ADUM5404ARWZ - Quad-Channel Digital Isolator with isoPower | Analog Devices
MPN： ADUM5404ARWZ ✓ 啟用中ADUM5404ARWZ 概覽
Digital isolators are components that transfer digital signals across an isolation barrier while preventing unwanted DC and noise from passing between two ground domains. They are essential in systems where safety, noise immunity, or ground potential differences require galvanic isolation. The ADUM5404 integrates the isolation barrier and a DC-to-DC converter, eliminating the need for a separate isolated power supply, thus simplifying design and reducing board space.
Key features include four independent isolation channels, an integrated DC-to-DC converter providing up to 500 mW of regulated, isolated power, and a wide operating temperature range. The device operates from a single 5V supply and provides a regulated 5V isolated output. Its high CMTI of 25 kV/µs ensures reliable operation in noisy industrial environments, and its 1 Mbps data rate is suitable for most control and communication interfaces.
Technically, the ADUM5404 uses Analog Devices' iCoupler technology, which employs chip-scale transformers for isolation, offering superior performance compared to optocouplers in terms of speed, power consumption, and reliability. The integrated DC-to-DC converter uses a push-pull topology with an internal oscillator, providing a regulated output with typical efficiency around 30-40% at full load. The device includes under-voltage lockout (UVLO) and thermal shutdown protection.
Typical applications include industrial fieldbus isolation, motor control interfaces, isolated SPI/UART communication, and medical equipment requiring patient isolation. The integrated power supply makes it ideal for isolated sensor interfaces and data acquisition systems where a separate isolated supply is impractical.
When designing with the ADUM5404, ensure adequate bypass capacitors on both input and output power pins to maintain stability and reduce noise. The datasheet recommends a 0.1 µF and 10 µF capacitor on the input and a 0.1 µF and 10 µF on the isolated output. Also, consider the total power budget, as the integrated converter's efficiency limits the available output current.
直接替換替代品，適用於 ADUM5404ARWZ — 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： ADUM5404ARWZ （相同外形與佔位） — 差異在於 Package, Input Supply Voltage, Data Rate, Isolation Voltage, Output Supply Voltage.
ADUM5404CRWZ
✅ 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 →ADUM5403ARWZ
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →ISO7742DW
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
ADUM5404ARWZ 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-DC Converter | Yes, isoPower |
| Isolated Output Power | 500 mW |
| Input Supply Voltage | 5 V |
| Isolated Output Voltage | 5 V (regulated) |
| 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 |
ADUM5404ARWZ 腳位配置
| 腳位 1 | VDD1 — Input supply voltage (5V) |
| 腳位 2 | GND1 — Input ground |
| 腳位 3 | VIA — Input channel A |
| 腳位 4 | VOA — Output channel A |
| 腳位 5 | VIB — Input channel B |
| 腳位 6 | VOB — Output channel B |
| 腳位 7 | VIC — Input channel C |
| 腳位 8 | VOC — Output channel C |
| 腳位 9 | GND2 — Isolated ground |
| 腳位 10 | VISO — Isolated output voltage (5V) |
| 腳位 11 | VID — Input channel D |
| 腳位 12 | VOD — Output channel D |
| 腳位 13 | NC — No connect |
| 腳位 14 | NC — No connect |
| 腳位 15 | GND1 — Input ground |
| 腳位 16 | VDD1 — Input supply voltage (5V) |
典型應用
ADUM5404ARWZ 適用於 6 應用s: Industrial Fieldbus Isolation, Motor Control Interface, Isolated SPI/UART Communication, Medical Equipment Patient Isolation, Isolated Sensor Data Acquisition, Power Supply Feedback Isolation.
Industrial Fieldbus Isolation
The ADUM5404ARWZ provides galvanic isolation for fieldbus interfaces such as RS-485, CAN, and PROFIBUS. Its integrated DC-DC converter supplies isolated power to the bus transceiver, eliminating the need for a separate isolated supply. With 2500 Vrms isolation and 25 kV/µs CMTI, it ensures reliable communication in noisy industrial environments. The 1 Mbps data rate is sufficient for most fieldbus protocols, and the 16-lead SOIC package fits compact PLC and I/O modules.
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Motor Control Interface
In motor control systems, the ADUM5404ARWZ isolates the microcontroller from the power stage, protecting low-voltage logic from high-voltage transients. Its integrated DC-DC converter powers the gate driver and feedback circuits on the isolated side. The high CMTI of 25 kV/µs ensures stable operation during fast switching of IGBTs or MOSFETs. The 1 Mbps data rate handles PWM and encoder signals, while the 500 mW output power is sufficient for gate drivers and sensors.
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Isolated SPI/UART Communication
The ADUM5404ARWZ is ideal for isolating SPI or UART interfaces between microcontrollers and peripheral devices such as ADCs, DACs, or sensors. Its four channels can carry SCLK, MOSI, MISO, and CS signals, while the integrated DC-DC converter powers the isolated side. The 1 Mbps data rate supports most SPI and UART speeds, and the 2500 Vrms isolation protects against ground loops and noise. The compact SOIC package is suitable for space-constrained designs.
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Medical Equipment Patient Isolation
The ADUM5404ARWZ provides the isolation required for medical devices to protect patients from electric shock. Its 2500 Vrms isolation rating meets basic insulation requirements for many medical applications. The integrated DC-DC converter eliminates the need for a separate isolated supply, simplifying the design of patient monitoring and diagnostic equipment. The low power consumption and small package make it suitable for portable devices.
推薦
Isolated Sensor Data Acquisition
The ADUM5404ARWZ is used in data acquisition systems to isolate sensors from the main controller, preventing ground loops and noise. Its integrated DC-DC converter powers the sensor and signal conditioning circuitry on the isolated side. The 1 Mbps data rate is sufficient for most sensor interfaces, and the 500 mW output power can drive multiple sensors. The high CMTI ensures accurate data transfer in industrial environments.
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Power Supply Feedback Isolation
The ADUM5404ARWZ can be used to isolate feedback signals in power supply designs, providing safety and noise immunity. Its integrated DC-DC converter can power the secondary-side control circuitry, eliminating the need for an auxiliary winding. The 1 Mbps data rate is sufficient for PWM feedback signals, and the 2500 Vrms isolation protects the primary-side controller from secondary-side transients.
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推薦產品摘要
工程參考資料，適用於 ADUM5404ARWZ — 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 | ADUM5404CRWZ | ADUM5401ARWZ | ADUM5402ARWZ | ADUM5403ARWZ | ISO7742DW |
|---|---|---|---|---|---|---|
| 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) |
| 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 | Yes | Yes | Yes | Yes | No |
| Isolated Output Power | 500 mW | 500 mW | 500 mW | 500 mW | 500 mW | N/A |
| CMTI | 25 kV/µs | 25 kV/µs | 25 kV/µs | 25 kV/µs | 25 kV/µs | 100 kV/µs |
主要差異化特點
- Integrated DC-DC converter (對比ISO7742DW)
- Lower supply current (對比ADUM5404CRWZ)
- Quad-channel configuration (對比ADUM5401ARWZ)
設計說明
The integrated DC-DC converter requires proper bypassing on both input and output. Place a 0.1 µF and 10 µF capacitor close to VDD1 and GND1, and similarly on VISO and GND2. The datasheet recommends low-ESR ceramic capacitors for high-frequency noise suppression and larger value capacitors for ripple and regulation.
Maintain adequate creepage and clearance distances on the PCB to meet the isolation rating. The 16-lead SOIC package has a minimum creepage of 7.6 mm, but ensure the PCB layout provides at least that distance between input and output sides. Use a ground plane on each side but do not connect them across the isolation barrier.
The ADUM5404ARWZ dissipates power due to the integrated DC-DC converter. At full load (500 mW output), the power dissipation can be significant. Ensure adequate copper area on the PCB for heat sinking, especially in high-temperature environments. The operating temperature range is -40°C to +105°C, so verify thermal performance in your application.
合規資訊
RoHS compliant per distributor listings. No AEC-Q100 qualification indicated for this part.