ADUM5402ARWZ-RL7 - Quad-Channel Digital Isolator with isoPower | Analog Devices
MPN： ADUM5402ARWZ-RL7 ✓ 啟用中ADUM5402ARWZ-RL7 概覽
Digital isolators are components that transfer digital signals across an isolation barrier while preventing DC and unwanted AC currents from flowing between two circuits. They are essential in applications where safety, ground loop elimination, or noise immunity is required. The ADUM5402 belongs to the family of digital isolators, which are part of the broader category of interface ICs. Its integrated isoPower technology sets it apart by providing isolated power, eliminating the need for a separate isolated DC-DC converter.
Key features include 2.5 kVrms isolation voltage, 25 kV/µs common-mode transient immunity (CMTI), and a data rate of 1 Mbps. The integrated DC-to-DC converter provides up to 500 mW of regulated output power, which can be used to power isolated side circuitry. The device supports a wide supply range of 3.0V to 5.5V and has a typical quiescent current of 2.3 mA per channel. It is RoHS compliant and operates over the industrial temperature range of -40°C to +105°C.
Technically, the ADUM5402 uses Analog Devices' iCoupler technology, which employs chip-scale transformers for isolation rather than optocouplers. This results in higher reliability, better timing accuracy, and lower power consumption. The integrated isoPower converter uses a push-pull architecture to generate isolated power, providing a regulated output that can be used to power external components. The device also features an enable pin for power management and thermal shutdown protection.
Typical applications include industrial field bus isolation, isolated SPI/UART interfaces, power supply control, and data acquisition systems. The ADUM5402 is particularly suited for applications where both signal and power isolation are needed, such as in motor drives, PLCs, and medical equipment. Its compact SOIC-16 package and integrated power make it an ideal choice for space-limited designs.
When designing with this device, ensure proper PCB layout with adequate creepage and clearance distances for the isolation barrier. The integrated DC-DC converter requires external capacitors for stability and filtering. Also, consider the total power budget, as the 500 mW output is shared between the isolated side and the converter's own losses.
直接替換替代品，適用於 ADUM5402ARWZ-RL7 — 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： ADUM5402ARWZ-RL7 （相同外形與佔位） — 差異在於 Package, Input Supply Voltage, Common-Mode Transient Immunity (CMTI), Data Rate, Operating Temperature Range.
ADUM5402ARWZ
✅ 直接替換聯絡詢價
查看資料表 →ADUM5402BRWZ
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
ADUM5402CRWZ
✅ 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 →ADUM5403ARWZ
✅ 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 →ADUM5402ARWZ-RL7 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, up to 500 mW |
| Supply Voltage Range | 3.0 V to 5.5 V |
| 封裝 | 16-SOIC (0.295", 7.50mm Width) |
| 安裝類型 | Surface Mount |
| 工作溫度範圍 | -40°C to +105°C |
| Quiescent Current (per channel) | 2.3 mA (typical) |
| RoHS 狀態 | Compliant |
| Channel Directionality | Unidirectional |
| Isolation Technology | iCoupler |
ADUM5402ARWZ-RL7 腳位配置
| 腳位 1 | VDD1 — Primary side supply voltage (3.0V to 5.5V) |
| 腳位 2 | GND1 — Primary side ground |
| 腳位 3 | VIA — Input channel A (primary side) |
| 腳位 4 | VIB — Input channel B (primary side) |
| 腳位 5 | VIC — Input channel C (primary side) |
| 腳位 6 | VID — Input channel D (primary side) |
| 腳位 7 | GND1 — Primary side ground |
| 腳位 8 | NC — No connect |
| 腳位 9 | VISO — Isolated output voltage (from DC-DC converter) |
| 腳位 10 | GNDISO — Isolated ground |
| 腳位 11 | VOA — Output channel A (secondary side) |
| 腳位 12 | VOB — Output channel B (secondary side) |
| 腳位 13 | VOC — Output channel C (secondary side) |
| 腳位 14 | VOD — Output channel D (secondary side) |
| 腳位 15 | GNDISO — Isolated ground |
| 腳位 16 | VDD2 — Secondary side supply voltage (3.0V to 5.5V) |
典型應用
ADUM5402ARWZ-RL7 適用於 6 應用s: Industrial Fieldbus Isolation, Isolated SPI/UART Interface, Power Supply Control, Data Acquisition Systems, Medical Equipment Isolation, Motor Drive Isolation.
Industrial Fieldbus Isolation
The ADUM5402ARWZ-RL7 provides both signal and power isolation for industrial fieldbus interfaces such as RS-485, CAN, and PROFIBUS. Its 2.5 kVrms isolation and 25 kV/µs CMTI ensure reliable communication in harsh industrial environments with high electrical noise. The integrated DC-DC converter supplies up to 500 mW to power the isolated side, eliminating the need for a separate isolated power supply. This simplifies PCB design and reduces component count. The 1 Mbps data rate is sufficient for most fieldbus protocols, and the wide supply range of 3.0V to 5.5V accommodates various logic levels. The SOIC-16 package is compact, making it suitable for space-constrained industrial modules.
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Isolated SPI/UART Interface
The ADUM5402ARWZ-RL7 is ideal for isolating SPI or UART communication between microcontrollers and peripherals such as ADCs, DACs, or sensors. Its four unidirectional channels can be configured for SPI (SCLK, MOSI, MISO, CS) or UART (TX, RX, plus control signals). The integrated DC-DC converter provides isolated power to the peripheral side, enabling a fully isolated interface without external components. The 1 Mbps data rate supports common SPI clock speeds up to 1 MHz. The device's low propagation delay and high CMTI ensure data integrity in noisy environments. The SOIC-16 package is easy to route, and the wide supply range allows interfacing with both 3.3V and 5V logic.
推薦
Power Supply Control
The ADUM5402ARWZ-RL7 is used to isolate control signals in power supply applications, such as feedback loops and enable signals in isolated DC-DC converters. Its integrated isoPower can provide bias power to the secondary-side controller, eliminating the need for an auxiliary winding. The 2.5 kVrms isolation ensures safety isolation between primary and secondary circuits. The 1 Mbps data rate is adequate for PWM control signals, and the high CMTI prevents false triggering from switching transients. The device's wide supply range and low quiescent current make it suitable for power-efficient designs. The SOIC-16 package is compact, fitting well in power supply modules.
推薦
Data Acquisition Systems
In data acquisition systems, the ADUM5402ARWZ-RL7 isolates the analog front-end from the digital processing side, preventing ground loops and noise coupling. The integrated DC-DC converter provides isolated power to the analog circuitry, such as sensors and amplifiers, ensuring clean and accurate measurements. The 1 Mbps data rate is sufficient for streaming digitized data from ADCs. The device's high CMTI (25 kV/µs) rejects common-mode transients that could corrupt measurements. The wide supply range allows operation from 3.3V or 5V rails. The SOIC-16 package is suitable for compact DAQ modules, and the four channels can be used for data, clock, and control signals.
推薦
Medical Equipment Isolation
The ADUM5402ARWZ-RL7 provides reinforced isolation for medical equipment, ensuring patient safety by isolating low-voltage control circuits from high-voltage sections. Its 2.5 kVrms isolation rating meets basic insulation requirements for many medical applications. The integrated DC-DC converter supplies isolated power to sensors and signal conditioning circuits, reducing the risk of leakage currents. The 1 Mbps data rate is adequate for monitoring signals such as ECG, SpO2, and temperature. The device's high CMTI ensures reliable operation in the presence of defibrillator discharges and other transients. The SOIC-16 package is compact, suitable for portable medical devices. The wide supply range accommodates battery-powered designs.
推薦
Motor Drive Isolation
The ADUM5402ARWZ-RL7 is used to isolate control signals in motor drive systems, separating the low-voltage controller from the high-voltage power stage. Its 2.5 kVrms isolation protects the controller from high-voltage transients and ground bounce. The integrated DC-DC converter can power the gate driver circuitry on the high-voltage side, simplifying the design. The 1 Mbps data rate is sufficient for PWM control signals, and the high CMTI (25 kV/µs) ensures reliable operation in the presence of fast switching transients. The device's wide supply range and low quiescent current make it suitable for energy-efficient drives. The SOIC-16 package is compact, fitting in motor drive modules.
推薦
推薦產品摘要
工程參考資料，適用於 ADUM5402ARWZ-RL7 — 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 | ADUM5402ARWZ | ADUM5402BRWZ | ADUM5402CRWZ |
|---|---|---|---|---|
| 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 | Analog Devices |
| Data Rate | 1 Mbps | 1 Mbps | 10 Mbps | 25 Mbps |
| Isolation Voltage | 2500 Vrms | 2500 Vrms | 2500 Vrms | 2500 Vrms |
| Number of Channels | 4 | 4 | 4 | 4 |
| Integrated DC-DC Converter | Yes, 500 mW | Yes, 500 mW | Yes, 500 mW | Yes, 500 mW |
| CMTI | 25 kV/µs | 25 kV/µs | 25 kV/µs | 25 kV/µs |
| Supply Voltage Range | 3.0V to 5.5V | 3.0V to 5.5V | 3.0V to 5.5V | 3.0V to 5.5V |
主要差異化特點
- Integrated DC-DC converter provides up to 500 mW of isolated power (對比ADUM5402ARWZ (non-integrated))
- High CMTI of 25 kV/µs (對比ADUM5402BRWZ)
- Lower data rate (1 Mbps) compared to ADUM5402CRWZ (25 Mbps) (對比ADUM5402CRWZ)
設計說明
For optimal isolation performance, maintain at least 8mm creepage and clearance distance between the primary and secondary sides on the PCB. Place the ADUM5402ARWZ-RL7 such that the isolation barrier is clearly defined, and avoid routing traces across the barrier. Use a solid ground plane on each side, but do not connect them together. The integrated DC-DC converter requires external capacitors on VDD1, VDD2, and VISO pins; place 0.1µF and 10µF capacitors close to each pin for stability and noise filtering.
The ADUM5402ARWZ-RL7 dissipates power internally due to the integrated DC-DC converter. At maximum load (500 mW output), the power dissipation can be significant. Ensure adequate copper area on the PCB for heat sinking, especially on the SOIC-16 package's exposed pad if present. The thermal resistance of the package is [DATA_NEEDED: Thermal Resistance], so calculate junction temperature to ensure it stays below the maximum rating of 150°C. For high ambient temperatures, consider derating the output power.
A common mistake is exceeding the maximum data rate of 1 Mbps, which can cause data corruption. Also, ensure that the total power drawn from the isolated side does not exceed 500 mW, as this can cause the DC-DC converter to shut down. Additionally, do not connect the primary and secondary grounds together, as this defeats the isolation purpose. Always refer to the datasheet for proper decoupling and layout guidelines.
合規資訊
RoHS compliant per distributor data. Other compliance information not specified in provided data.