ADUM3151BRSZ - 7-Ch SPI Digital Isolator | Analog Devices
MPN: ADUM3151BRSZ ✓ Hoạt độngADUM3151BRSZ Tóm tắt
A digital isolator is a component that provides electrical isolation between two circuits while allowing digital signals to pass across the isolation barrier. It is essential in applications where ground potential differences, noise, or safety requirements demand galvanic isolation. The ADUM3151BRSZ uses Analog Devices' iCoupler chip-scale transformer technology, which offers superior performance compared to optocouplers in terms of speed, power consumption, and reliability.
Key features include low propagation delay of 14 ns on the CLK, MO/SI, MI/SO, and SS channels, supporting SPI clock rates up to 17 MHz. The device also features a 7-channel configuration with three forward channels and four reverse channels, making it ideal for full-duplex SPI communication. The high CMTI of 25 kV/µs ensures reliable operation in noisy industrial environments.
The ADUM3151BRSZ is designed for isolated SPI interfaces in applications such as industrial automation, motor control, and data acquisition systems. Its low propagation delay and high data rate enable high-speed SPI communication across the isolation barrier without significant timing degradation. The device also includes an enable pin for power management and a thermal shutdown feature for protection.
When designing with the ADUM3151BRSZ, ensure proper PCB layout with adequate creepage and clearance distances for the isolation rating. The device requires a bypass capacitor on both supply pins to maintain signal integrity. The SSOP-20 package is suitable for space-constrained designs, and the device is RoHS compliant.
Bộ thay thế dễ dàng lắp đặt cho ADUM3151BRSZ — 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 ADUM3151BRSZ (cùng hình factor và footprint) — khác nhau ở Package, Technology, Propagation Delay, RoHS Status, Supply Voltage.
ADUM3152BRSZ
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| Number of Channels | 7 |
| Isolation Voltage | 3750 Vrms |
| Tốc độ dữ liệu | 34 Mbps |
| CMTI | 25 kV/µs |
| Propagation Delay | 14 ns |
| Điện áp cung cấp | 3 V to 5.5 V |
| Hộp | 20-SSOP (0.209", 5.30mm Width) |
| Nhiệt độ hoạt động | -40°C to +125°C |
| Technology | iCoupler |
| SPI Clock Rate | 17 MHz |
| Forward Channels | 3 |
| Reverse Channels | 4 |
| RoHS | Compliant |
| Kiểu lắp đặt | Surface Mount |
| Số lượng chân | 20 |
Cấu hình chân ADUM3151BRSZ
| Chân 1 | VDD1 — Supply voltage side 1 |
| Chân 2 | GND1 — Ground side 1 |
| Chân 3 | VOA — Output channel A |
| Chân 4 | VIA — Input channel A |
| Chân 5 | VOB — Output channel B |
| Chân 6 | VIB — Input channel B |
| Chân 7 | VOC — Output channel C |
| Chân 8 | VIC — Input channel C |
| Chân 9 | VOD — Output channel D |
| Chân 10 | VID — Input channel D |
| Chân 11 | GND2 — Ground side 2 |
| Chân 12 | VDD2 — Supply voltage side 2 |
| Chân 13 | VOE — Output channel E |
| Chân 14 | VIE — Input channel E |
| Chân 15 | VOF — Output channel F |
| Chân 16 | VIF — Input channel F |
| Chân 17 | VOG — Output channel G |
| Chân 18 | VIG — Input channel G |
| Chân 19 | EN — Enable pin |
| Chân 20 | NC — No connect |
Ứng dụng tiêu biểu
ADUM3151BRSZ phù hợp cho 6 Áp dụngs: Industrial Automation, Motor Control, Data Acquisition Systems, Medical Equipment, Renewable Energy Systems, Automotive Electronics.
Industrial Automation
The ADUM3151BRSZ provides isolated SPI communication in industrial automation systems, such as PLCs and motor drives. Its 3750 Vrms isolation and 25 kV/µs CMTI ensure reliable data transfer in noisy environments. The low propagation delay of 14 ns supports high-speed SPI, enabling real-time control of sensors and actuators. The device's wide temperature range (-40°C to +125°C) makes it suitable for harsh industrial conditions.
Được đề xuất
Motor Control
In motor control applications, the ADUM3151BRSZ isolates the microcontroller from the power stage, protecting low-voltage logic from high-voltage transients. The high CMTI of 25 kV/µs prevents false triggering during fast switching events. The device supports SPI communication for configuring motor drivers and reading encoder data. Its compact SSOP-20 package fits space-constrained designs, and the 3 V to 5.5 V supply range allows interfacing with various logic levels.
Được đề xuất
Data Acquisition Systems
The ADUM3151BRSZ is used in data acquisition systems to isolate the ADC from the host controller, preventing ground loops and noise. Its 34 Mbps data rate allows high-speed transfer of sampled data. The 7-channel configuration provides dedicated lines for SPI signals, ensuring synchronized communication. The device's low propagation delay minimizes timing errors, which is critical for accurate data capture. It operates over a wide temperature range, making it suitable for remote sensing applications.
Được đề xuất
Medical Equipment
The ADUM3151BRSZ provides galvanic isolation in medical devices, ensuring patient safety by isolating sensitive electronics from high-voltage sections. Its 3750 Vrms isolation rating meets safety standards for medical equipment. The low power consumption and high data rate make it suitable for portable monitoring devices. The device's small SSOP-20 package enables compact designs, and its wide temperature range ensures reliable operation in clinical environments.
Được đề xuất
Renewable Energy Systems
In solar inverters and wind turbines, the ADUM3151BRSZ isolates control electronics from high-voltage power stages. Its high CMTI ensures reliable communication in the presence of fast switching transients. The device supports SPI for monitoring and controlling power converters. The wide operating temperature range and robust isolation make it ideal for outdoor installations. The 3 V to 5.5 V supply range allows integration with low-power microcontrollers.
Được đề xuất
Automotive Electronics
The ADUM3151BRSZ is used in automotive systems for isolated SPI communication between ECUs and sensors. Its 3750 Vrms isolation protects low-voltage logic from high-voltage transients in hybrid and electric vehicles. The device's high data rate and low propagation delay enable real-time data exchange. It operates over a wide temperature range (-40°C to +125°C), suitable for under-hood applications. The compact SSOP-20 package fits space-constrained automotive PCBs.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho ADUM3151BRSZ — 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 | ADUM3151BRWZ | ADUM3152BRSZ | ADUM3153BRSZ | ISO7741DW | SI8642BB-B-IS1 |
|---|---|---|---|---|---|---|
| Package | 20-SSOP | 20-SOIC | 20-SSOP | 20-SSOP | 20-SOIC | 16-SOIC |
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Texas Instruments | Skyworks Solutions |
| Isolation Voltage | 3750 Vrms | 3750 Vrms | 3750 Vrms | 3750 Vrms | 5000 Vrms | 2500 Vrms |
| Data Rate | 34 Mbps | 34 Mbps | 34 Mbps | 34 Mbps | 100 Mbps | 150 Mbps |
| CMTI | 25 kV/µs | 25 kV/µs | 25 kV/µs | 25 kV/µs | 100 kV/µs | 35 kV/µs |
| Propagation Delay | 14 ns | 14 ns | 14 ns | 14 ns | 10 ns | 13 ns |
| Supply Voltage | 3 V to 5.5 V | 3 V to 5.5 V | 3 V to 5.5 V | 3 V to 5.5 V | 2.25 V to 5.5 V | 2.5 V to 5.5 V |
| Channel Configuration | 3 forward, 4 reverse | 3 forward, 4 reverse | 4 forward, 3 reverse | 5 forward, 2 reverse | 4 forward, 3 reverse | 4 forward, 2 reverse |
Bảo phân biệt quan trọng
- Optimized for SPI with 7 channels (vsISO7741DW)
- High CMTI of 25 kV/µs (vsSI8642BB-B-IS1)
- Low propagation delay of 14 ns (vsADUM3151BRWZ)
Ghi chú thiết kế
For the ADUM3151BRSZ, ensure proper PCB layout with adequate creepage and clearance distances for the 3750 Vrms isolation rating. Maintain at least 8 mm creepage between the two sides of the isolation barrier. Place bypass capacitors (0.1 µF) close to VDD1 and VDD2 pins to reduce noise. Use a solid ground plane under the device to minimize EMI.
The ADUM3151BRSZ requires a stable power supply on both sides of the isolation barrier. Use separate LDOs or isolated DC-DC converters to power VDD1 and VDD2. Ensure the supply voltage is within 3 V to 5.5 V. Decouple each supply pin with a 0.1 µF ceramic capacitor and a 10 µF bulk capacitor to handle transient currents.
Do not exceed the absolute maximum ratings, including the isolation voltage and supply voltage. Ensure the enable pin (EN) is properly driven to avoid unintended shutdown. When routing SPI signals, keep traces short and matched to minimize skew. Avoid routing high-speed signals near the isolation barrier to prevent coupling.
Thông tin tuân thủ
RoHS compliant per distributor data. AEC-Q100 qualification not specified.