ADUM1201BRZ - 2-Ch Digital Isolator 10Mbps | Analog Devices
MPN： ADUM1201BRZ ✓ 啟用中ADUM1201BRZ 概覽
A digital isolator is a component that provides electrical isolation between two circuits while allowing digital signals to pass across the isolation barrier. Unlike optocouplers, which use LEDs and photodiodes, iCoupler devices use monolithic transformers and high-speed CMOS, eliminating concerns about current transfer ratio (CTR) degradation, nonlinear transfer functions, and temperature/lifetime effects. This results in more stable performance and lower power consumption—iCoupler devices consume about one-tenth the power of comparable optocouplers.
Key features of the ADUM1201BRZ include a bidirectional channel configuration (1/1 directionality), a maximum data rate of 10Mbps, and a CMTI of 25kV/µs, which ensures reliable operation in noisy industrial environments. The device also offers a wide operating temperature range of -40°C to +105°C, making it suitable for harsh applications. The SOIC-8 package is industry-standard, enabling easy PCB layout and drop-in replacement in many designs.
Technically, the ADUM1201BRZ uses a 2.7V to 5.5V supply range on both VDD1 and VDD2, with a maximum quiescent current of 2.6mA per channel. The propagation delay is typically 50ns, and the pulse width distortion is 3ns, ensuring accurate signal transmission. The device is certified to UL1577, IEC 60747-5-5, and CSA standards, providing robust isolation ratings.
Typical applications include industrial fieldbus isolation, motor drives, battery monitoring, hybrid electric vehicles, and digital isolation in power supplies. The ADUM1201BRZ is particularly well-suited for isolating SPI, UART, and other serial interfaces where high-speed data transfer and reliable isolation are required.
When designing with this device, ensure that the bypass capacitors (0.1µF) are placed close to the VDD pins to minimize noise. Also, consider the maximum data rate and CMTI requirements of your application to ensure the device meets your performance needs.
直接替換替代品，適用於 ADUM1201BRZ — 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： ADUM1201BRZ （相同外形與佔位） — 差異在於 Channel Directionality, Common-Mode Transient Immunity (CMTI), Isolation Voltage, Operating Temperature Range, Propagation Delay.
ADUM1201ARZ
✅ 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）
ADUM1201WTRZ
✅ 直接替換📋 參考替代品（不在目錄中）
ISO7721D
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
ISO7721DR
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
SI8621BB-B-ISR
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
ADUM1201BRZ 規格
| Number of Channels | 2 |
| Channel Directionality | 1/1 (bidirectional) |
| Isolation Voltage | 2500 Vrms |
| 資料速率 | 10 Mbps |
| Common-Mode Transient Immunity (CMTI) | 25 kV/µs |
| Supply Voltage (VDD1/VDD2) | 2.7 V to 5.5 V |
| Propagation Delay | 50 ns (typical) |
| Pulse Width Distortion | 3 ns (typical) |
| Quiescent Current (per channel) | 2.6 mA (maximum) |
| 工作溫度範圍 | -40°C to +105°C |
| 封裝 | 8-SOIC (0.154", 3.90mm width) |
| 安裝類型 | Surface Mount |
| Certifications | UL1577, IEC 60747-5-5, CSA |
| RoHS 狀態 | Compliant |
| MSL 等級 | 1 (unlimited) |
ADUM1201BRZ 腳位配置
| 腳位 1 | VDD1 — Supply voltage for side 1 (2.7V to 5.5V) |
| 腳位 2 | GND1 — Ground for side 1 |
| 腳位 3 | VOA — Output of channel A (side 1) |
| 腳位 4 | VIA — Input of channel A (side 1) |
| 腳位 5 | VIB — Input of channel B (side 2) |
| 腳位 6 | VOB — Output of channel B (side 2) |
| 腳位 7 | GND2 — Ground for side 2 |
| 腳位 8 | VDD2 — Supply voltage for side 2 (2.7V to 5.5V) |
典型應用
ADUM1201BRZ 適用於 6 應用s: Industrial Fieldbus Isolation, Motor Drive Isolation, Battery Monitoring, Hybrid Electric Vehicles (HEV), Digital Fieldbus Isolation, Power Supply Isolation.
Industrial Fieldbus Isolation
The ADUM1201BRZ provides galvanic isolation for fieldbus interfaces such as RS-485 and CAN. Its 10Mbps data rate supports high-speed communication, while the 2500Vrms isolation protects against ground loops and voltage transients. The high CMTI of 25kV/µs ensures reliable operation in electrically noisy industrial environments, making it ideal for PLCs, motor drives, and factory automation systems.
推薦
Motor Drive Isolation
In motor drives, the ADUM1201BRZ isolates control signals from the high-voltage power stage. Its 25kV/µs CMTI prevents false triggering due to fast switching transients, and the 10Mbps data rate handles PWM signals with minimal delay. The wide supply range (2.7V to 5.5V) allows interfacing with both 3.3V microcontrollers and 5V gate drivers, simplifying the design.
推薦
Battery Monitoring
The ADUM1201BRZ is used in battery management systems (BMS) to isolate the cell monitoring circuitry from the main controller. Its low power consumption and high data rate enable efficient communication of voltage and temperature data. The 2500Vrms isolation protects the low-voltage control side from high-voltage battery stacks, ensuring safety and reliability in electric vehicles and energy storage systems.
推薦
Hybrid Electric Vehicles (HEV)
In HEVs, the ADUM1201BRZ isolates communication between the battery management system, motor controller, and other high-voltage components. Its automotive temperature range (-40°C to +105°C) and robust isolation make it suitable for under-hood environments. The device's high CMTI ensures reliable operation in the presence of electromagnetic interference from traction motors and inverters.
推薦
Digital Fieldbus Isolation
The ADUM1201BRZ is ideal for isolating digital fieldbus protocols like PROFIBUS and Modbus. Its 10Mbps data rate supports high-speed communication, and the bidirectional channel configuration allows for both transmit and receive signals in a single device. The SOIC-8 package is compact, saving board space in space-constrained fieldbus nodes.
推薦
Power Supply Isolation
The ADUM1201BRZ provides isolation for feedback and control signals in switch-mode power supplies. Its high CMTI prevents noise from the switching node from corrupting the control signal, and the low propagation delay ensures stable regulation. The device's wide supply range allows it to interface with both primary and secondary side controllers.
推薦
推薦產品摘要
工程參考資料，適用於 ADUM1201BRZ — 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 | ADUM1201CRZ | ISO7721D |
|---|---|---|---|---|
| Package | 8-SOIC | 8-SOIC | 8-SOIC | 8-SOIC |
| Brand | Analog Devices | Analog Devices | Analog Devices | Texas Instruments |
| Isolation Voltage | 2500 Vrms | 2500 Vrms | 2500 Vrms | 2500 Vrms |
| Data Rate | 10 Mbps | 1 Mbps | 100 Mbps | 100 Mbps |
| CMTI | 25 kV/µs | 25 kV/µs | 25 kV/µs | 100 kV/µs |
| Supply Voltage Range | 2.7V to 5.5V | 2.7V to 5.5V | 2.7V to 5.5V | 2.25V to 5.5V |
| Propagation Delay | 50 ns | 100 ns | 32 ns | 16 ns |
| Automotive Grade | No | No | No | No |
主要差異化特點
- iCoupler technology eliminates optocoupler CTR degradation (對比Optocoupler-based isolators)
- Higher data rate than ADUM1201ARZ (對比ADUM1201ARZ)
- Lower power consumption than optocouplers (對比Optocoupler-based isolators)
設計說明
Place 0.1µF bypass capacitors close to VDD1 and VDD2 pins to minimize noise. Use a solid ground plane under the device to reduce EMI. Ensure adequate creepage distance between the two sides of the isolator on the PCB to maintain the isolation rating.
Keep the isolation barrier clear of copper traces and components to maintain the specified isolation voltage. Route high-voltage traces away from the low-voltage side to prevent arcing. Follow the recommended PCB layout in the datasheet for optimal performance.
Do not exceed the absolute maximum ratings for supply voltage or input/output currents. Ensure that the input signals do not exceed the supply voltage range. Also, verify that the data rate and CMTI requirements of your application are within the device's specifications to avoid signal integrity issues.
合規資訊
RoHS compliant per Analog Devices product page. Not AEC-Q100 qualified; use ADUM1201WTRZ for automotive.
