ADUM1420ARWZ - Quad-Channel Digital Isolator | Analog Devices
MPN: ADUM1420ARWZ ✓ Hoạt độngADUM1420ARWZ Tóm tắt
Digital isolators are components that provide electrical isolation between two circuits while allowing digital signals to pass. They are essential in applications where ground potential differences, noise, or safety requirements demand galvanic isolation. The ADUM1420ARWZ uses iCoupler technology, which combines high-speed CMOS and monolithic air core transformers to achieve reliable isolation without the wear-out mechanisms of optocouplers. This makes it a preferred choice for high-reliability systems.
Key features include 4/0 channel directionality (all inputs on one side, all outputs on the other), 25kV/µs common-mode transient immunity (CMTI), and a wide operating temperature range of -40°C to +105°C. The device supports both 3V and 5V supplies, making it versatile for mixed-voltage systems. Its low power consumption is critical for power-sensitive designs.
The ADUM1420ARWZ is part of the ADuM140x family, which includes variants with different channel configurations and data rates. The 'A' grade indicates a 10 Mbps data rate, while 'B' and 'C' grades offer 25 Mbps and 90 Mbps respectively. The 'RWZ' suffix denotes the 16-lead SOIC package with a 7.50mm body width.
Typical applications include industrial fieldbus isolation, medical equipment isolation, isolated SPI/UART interfaces, and power supply control. The device is also suitable for automotive and aerospace systems where reliability and isolation are paramount.
When designing with the ADUM1420ARWZ, ensure proper PCB layout with adequate creepage and clearance distances for the required isolation rating. Bypass capacitors should be placed close to the VDD pins to minimize noise. The device does not require external components for isolation, simplifying design.
Bộ thay thế dễ dàng lắp đặt cho ADUM1420ARWZ — 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 ADUM1420ARWZ (cùng hình factor và footprint) — khác nhau ở Data Rate, Channel Directionality, Supply Voltage Range.
ADUM1400ARWZ
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →ADUM1400BRWZ
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
ADUM1400CRWZ
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
ADUM1401ARWZ
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →ADUM1402ARWZ
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
ADUM1420ARWZ Thông số kỹ thuật
| Number of Channels | 4 |
| Channel Directionality | 4/0 (all inputs on one side) |
| Isolation Voltage | 2500 Vrms |
| Tốc độ dữ liệu | 10 Mbps |
| Common-Mode Transient Immunity (CMTI) | 25 kV/µs |
| Supply Voltage Range | 3 V to 5.5 V |
| Supply Current (5V, 0-2 Mbps) | 1.0 mA per channel max |
| Supply Current (5V, 10 Mbps) | 3.5 mA per channel max |
| Supply Current (3V, 0-2 Mbps) | 0.7 mA per channel max |
| Khoảng nhiệt độ hoạt động | -40°C to +105°C |
| Hộp | 16-SOIC (0.295", 7.50mm Width) |
| Kiểu lắp đặt | Surface Mount |
| Trạng thái RoHS | Compliant |
Cấu hình chân ADUM1420ARWZ
| Chân 1 | VDD1 — Supply voltage for side 1 |
| Chân 2 | GND1 — Ground for side 1 |
| Chân 3 | VIA — Input channel A |
| Chân 4 | VIB — Input channel B |
| Chân 5 | VIC — Input channel C |
| Chân 6 | VID — Input channel D |
| Chân 7 | GND1 — Ground for side 1 |
| Chân 8 | NC — No connect |
| Chân 9 | NC — No connect |
| Chân 10 | GND2 — Ground for side 2 |
| Chân 11 | VOA — Output channel A |
| Chân 12 | VOB — Output channel B |
| Chân 13 | VOC — Output channel C |
| Chân 14 | VOD — Output channel D |
| Chân 15 | GND2 — Ground for side 2 |
| Chân 16 | VDD2 — Supply voltage for side 2 |
Ứng dụng tiêu biểu
ADUM1420ARWZ phù hợp cho 6 Áp dụngs: Industrial Fieldbus Isolation, Medical Equipment Isolation, Isolated SPI/UART Interfaces, Power Supply Control Isolation, Automotive Electronics Isolation, Communication Systems Isolation.
Industrial Fieldbus Isolation
The ADUM1420ARWZ provides galvanic isolation for industrial fieldbus interfaces such as RS-485, CAN, and Profibus. Its 2500Vrms isolation and 25kV/µs CMTI ensure reliable communication in noisy industrial environments. The 10 Mbps data rate supports common fieldbus speeds, and the 4/0 channel configuration allows isolation of data and control lines. Low power consumption (1.0 mA per channel at 5V) minimizes heat in sealed enclosures. The wide temperature range (-40°C to +105°C) suits harsh factory floors. Compared to optocouplers, iCoupler technology offers faster propagation delays and no LED aging, improving long-term reliability.
Được đề xuất
Medical Equipment Isolation
In medical devices, patient safety requires galvanic isolation between low-voltage control circuits and high-voltage sections. The ADUM1420ARWZ provides 2500Vrms isolation, meeting basic isolation requirements for many medical applications. Its low power consumption is beneficial for battery-powered portable devices. The 10 Mbps data rate is sufficient for sensor data and control signals. The device's small 16-SOIC package saves board space in compact designs. iCoupler technology ensures stable performance over time, unlike optocouplers that degrade with LED aging. The operating temperature range of -40°C to +105°C covers clinical environments.
Được đề xuất
Isolated SPI/UART Interfaces
The ADUM1420ARWZ is ideal for isolating SPI or UART interfaces between microcontrollers and peripherals. With 4 channels, it can isolate SCLK, MOSI, MISO, and SS lines in a single package. The 10 Mbps data rate supports typical SPI speeds up to 10 MHz. The 4/0 directionality is perfect for unidirectional data flows. Low propagation delay ensures minimal timing skew. The device operates from 3V to 5.5V, allowing interface with both 3.3V and 5V logic. Its high CMTI (25kV/µs) prevents data corruption in electrically noisy environments. This simplifies PCB design by eliminating the need for multiple optocouplers.
Được đề xuất
Power Supply Control Isolation
In power supply designs, the ADUM1420ARWZ isolates control signals between primary and secondary sides. Its 2500Vrms isolation rating is suitable for many AC-DC and DC-DC converters. The 10 Mbps data rate allows fast feedback loops. The device's low power consumption reduces overall supply losses. The 4/0 channel configuration can isolate PWM signals and fault indicators. High CMTI ensures stable operation during switching transients. The wide temperature range supports operation in power supplies with elevated ambient temperatures. iCoupler technology provides reliable isolation without the current transfer ratio degradation seen in optocouplers.
Được đề xuất
Automotive Electronics Isolation
The ADUM1420ARWZ is suitable for automotive applications requiring galvanic isolation, such as battery management systems, motor drives, and on-board chargers. Its 2500Vrms isolation meets automotive safety requirements for basic isolation. The operating temperature range of -40°C to +105°C covers under-hood environments. The 10 Mbps data rate supports CAN and LIN interfaces. High CMTI (25kV/µs) ensures reliable operation in the presence of electromagnetic interference from motors and ignition systems. The device's small package saves space in dense automotive PCBs. iCoupler technology offers superior reliability compared to optocouplers in vibration and temperature extremes.
Được đề xuất
Communication Systems Isolation
In communication systems, the ADUM1420ARWZ isolates digital interfaces between line cards and control planes. Its 2500Vrms isolation protects against ground loops and lightning surges. The 10 Mbps data rate is adequate for control and monitoring signals. The device's low power consumption is beneficial in high-density systems. The 4/0 channel configuration allows isolation of multiple signals in one package. High CMTI ensures data integrity in environments with high electromagnetic interference. The wide temperature range supports operation in telecom shelters. iCoupler technology provides consistent performance over time, reducing maintenance costs.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho ADUM1420ARWZ — 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 | ADUM1400ARWZ | ADUM1400BRWZ | ADUM1400CRWZ |
|---|---|---|---|---|
| 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 |
| Isolation Voltage | 2500 Vrms | 2500 Vrms | 2500 Vrms | 2500 Vrms |
| Data Rate | 10 Mbps | 10 Mbps | 25 Mbps | 90 Mbps |
| Channel Directionality | 4/0 | 4/0 | 4/0 | 4/0 |
| CMTI | 25 kV/µs | 25 kV/µs | 25 kV/µs | 25 kV/µs |
| Supply Voltage Range | 3 V to 5.5 V | 3 V to 5.5 V | 3 V to 5.5 V | 3 V to 5.5 V |
| Operating Temperature Range | -40°C to +105°C | -40°C to +105°C | -40°C to +105°C | -40°C to +105°C |
Bảo phân biệt quan trọng
- iCoupler technology eliminates LED aging (vsOptocoupler-based isolators)
- Higher data rate than standard optocouplers (vsOptocoupler-based isolators)
- Low power consumption (vsADUM1400BRWZ)
Ghi chú thiết kế
For optimal isolation performance, maintain at least 8mm creepage and clearance distance between the input and output sides of the ADUM1420ARWZ on the PCB. Place a 0.1µF bypass capacitor close to each VDD pin (VDD1 and VDD2) to ground. Use a solid ground plane under the device, but ensure the ground planes on each side are separated to preserve isolation. Avoid routing high-voltage traces near the isolation barrier.
The ADUM1420ARWZ consumes up to 3.5 mA per channel at 10 Mbps with 5V supply, totaling 14 mA for all channels. Ensure the power supply can handle this current. For 3V operation, current is lower (0.7 mA per channel at 0-2 Mbps). Use low-ESR capacitors to maintain stable supply voltage. If the input and output sides have different supply voltages, ensure both are within the 3V to 5.5V range.
Do not exceed the absolute maximum ratings, including isolation voltage (2500 Vrms) and supply voltage (5.5V). Ensure the input signals do not exceed the supply voltage. Avoid floating input pins; tie unused inputs to ground or supply. The device is not intended for safety isolation in medical applications requiring reinforced isolation; verify the isolation rating meets your safety standards.
Thông tin tuân thủ
RoHS compliant per distributor listings. No AEC-Q100 qualification indicated for this part.