ADUM4154ARIZ-RL - 5kV SPI Digital Isolator | Analog Devices
MPN: ADUM4154ARIZ-RL ✓ Hoạt độngADUM4154ARIZ-RL Tóm tắt
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.
Bộ thay thế dễ dàng lắp đặt cho ADUM4154ARIZ-RL — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với ADUM4154ARIZ-RL (cùng hình factor và footprint) — khác nhau ở Data Rate, Number of Channels, SPI Clock Rate.
ADUM4154ARIZ
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →ADUM4154BRIZ
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →ADUM4154ARIZ-RL Thông số kỹ thuật
| Isolation Voltage | 5000 Vrms |
| Number of Channels | 4 (SPI) + 2 (address) + 1 (SS) = 7 |
| Tốc độ dữ liệu | 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 |
| Nhiệt độ hoạt động | -40°C to +125°C |
| Hộp | 20-SOIC (0.295", 7.50mm Width) |
| Kiểu lắp đặt | Surface Mount |
| Trạng thái RoHS | Compliant |
| Lead-Free | Yes |
| Technology | iCoupler |
| Number of Slave Devices Supported | 4 |
Cấu hình chân ADUM4154ARIZ-RL
| Chân 1 | VDD1 — Primary side supply voltage (4.5V to 5.5V) |
| Chân 2 | GND1 — Primary side ground |
| Chân 3 | SCLK — SPI clock input |
| Chân 4 | MOSI — Master out slave in data |
| Chân 5 | MISO — Master in slave out data |
| Chân 6 | SS — Slave select input |
| Chân 7 | ADDR0 — Address pin 0 for slave select routing |
| Chân 8 | ADDR1 — Address pin 1 for slave select routing |
| Chân 9 | GND1 — Primary side ground |
| Chân 10 | NC — No connect |
| Chân 11 | NC — No connect |
| Chân 12 | GND2 — Secondary side ground |
| Chân 13 | SS1 — Slave select output 1 |
| Chân 14 | SS2 — Slave select output 2 |
| Chân 15 | SS3 — Slave select output 3 |
| Chân 16 | SS4 — Slave select output 4 |
| Chân 17 | GND2 — Secondary side ground |
| Chân 18 | VDD2 — Secondary side supply voltage (3.0V to 3.6V) |
| Chân 19 | NC — No connect |
| Chân 20 | NC — No connect |
Ứng dụng tiêu biểu
ADUM4154ARIZ-RL phù hợp cho 6 Áp dụngs: 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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho ADUM4154ARIZ-RL — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | 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 |
Bảo phân biệt quan trọng
- SPI-specific isolation with multiple slave support (vsISO7742DW)
- Higher isolation voltage than ADUM3154ARSZ (vsADUM3154ARSZ)
- Lower data rate but lower power consumption (vsADUM4154BRIZ)
Ghi chú thiết kế
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.
Thông tin tuân thủ
RoHS compliant and lead-free per Analog Devices product page. AEC-Q100 not applicable as this is not an automotive-grade part.
