ADUM1201ARZ-RL7 - Dual-Channel Digital Isolator 2500Vrms | Analog Devices
MPN： ADUM1201ARZ-RL7 ✓ 啟用中ADUM1201ARZ-RL7 概覽
A digital isolator is a component that transfers digital signals across a galvanic isolation barrier without allowing direct current flow. Unlike optocouplers, which use LEDs and photodiodes, iCoupler devices use monolithic transformers and high-speed CMOS to achieve higher data rates, lower power consumption, and more stable performance over temperature and lifetime. Digital isolators are essential in systems where ground potential differences, noise, or safety requirements demand isolation, such as in industrial automation, medical equipment, and data acquisition.
Key features of the ADUM1201ARZ-RL7 include 1/1 channel directionality (one forward channel and one reverse channel), which is ideal for bidirectional communication. The device delivers 2500Vrms isolation voltage, 1Mbps data rate, and 25kV/µs CMTI, ensuring reliable operation in noisy environments. The wide supply range supports both 3.3V and 5V logic levels, and the typical quiescent current is only 1.3mA per channel, making it suitable for power-sensitive applications.
Technically, the ADuM1201 combines high-speed CMOS and monolithic transformer isolation in an 8-lead SOIC package. This architecture eliminates the need for external drivers and discrete components, reducing board space and improving reliability. Unlike optocouplers, iCoupler technology does not suffer from current transfer ratio degradation, providing stable isolation performance throughout the product lifetime.
Typical applications include industrial automation for isolating field buses and sensor interfaces, medical devices where patient safety requires galvanic isolation, and data acquisition systems to prevent ground loops and noise. It is also used in power supply control, motor drives, and communication interfaces.
When designing with this device, place bypass capacitors close to the VDD1 and VDD2 pins and maintain proper PCB spacing across the isolation barrier to preserve creepage and clearance requirements. The high CMTI rating makes the part robust in fast-switching environments, but careful layout is still required to maximize isolation performance.
直接替換替代品，適用於 ADUM1201ARZ-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： ADUM1201ARZ-RL7 （相同外形與佔位） — 差異在於 Common-Mode Transient Immunity (CMTI), Isolation Voltage, Operating Temperature Range, RoHS Status, Technology.
ADUM1201ARZ
✅ 直接替換聯絡詢價
查看資料表 →ADUM1201BRZ-RL7
✅ 直接替換聯絡詢價
查看資料表 →ADUM1201CRZ
✅ 直接替換📋 參考替代品（不在目錄中）
ADUM1201WURZ
✅ 直接替換📋 參考替代品（不在目錄中）
ADUM1200ARZ-RL7
✅ 直接替換📋 參考替代品（不在目錄中）
ADUM1241ARSZ-RL7
✅ 直接替換📋 參考替代品（不在目錄中）
ADUM1201WTRZ-RL7
✅ 直接替換📋 參考替代品（不在目錄中）
ADUM1201ARZ-RL7
✅ 直接替換聯絡詢價
查看資料表 →ADUM1201ARZ-RL7 規格
| Number of Channels | 2 |
| Channel Directionality | 1/1 (one forward, one reverse) |
| Isolation Voltage | 2500 Vrms |
| 資料速率 | 1 Mbps |
| Common-Mode Transient Immunity (CMTI) | 25 kV/µs |
| Supply Voltage (VDD1) | 3.0 V to 5.5 V |
| Supply Voltage (VDD2) | 3.0 V to 5.5 V |
| Quiescent Current (per channel) | 1.3 mA typical |
| 工作溫度範圍 | -40°C to +125°C |
| 封裝 | 8-SOIC (0.154", 3.90mm width) |
| 安裝類型 | Surface Mount |
| Technology | iCoupler (monolithic transformer) |
| RoHS 狀態 | Compliant |
ADUM1201ARZ-RL7 腳位配置
| 腳位 1 | VDD1 — Supply voltage for side 1 |
| 腳位 2 | GND1 — Ground for side 1 |
| 腳位 3 | VIA — Input for channel A (side 1) |
| 腳位 4 | VOA — Output for channel A (side 1) |
| 腳位 5 | VOB — Output for channel B (side 2) |
| 腳位 6 | VIB — Input for channel B (side 2) |
| 腳位 7 | GND2 — Ground for side 2 |
| 腳位 8 | VDD2 — Supply voltage for side 2 |
典型應用
ADUM1201ARZ-RL7 適用於 6 應用s: Industrial Automation, Medical Devices, Data Acquisition Systems, Power Supply Control, Motor Drives, Communication Interfaces.
Industrial Automation
The ADUM1201ARZ-RL7 is ideal for isolating field buses and sensor interfaces in industrial automation. Its 2500Vrms isolation protects low-voltage control logic from high-voltage transients and ground loops. The 1Mbps data rate is sufficient for most industrial protocols like Modbus and CAN. The high CMTI of 25kV/µs ensures reliable operation in noisy factory environments with motor drives and inverters. The wide temperature range (-40°C to +125°C) suits harsh industrial conditions. By using iCoupler technology, it avoids the aging and nonlinearity issues of optocouplers, providing stable performance over time.
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Medical Devices
In medical devices, patient safety requires galvanic isolation between the patient-connected parts and the mains-connected parts. The ADUM1201ARZ-RL7 provides 2500Vrms isolation, which is suitable for basic isolation in many medical monitoring and diagnostic devices. Its low quiescent current (1.3mA per channel) is beneficial for battery-powered portable medical equipment. The 1Mbps data rate is adequate for transmitting vital sign signals like ECG and SpO2. The device's stable performance over temperature and lifetime, unlike optocouplers, ensures reliable long-term operation in critical medical applications. Always verify compliance with IEC 60601 standards for specific medical applications.
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Data Acquisition Systems
The ADUM1201ARZ-RL7 is used in data acquisition systems to prevent ground loops and noise between sensors and the ADC. Its 2500Vrms isolation breaks ground loops that can introduce measurement errors. The 1Mbps data rate is sufficient for sampling rates up to 100kSPS with 12-bit resolution. The high CMTI ensures that fast transients on the sensor side do not corrupt the digital signal. The device's low power consumption is advantageous in multi-channel systems where many isolators are used. By isolating the analog front end from the digital processing side, the ADUM1201ARZ-RL7 improves overall system accuracy and reliability.
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Power Supply Control
In power supply control, the ADUM1201ARZ-RL7 isolates the control circuitry from the high-voltage power stage. Its 2500Vrms isolation protects the low-voltage controller from high-voltage transients. The 1Mbps data rate is sufficient for transmitting PWM signals and fault status. The high CMTI of 25kV/µs ensures reliable operation in the presence of fast-switching transients from the power stage. The device's low propagation delay (though not specified in the provided data) is critical for maintaining loop stability. The wide supply range (3.0V to 5.5V) allows interfacing with various controller logic levels. This isolator is commonly used in AC-DC and DC-DC converters.
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Motor Drives
The ADUM1201ARZ-RL7 is used in motor drives to isolate the gate driver signals from the microcontroller. Its 2500Vrms isolation protects the low-voltage control side from the high-voltage motor side. The 1Mbps data rate is sufficient for PWM signals up to 20kHz with reasonable resolution. The high CMTI of 25kV/µs is essential in motor drives where fast-switching IGBTs or MOSFETs generate high dv/dt transients. The device's wide temperature range (-40°C to +125°C) suits the harsh thermal environment of motor drives. By using iCoupler technology, it provides more reliable isolation than optocouplers, which can degrade over time.
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Communication Interfaces
The ADUM1201ARZ-RL7 is used in communication interfaces to isolate the transceiver from the controller. Its 2500Vrms isolation prevents ground potential differences from disrupting communication. The 1Mbps data rate is suitable for protocols like RS-485, CAN, and SPI. The device's 1/1 channel directionality is ideal for bidirectional communication links. The high CMTI ensures reliable data transmission in noisy environments. The low quiescent current is beneficial for power-sensitive communication nodes. By isolating the communication lines, the ADUM1201ARZ-RL7 improves system reliability and protects against voltage surges.
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推薦產品摘要
工程參考資料，適用於 ADUM1201ARZ-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 | ADUM1201ARZ | ADUM1201BRZ-RL7 | ADUM1201CRZ | ADUM1201WURZ |
|---|---|---|---|---|---|
| Package | 8-SOIC | 8-SOIC | 8-SOIC | 8-SOIC | 8-SOIC |
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| Data Rate | 1 Mbps | 1 Mbps | 10 Mbps | 25 Mbps | 1 Mbps |
| Isolation Voltage | 2500 Vrms | 2500 Vrms | 2500 Vrms | 2500 Vrms | 2500 Vrms |
| CMTI | 25 kV/µs | 25 kV/µs | 25 kV/µs | 25 kV/µs | 25 kV/µs |
| Channel Directionality | 1/1 | 1/1 | 1/1 | 1/1 | 1/1 |
| Automotive Grade | No | No | No | No | Yes (AEC-Q100) |
| Packaging | Tape & Reel | Tube | Tape & Reel | Tube | Tube |
主要差異化特點
- iCoupler technology vs optocouplers (對比Optocoupler-based isolators)
- 1/1 channel directionality (對比ADUM1200ARZ-RL7 (2/0))
- Low power consumption (對比Optocoupler-based isolators)
設計說明
Place 0.1µF bypass capacitors as close as possible to the VDD1 and VDD2 pins, with a low-impedance path to the respective ground pins. Additionally, a 10µF bulk capacitor on each supply is recommended if the power source is far from the device. This ensures stable operation and reduces noise coupling.
Maintain proper creepage and clearance distances across the isolation barrier. For 2500Vrms isolation, a minimum creepage of 4mm is recommended for basic isolation, but check the specific safety standard requirements for your application. Avoid routing any copper traces under the isolation barrier to preserve isolation integrity.
Do not exceed the absolute maximum ratings for supply voltage (7V) or input/output voltages. Ensure that the input signals do not exceed the supply voltage by more than 0.5V. Also, avoid floating unused inputs; tie them to a defined logic level to prevent oscillation and excessive current draw.
合規資訊
RoHS compliant per distributor data. Not AEC-Q100 qualified; use ADUM1201WURZ for automotive.
