harsh environments, with a wide supply voltage range and high CMTI ensuring reliable data transfer in noisy industrial settings. The integrated DC-to-DC converter simplifies power supply design, reducing component count and board space. The device is RoHS compliant and suitable for surface-mount assembly.
Typical applications include industrial field bus isolation, isolated SPI/UART interfaces, motor control, and power supply monitoring. The device is also used in medical equipment where patient safety requires galvanic isolation. Its compact SOIC-16 package and integrated power make it ideal for space-constrained designs.
When designing with the ADUM5403ARWZ, ensure proper PCB layout with adequate creepage and clearance distances for the isolation rating. Place decoupling capacitors close to the power pins and follow the recommended layout guidelines in the datasheet to achieve optimal performance and reliability.
直接替換替代品，適用於 ADUM5403ARWZ — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： ADUM5403ARWZ （相同外形與佔位） — 差異在於 Package, Input Supply Voltage, Data Rate, Number of Channels, Isolation Voltage.
ADUM5403ARWZ-RL
✅ 直接替換📋 參考替代品（不在目錄中）
ADUM5401ARWZ
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →ADUM5402ARWZ
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →ADUM5404ARWZ
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →ISO7742FDBQR
✅ 直接替換 ⚠️ 規格未經驗證✗ 缺貨
$2.35 / 單位
查看資料表 →ADUM5403ARWZ 規格
| Number of Channels | 4 |
| Isolation Voltage | 2500 Vrms |
| 資料速率 | 1 Mbps |
| Common-Mode Transient Immunity (CMTI) | 25 kV/µs |
| Integrated DC-to-DC Converter | Yes, up to 500 mW |
| Output Voltage (isoPower) | 5V or 3.3V |
| Input Supply Voltage | 5V or 3.3V |
| 封裝 | 16-SOIC (0.295", 7.50mm Width) |
| 工作溫度範圍 | -40°C to +105°C |
| RoHS 狀態 | Compliant |
| 安裝類型 | Surface Mount |
| Technology | iCoupler |
ADUM5403ARWZ 腳位配置
| 腳位 1 | VDD1 — Input supply voltage (3.3V or 5V) |
| 腳位 2 | GND1 — Ground for input side |
| 腳位 3 | VIA — Data input channel A |
| 腳位 4 | VIB — Data input channel B |
| 腳位 5 | VIC — Data input channel C |
| 腳位 6 | VID — Data input channel D |
| 腳位 7 | GND1 — Ground for input side |
| 腳位 8 | NC — No connect |
| 腳位 9 | VISO — Isolated output voltage (3.3V or 5V) |
| 腳位 10 | GNDISO — Ground for isolated side |
| 腳位 11 | VOA — Data output channel A |
| 腳位 12 | VOB — Data output channel B |
| 腳位 13 | VOC — Data output channel C |
| 腳位 14 | VOD — Data output channel D |
| 腳位 15 | GNDISO — Ground for isolated side |
| 腳位 16 | VDD1 — Input supply voltage (3.3V or 5V) |
典型應用
ADUM5403ARWZ 適用於 6 應用s: Industrial Field Bus Isolation, Isolated SPI/UART Interface, Motor Control, Power Supply Monitoring, Medical Equipment Isolation, Isolated Sensor Interface.
Industrial Field Bus Isolation
The ADUM5403ARWZ provides galvanic isolation for industrial field buses such as RS-485, CAN, and Profibus. Its 2500 Vrms isolation and 25 kV/µs CMTI ensure reliable data transmission in noisy factory environments. The integrated DC-to-DC converter supplies isolated power to the bus transceiver, eliminating the need for a separate isolated power supply. This simplifies PCB design and reduces component count, making it ideal for space-constrained industrial modules. The 1 Mbps data rate is sufficient for most field bus protocols, and the wide temperature range supports harsh operating conditions.
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Isolated SPI/UART Interface
The ADUM5403ARWZ is ideal for isolating SPI or UART interfaces between microcontrollers and peripherals. Its four forward channels can carry SCLK, MOSI, MISO, and CS signals, while the integrated DC-to-DC converter powers the isolated side. The 1 Mbps data rate supports standard SPI and UART speeds, and the 2500 Vrms isolation protects sensitive logic from ground potential differences. The device's low propagation delay ensures minimal signal skew, maintaining data integrity. This application is common in motor drives, power converters, and medical devices where isolation is critical for safety.
推薦
Motor Control
In motor control systems, the ADUM5403ARWZ isolates the control circuitry from the high-voltage power stage. Its 2500 Vrms isolation protects the microcontroller from voltage transients and ground bounce. The integrated DC-to-DC converter provides isolated power for gate drivers or current sensors, reducing external components. The 25 kV/µs CMTI ensures reliable operation in the presence of fast-switching power devices. The 1 Mbps data rate is adequate for PWM control signals and feedback. This device is suitable for industrial motor drives, robotics, and automotive applications.
推薦
Power Supply Monitoring
The ADUM5403ARWZ is used to isolate monitoring circuits in power supplies, allowing safe measurement of voltages and currents on the high-voltage side. Its integrated DC-to-DC converter powers the monitoring ICs, eliminating the need for an isolated bias supply. The 2500 Vrms isolation ensures operator safety and protects low-voltage control electronics. The 1 Mbps data rate is sufficient for telemetry and status signals. The device's small SOIC-16 package fits compact power modules. This application is common in server power supplies, industrial power systems, and battery management systems.
推薦
Medical Equipment Isolation
The ADUM5403ARWZ provides galvanic isolation in medical devices to protect patients and operators from electric shock. Its 2500 Vrms isolation meets safety standards for patient-connected equipment. The integrated DC-to-DC converter supplies isolated power to sensors and signal conditioning circuits, simplifying design. The 1 Mbps data rate supports biosignal acquisition and control signals. The device's low power consumption and small footprint are ideal for portable medical devices. This application includes patient monitors, infusion pumps, and diagnostic equipment.
推薦
Isolated Sensor Interface
The ADUM5403ARWZ is used to interface sensors to a controller while providing galvanic isolation. Its four channels can carry sensor data, clock, and control signals. The integrated DC-to-DC converter powers the sensor side, eliminating the need for an isolated supply. The 2500 Vrms isolation prevents ground loops and noise coupling, improving measurement accuracy. The 1 Mbps data rate supports high-speed sensors such as encoders and temperature probes. The device's robust CMTI ensures reliable operation in industrial environments. This application is common in factory automation and process control.
推薦
推薦產品摘要
工程參考資料，適用於 ADUM5403ARWZ — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | ADUM5403ARWZ-RL | ADUM5401ARWZ | ADUM5402ARWZ | ADUM5404ARWZ | ISO7742FDBQR |
|---|---|---|---|---|---|---|
| Package | 16-SOIC (0.295", 7.50mm Width) | 16-SOIC (same) | 16-SOIC (same) | 16-SOIC (same) | 16-SOIC (same) | 16-SOIC (same) |
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Texas Instruments |
| Isolation Voltage | 2500 Vrms | 2500 Vrms | 2500 Vrms | 2500 Vrms | 2500 Vrms | 5000 Vrms |
| Data Rate | 1 Mbps | 1 Mbps | 1 Mbps | 1 Mbps | 1 Mbps | 100 Mbps |
| Integrated DC-DC Converter | Yes (500 mW) | Yes (500 mW) | Yes (500 mW) | Yes (500 mW) | Yes (500 mW) | No |
| Channel Configuration | 4 forward | 4 forward | 3 forward, 1 reverse | 2 forward, 2 reverse | 4 reverse | 4 forward |
| CMTI | 25 kV/µs | 25 kV/µs | 25 kV/µs | 25 kV/µs | 25 kV/µs | 100 kV/µs |
| 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 | -55°C to +125°C |
主要差異化特點
- Integrated DC-to-DC converter (對比ISO7742FDBQR)
- Lower data rate but sufficient for many applications (對比ISO7742FDBQR)
- Multiple channel configurations in same family (對比ADUM5401ARWZ)
設計說明
For optimal isolation performance, maintain at least 8 mm creepage and clearance distance between the input and output sides of the ADUM5403ARWZ on the PCB. Use a solid ground plane under the device and avoid routing high-voltage traces near the isolation barrier. Follow the layout guidelines in the datasheet to ensure the isolation rating is met.
The integrated DC-to-DC converter can deliver up to 500 mW of isolated power. Ensure the input supply can handle the total power consumption, including the load on the isolated side. Use low-ESR ceramic capacitors (e.g., 0.1 µF and 10 µF) on both VDD1 and VISO pins to stabilize the converter and reduce ripple.
Do not exceed the absolute maximum ratings for supply voltage or output current. The ADUM5403ARWZ is not intended for use as a general-purpose power supply; the isolated power is limited to 500 mW. Ensure the total load on VISO does not exceed this limit to avoid thermal shutdown or damage.
合規資訊
RoHS compliant per distributor listings. Other compliance data not explicitly stated in the provided data.