ADUM4154ARIZ-RL - 5kV SPI Digital Isolator | Analog Devices
料号： ADUM4154ARIZ-RL ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $4.85 | $4.85 |
| 10 | $4.36 | $43.60 |
| 100 | $3.88 | $388.00 |
| 500 | $3.49 | $1,745.00 |
| 1,000 | $3.1 | $3,100.00 |
ADUM4154ARIZ-RL 概述
A digital isolator is a device that transfers digital signals across an isolation barrier, providing galvanic isolation to protect circuits and users from high voltages, ground loops, and noise. It is a key component in industrial automation, medical equipment, and communication systems where safety and signal integrity are critical. Digital isolators are part of the broader category of isolation components, which also include optocouplers and magnetic isolators.
Key features of the ADUM4154ARIZ-RL include support for SPI clock rates up to 17 MHz, low propagation delay and jitter, and the ability to route the slave select signal to one of four destinations using two low-speed address pins. The device operates over a wide temperature range of -40°C to +125°C and supports supply voltages of 4.5V to 5.5V on VDD1 and 3.0V to 3.6V on VDD2. It is RoHS compliant and lead-free.
The ADUM4154ARIZ-RL uses iCoupler technology, which employs chip-scale transformers to achieve isolation, offering advantages over optocouplers such as higher data rates, lower power consumption, and better reliability. The device is designed to meet stringent safety standards, making it suitable for applications requiring reinforced isolation.
Typical applications include SPI isolation in industrial fieldbus systems, isolated sensor interfaces, motor control, and medical monitoring equipment. The device's high CMTI ensures reliable operation in noisy environments, and its low propagation delay supports high-speed SPI communication.
When designing with this device, ensure proper PCB layout to maintain isolation spacing and minimize parasitic capacitance. Also, consider the power supply decoupling to ensure stable operation across the isolation barrier.
直接替换替代料： ADUM4154ARIZ-RL ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： ADUM4154ARIZ-RL （相同外形与封装尺寸） ——差异在于 Data Rate, Number of Channels, SPI Clock Rate.
快速对比工具——选择替代料号进行并排对比：
ADUM4154ARIZ
✅ 直接替换✓ 有现货
$3.1 / 个
查看数据手册 →ADUM4154BRIZ
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$4.16 / 个
查看数据手册 →ADUM4154ARIZ-RL 规格参数
| Isolation Voltage | 5000 Vrms |
| Number of Channels | 4 (SPI) + 2 (address) + 1 (SS) = 7 |
| 数据速率 | 2 Mbps |
| CMTI | 25 kV/µs |
| SPI Clock Rate | Up to 17 MHz |
| Supply Voltage VDD1 | 4.5 V to 5.5 V |
| Supply Voltage VDD2 | 3.0 V to 3.6 V |
| 工作温度 | -40°C to +125°C |
| 封装 | 20-SOIC (0.295", 7.50mm Width) |
| 安装类型 | Surface Mount |
| RoHS 状态 | Compliant |
| Lead-Free | Yes |
| Technology | iCoupler |
| Number of Slave Devices Supported | 4 |
ADUM4154ARIZ-RL 引脚配置
| 引脚 1 | VDD1 — Primary side supply voltage (4.5V to 5.5V) |
| 引脚 2 | GND1 — Primary side ground |
| 引脚 3 | SCLK — SPI clock input |
| 引脚 4 | MOSI — Master out slave in data |
| 引脚 5 | MISO — Master in slave out data |
| 引脚 6 | SS — Slave select input |
| 引脚 7 | ADDR0 — Address pin 0 for slave select routing |
| 引脚 8 | ADDR1 — Address pin 1 for slave select routing |
| 引脚 9 | GND1 — Primary side ground |
| 引脚 10 | NC — No connect |
| 引脚 11 | NC — No connect |
| 引脚 12 | GND2 — Secondary side ground |
| 引脚 13 | SS1 — Slave select output 1 |
| 引脚 14 | SS2 — Slave select output 2 |
| 引脚 15 | SS3 — Slave select output 3 |
| 引脚 16 | SS4 — Slave select output 4 |
| 引脚 17 | GND2 — Secondary side ground |
| 引脚 18 | VDD2 — Secondary side supply voltage (3.0V to 3.6V) |
| 引脚 19 | NC — No connect |
| 引脚 20 | NC — No connect |
典型应用
ADUM4154ARIZ-RL 适用于 6 应用s: Industrial Fieldbus Isolation, Isolated Sensor Interface, Motor Control, Medical Monitoring Equipment, Isolated Power Supply Control, Communication Systems.
Industrial Fieldbus Isolation
The ADUM4154ARIZ-RL provides galvanic isolation for SPI-based fieldbus interfaces in industrial automation. Its 5kV isolation and 25kV/µs CMTI ensure reliable communication in noisy environments with high voltage transients. The device supports SPI clock rates up to 17 MHz, enabling high-speed data transfer between a PLC and remote I/O modules. The low propagation delay and jitter maintain signal integrity over long cable runs, while the multiple slave support allows a single master to communicate with up to four isolated peripherals. This reduces component count and simplifies PCB layout compared to using multiple isolators.
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Isolated Sensor Interface
The ADUM4154ARIZ-RL is ideal for isolating SPI sensors such as temperature, pressure, and flow sensors from a central controller. Its 5kV isolation protects the controller from high voltages and ground loops, while the high CMTI ensures accurate data transmission in electrically noisy environments. The device supports up to four slave devices, allowing multiple sensors to share a single SPI bus with individual chip select lines. The wide operating temperature range of -40°C to +125°C makes it suitable for industrial and automotive sensing applications. The low propagation delay ensures real-time sensor data is available to the controller without significant latency.
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Motor Control
In motor control systems, the ADUM4154ARIZ-RL isolates the SPI communication between the microcontroller and gate driver or encoder. Its 5kV isolation protects the low-voltage control circuitry from high-voltage transients generated by the motor. The high CMTI of 25kV/µs ensures reliable operation in the presence of fast switching noise from the power stage. The device supports SPI clock rates up to 17 MHz, enabling high-speed communication for real-time control loops. The multiple slave support allows connection to multiple peripherals such as encoders and current sensors on a single isolated SPI bus.
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Medical Monitoring Equipment
The ADUM4154ARIZ-RL is used in medical devices to isolate patient-connected sensors from the main control unit, ensuring safety and preventing electrical shock. Its 5kV isolation meets stringent medical safety standards, while the high CMTI ensures reliable data transmission in the presence of interference from other medical equipment. The device supports SPI communication with multiple sensors, such as ECG, SpO2, and temperature probes, allowing a single isolator to handle multiple data streams. The wide operating temperature range and RoHS compliance make it suitable for medical devices that must meet environmental regulations.
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Isolated Power Supply Control
The ADUM4154ARIZ-RL can be used to isolate the SPI communication between a digital power controller and the power stage in isolated DC-DC converters. Its 5kV isolation provides safety isolation between the primary and secondary sides, while the high CMTI ensures reliable communication in the presence of switching noise. The device supports SPI clock rates up to 17 MHz, enabling fast control loops for precise voltage regulation. The multiple slave support allows connection to multiple power stages or monitoring ICs on a single isolated SPI bus, simplifying the design of complex power systems.
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Communication Systems
The ADUM4154ARIZ-RL is used in communication systems to isolate SPI interfaces between baseband processors and RF front-end modules. Its 5kV isolation prevents ground loops and reduces noise coupling, improving signal quality. The high CMTI of 25kV/µs ensures reliable operation in environments with high electromagnetic interference. The device supports SPI clock rates up to 17 MHz, enabling high-speed configuration and control of RF components. The multiple slave support allows a single processor to control multiple RF modules, such as PLLs, mixers, and amplifiers, through one isolated SPI bus.
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推荐产品汇总
工程参考数据： ADUM4154ARIZ-RL ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | ADUM4154ARIZ | ADUM4154BRIZ | ADUM3154ARSZ | ISO7742DW | SI8642BB-B-IS1 |
|---|---|---|---|---|---|---|
| Package | 20-SOIC | 20-SOIC | 20-SOIC | 20-SSOP | SOIC-16 | SOIC-16 |
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Texas Instruments | Skyworks Solutions |
| Isolation Voltage | 5000 Vrms | 5000 Vrms | 5000 Vrms | 2500 Vrms | 5000 Vrms | 5000 Vrms |
| Data Rate | 2 Mbps | 2 Mbps | 150 Mbps | 2 Mbps | 100 Mbps | 150 Mbps |
| CMTI | 25 kV/µs | 25 kV/µs | 25 kV/µs | 25 kV/µs | 100 kV/µs | 35 kV/µs |
| SPI Clock Rate | 17 MHz | 17 MHz | 17 MHz | 17 MHz | N/A (not SPI-specific) | N/A (not SPI-specific) |
| Number of Channels | 7 | 7 | 7 | 4 | 4 | 4 |
| Operating Temperature | -40°C to +125°C | -40°C to +125°C | -40°C to +125°C | -40°C to +125°C | -55°C to +125°C | -40°C to +125°C |
关键差异点
- SPI-specific isolation with multiple slave support （对比 ISO7742DW)
- Higher isolation voltage than ADUM3154ARSZ （对比 ADUM3154ARSZ)
- Lower data rate but lower power consumption （对比 ADUM4154BRIZ)
设计说明
Ensure proper PCB layout to maintain isolation spacing between primary and secondary sides. Follow the manufacturer's recommended creepage and clearance distances for 5kV isolation. Use a solid ground plane on each side and avoid routing high-voltage traces near the isolation barrier.
Decouple VDD1 and VDD2 with 0.1µF and 10µF capacitors placed close to the pins. This ensures stable operation and reduces noise coupling across the isolation barrier. Consider using a dedicated power supply for each side to minimize ground bounce.
Do not exceed the absolute maximum ratings for supply voltages and isolation voltage. Ensure that the voltage differential between GND1 and GND2 does not exceed the isolation rating. Also, verify that the SPI signals are properly terminated to avoid reflections at high clock rates.
合规信息
RoHS compliant and lead-free per Analog Devices product page. AEC-Q100 not applicable as this is not an automotive-grade part.
