ADUM3154BRSZ-RL7 - SPI Digital Isolator 3750Vrms | Analog Devices
MPN： ADUM3154BRSZ-RL7 ✓ 啟用中ADUM3154BRSZ-RL7 概覽
A digital isolator is a component that provides galvanic isolation between two circuits while allowing digital signals to pass across the isolation barrier. It is used to protect sensitive electronics from high voltages, ground loops, and noise, and is essential in industrial, medical, and communication systems where safety and signal integrity are critical. Digital isolators are part of the broader category of isolation components, which also includes optocouplers and magnetic isolators.
Key features of the ADUM3154BRSZ-RL7 include a 3750Vrms isolation rating, 4 forward channels and 3 reverse channels, a data rate of 34 Mbps, and a common-mode transient immunity (CMTI) of 25 kV/µs. The device operates with a supply voltage range of 3.0V to 3.6V on VDD1 and 4.5V to 5.5V on VDD2, ensuring compatibility with standard logic levels. The low propagation delay and jitter make it ideal for high-speed SPI communication.
The ADUM3154BRSZ-RL7 uses iCoupler technology, which employs chip-scale transformers to transmit data across the isolation barrier. This technology offers advantages over optocouplers, including higher data rates, lower power consumption, and better reliability. The device also features a multiple-slave SPI configuration, allowing it to interface with up to four SPI slave devices without additional components.
Typical applications include isolated SPI interfaces in industrial automation, motor control, data acquisition systems, and medical equipment. The device is also suitable for use in communication systems where galvanic isolation is required to protect against voltage transients and ground potential differences.
When designing with this device, it is important to ensure proper PCB layout to minimize coupling across the isolation barrier. The datasheet recommends that any coupling that occurs should affect all pins equally on a given component side to prevent voltage differentials that could exceed absolute maximum ratings.
直接替換替代品，適用於 ADUM3154BRSZ-RL7 — 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： ADUM3154BRSZ-RL7 （相同外形與佔位） — 差異在於 Technology, Number of Channels, Isolation Voltage, Package, RoHS Status.
ADUM3154BRSZ
✅ 直接替換聯絡詢價
查看資料表 →ADUM3153BRSZ-RL7
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →ADUM3151BRSZ-RL7
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →ADUM3154ARIZ
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
ADUM3154BRIZ
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
ADUM3154BRSZ-RL7
✅ 直接替換聯絡詢價
查看資料表 →ADUM3154BRSZ-RL7 規格
| Isolation Voltage | 3750 Vrms |
| Number of Channels | 7 (4 forward, 3 reverse) |
| 資料速率 | 34 Mbps |
| Common-Mode Transient Immunity (CMTI) | 25 kV/µs |
| SPI Clock Rate | 17 MHz |
| Supply Voltage VDD1 | 3.0 V to 3.6 V |
| Supply Voltage VDD2 | 4.5 V to 5.5 V |
| 工作溫度範圍 | -40°C to +125°C |
| 封裝 | 20-SSOP (0.209", 5.30mm Width) |
| 安裝類型 | Surface Mount |
| Technology | iCoupler |
| Number of Slave Devices Supported | 4 |
| RoHS 狀態 | Compliant |
ADUM3154BRSZ-RL7 腳位配置
| 腳位 1 | VDD1 — Primary supply voltage (3.0V to 3.6V) |
| 腳位 2 | GND1 — Primary ground |
| 腳位 3 | CLK — SPI clock input |
| 腳位 4 | MO/SI — Master out, slave in data |
| 腳位 5 | MI/SO — Master in, slave out data |
| 腳位 6 | SS1 — Slave select 1 |
| 腳位 7 | SS2 — Slave select 2 |
| 腳位 8 | SS3 — Slave select 3 |
| 腳位 9 | SS4 — Slave select 4 |
| 腳位 10 | GND1 — Primary ground |
| 腳位 11 | VDD2 — Secondary supply voltage (4.5V to 5.5V) |
| 腳位 12 | GND2 — Secondary ground |
| 腳位 13 | CLK_ISO — Isolated SPI clock output |
| 腳位 14 | MO/SI_ISO — Isolated master out, slave in data |
| 腳位 15 | MI/SO_ISO — Isolated master in, slave out data |
| 腳位 16 | SS1_ISO — Isolated slave select 1 |
| 腳位 17 | SS2_ISO — Isolated slave select 2 |
| 腳位 18 | SS3_ISO — Isolated slave select 3 |
| 腳位 19 | SS4_ISO — Isolated slave select 4 |
| 腳位 20 | GND2 — Secondary ground |
典型應用
ADUM3154BRSZ-RL7 適用於 6 應用s: Industrial Automation, Motor Control, Data Acquisition Systems, Medical Equipment, Communication Systems, Test and Measurement.
Industrial Automation
The ADUM3154BRSZ-RL7 provides galvanic isolation for SPI communication between PLCs, sensors, and actuators. Its 3750Vrms isolation and 25kV/µs CMTI ensure reliable operation in noisy industrial environments. The 17MHz SPI clock rate supports high-speed data transfer for real-time control, while the multiple-slave capability allows connection of up to four SPI devices, reducing component count and simplifying design.
推薦
Motor Control
In motor control systems, the ADUM3154BRSZ-RL7 isolates the microcontroller from the power stage, protecting against high-voltage transients and ground loops. The low propagation delay and jitter ensure accurate timing for PWM signals, while the 34Mbps data rate allows fast communication with encoder interfaces. The wide operating temperature range (-40°C to +125°C) makes it suitable for harsh motor environments.
推薦
Data Acquisition Systems
The ADUM3154BRSZ-RL7 is ideal for isolating SPI buses in data acquisition systems, where it prevents ground loops and noise from corrupting analog measurements. Its 3750Vrms isolation protects sensitive ADCs from high common-mode voltages. The support for up to four SPI slaves allows multiple sensors to be connected through a single isolator, simplifying PCB layout and reducing cost.
推薦
Medical Equipment
In medical devices, patient safety requires galvanic isolation between the patient-connected circuitry and the main control unit. The ADUM3154BRSZ-RL7 provides 3750Vrms isolation, meeting safety standards for medical equipment. Its low power consumption and high reliability make it suitable for battery-powered devices. The multiple-slave SPI support enables connection of various sensors and actuators while maintaining isolation.
推薦
Communication Systems
The ADUM3154BRSZ-RL7 is used in communication systems to isolate SPI interfaces between baseband processors and RF front-ends, preventing ground loops and reducing noise. Its high CMTI (25kV/µs) ensures reliable operation in environments with high electromagnetic interference. The 17MHz SPI clock rate supports high-speed configuration of RF transceivers, while the compact SSOP package saves board space.
推薦
Test and Measurement
In test and measurement equipment, the ADUM3154BRSZ-RL7 isolates the measurement circuitry from the host controller, ensuring accurate readings by eliminating ground noise. Its 3750Vrms isolation protects sensitive inputs from high voltages. The low jitter and propagation delay are critical for maintaining signal integrity in high-speed SPI communication, making it ideal for oscilloscopes, data loggers, and spectrum analyzers.
推薦
推薦產品摘要
工程參考資料，適用於 ADUM3154BRSZ-RL7 — 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 | ADUM3154BRSZ | ADUM3153BRSZ-RL7 | ADUM3151BRSZ-RL7 |
|---|---|---|---|---|
| Package | 20-SSOP | 20-SSOP | 20-SSOP | 20-SSOP |
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| Isolation Voltage | 3750 Vrms | 3750 Vrms | 3750 Vrms | 3750 Vrms |
| Number of Channels | 7 (4 forward, 3 reverse) | 7 (4 forward, 3 reverse) | 6 (3 forward, 3 reverse) | 4 (2 forward, 2 reverse) |
| Data Rate | 34 Mbps | 34 Mbps | 34 Mbps | 34 Mbps |
| CMTI | 25 kV/µs | 25 kV/µs | 25 kV/µs | 25 kV/µs |
| SPI Clock Rate | 17 MHz | 17 MHz | 17 MHz | 17 MHz |
| Supply Voltage VDD1 | 3.0V to 3.6V | 3.0V to 3.6V | 3.0V to 3.6V | 3.0V to 3.6V |
主要差異化特點
- Supports up to four SPI slave devices (對比ADUM3153BRSZ-RL7)
- Higher isolation voltage than ADUM3154ARIZ (對比ADUM3154ARIZ)
- Tape and reel packaging for automated assembly (對比ADUM3154BRSZ)
設計說明
Ensure proper PCB layout to minimize coupling across the isolation barrier. The datasheet recommends that any coupling that occurs should affect all pins equally on a given component side to prevent voltage differentials that could exceed absolute maximum ratings. Use a solid ground plane under the device and keep the isolation barrier clear of copper traces.
Decouple both VDD1 and VDD2 with 0.1µF ceramic capacitors placed as close to the pins as possible. Additionally, use a 10µF bulk capacitor on each supply rail to handle transient currents. The device operates with VDD1 from 3.0V to 3.6V and VDD2 from 4.5V to 5.5V, so ensure stable supplies within these ranges.
Do not exceed the absolute maximum ratings for input voltages or output currents. The device is designed for SPI communication, so ensure that the SPI signals are properly terminated and that the clock rate does not exceed 17 MHz. Also, verify that the isolation rating is sufficient for your application's safety requirements.
合規資訊
RoHS compliance indicated on Veswin Electronics product page. Other compliance information not specified in provided data.