ADUM3150BRSZ-RL7 - 6-Ch SPI Digital Isolator | Analog Devices
料号： ADUM3150BRSZ-RL7 ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $8.82 | $8.82 |
| 10 | $8.1 | $81.00 |
| 100 | $7.2 | $720.00 |
| 500 | $6.5 | $3,250.00 |
| 1,000 | $5.9 | $5,900.00 |
ADUM3150BRSZ-RL7 概述
A digital isolator is a component that provides electrical isolation between two circuits while allowing digital signals to pass through. It is essential in applications where ground potential differences, noise, or safety requirements demand isolation, such as in industrial automation, motor control, and medical equipment. Digital isolators replace optocouplers in many designs due to their higher speed, better reliability, and lower power consumption. The ADUM3150 is specifically designed for SPI buses, which are widely used in embedded systems to connect microcontrollers to sensors, ADCs, and other peripherals.
Key features of the ADUM3150BRSZ-RL7 include 6 isolation channels, a data rate of 40 Mbps (as listed by DigiKey), and a common-mode transient immunity (CMTI) of 25 kV/µs. The device operates over a wide supply voltage range and offers low propagation delay and jitter, making it suitable for high-speed SPI communication. The integrated delay clock feature allows for precise timing control, which is critical in multi-slave SPI systems.
Technically, the ADUM3150 uses iCoupler technology, which employs micro-transformers to transmit data across the isolation barrier. This approach provides superior performance compared to optocouplers, including higher data rates, lower power consumption, and better timing accuracy. The device also features a refresh mechanism to maintain output states in the absence of input transitions, ensuring reliable operation in static conditions.
Typical applications include isolated SPI interfaces in industrial PLCs, motor drives, solar inverters, and medical monitoring equipment. The high CMTI and isolation rating make it ideal for noisy industrial environments where voltage transients are common. The low propagation delay ensures minimal latency in real-time control loops.
When designing with the ADUM3150, it is important to ensure proper PCB layout to minimize coupling between the isolated sides. The datasheet recommends keeping the isolation barrier clear of copper and using appropriate creepage distances. Additionally, decoupling capacitors should be placed close to the power pins to maintain stable operation.
直接替换替代料： ADUM3150BRSZ-RL7 ——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： ADUM3150BRSZ-RL7 （相同外形与封装尺寸） ——差异在于 Technology, Data Rate, Number of Channels.
快速对比工具——选择替代料号进行并排对比：
ADUM3150BRSZ
✅ 直接替换✓ 有现货
$4.16 / 个
查看数据手册 →ADUM3151BRSZ-RL7
✅ 直接替换✓ 有现货
$7.45 / 个
查看数据手册 →ADUM3152BRSZ-RL7
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$4.16 / 个
查看数据手册 →ADUM3153BRSZ-RL7
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$3.1 / 个
查看数据手册 →ADUM3150BRSZ-RL7 规格参数
| Number of Channels | 6 |
| Isolation Voltage | 3750 Vrms |
| 数据速率 | 40 Mbps |
| CMTI | 25 kV/µs |
| Propagation Delay | 14 ns |
| Jitter | 1 ns |
| SPI Clock Rate | 17 MHz |
| 封装 | 20-SSOP (0.209", 5.30mm Width) |
| 安装类型 | Surface Mount |
| Technology | iCoupler |
| RoHS 状态 | Compliant |
| REACH Status | Compliant |
ADUM3150BRSZ-RL7 引脚配置
| 引脚 1 | VDD1 — Primary side supply voltage |
| 引脚 2 | GND1 — Primary side ground |
| 引脚 3 | SCLK — Serial clock input |
| 引脚 4 | MOSI — Master out slave in |
| 引脚 5 | MISO — Master in slave out |
| 引脚 6 | SS — Slave select |
| 引脚 7 | GND1 — Primary side ground |
| 引脚 8 | VDD1 — Primary side supply voltage |
| 引脚 9 | VDD2 — Secondary side supply voltage |
| 引脚 10 | GND2 — Secondary side ground |
| 引脚 11 | GND2 — Secondary side ground |
| 引脚 12 | VDD2 — Secondary side supply voltage |
| 引脚 13 | NC — No connect |
| 引脚 14 | NC — No connect |
| 引脚 15 | NC — No connect |
| 引脚 16 | NC — No connect |
| 引脚 17 | NC — No connect |
| 引脚 18 | NC — No connect |
| 引脚 19 | NC — No connect |
| 引脚 20 | NC — No connect |
典型应用
ADUM3150BRSZ-RL7 适用于 6 应用s: Industrial PLCs, Motor Drives, Solar Inverters, Medical Monitoring Equipment, Test and Measurement, Automotive Battery Management Systems.
Industrial PLCs
The ADUM3150BRSZ-RL7 provides isolated SPI communication between the PLC's main controller and remote I/O modules. Its 3750 Vrms isolation and 25 kV/µs CMTI protect against voltage transients and ground loops in industrial environments. The 17 MHz SPI clock rate ensures fast data transfer for real-time control, while the low propagation delay (14 ns) minimizes latency in critical feedback loops. The device's robust isolation helps meet safety standards such as IEC 61131-2.
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Motor Drives
In motor drives, the ADUM3150BRSZ-RL7 isolates the SPI interface between the microcontroller and gate driver or encoder. The high CMTI (25 kV/µs) ensures reliable operation in the presence of fast-switching voltage transients from the power stage. The 40 Mbps data rate supports high-resolution encoder feedback, and the 3750 Vrms isolation protects the low-voltage control circuitry from high-voltage bus transients. The device's low jitter (1 ns) ensures accurate timing for PWM synchronization.
推荐
Solar Inverters
The ADUM3150BRSZ-RL7 is used in solar inverters to isolate the SPI communication between the MPPT controller and the inverter's power stage. Its 3750 Vrms isolation provides safety isolation between the DC input and AC output, meeting IEC 62109 requirements. The high data rate (40 Mbps) enables fast communication for maximum power point tracking algorithms, while the low propagation delay (14 ns) ensures responsive control. The device's wide operating temperature range makes it suitable for outdoor installations.
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Medical Monitoring Equipment
In medical monitoring equipment, the ADUM3150BRSZ-RL7 provides isolation for SPI communication between the sensor front-end and the processing unit. The 3750 Vrms isolation ensures patient safety by preventing leakage currents, meeting IEC 60601-1 standards. The low propagation delay (14 ns) and jitter (1 ns) are critical for accurate real-time monitoring of vital signs. The device's small SSOP package saves board space in compact medical devices.
推荐
Test and Measurement
The ADUM3150BRSZ-RL7 is used in test and measurement equipment to isolate SPI communication between the main processor and high-voltage measurement circuits. Its 3750 Vrms isolation protects sensitive measurement electronics from high-voltage transients, while the 40 Mbps data rate supports high-speed data acquisition. The low propagation delay (14 ns) ensures accurate timing for synchronized measurements. The device's high CMTI (25 kV/µs) makes it suitable for environments with high electromagnetic interference.
推荐
Automotive Battery Management Systems
In automotive BMS, the ADUM3150BRSZ-RL7 isolates the SPI communication between the battery monitoring ICs and the main controller. The 3750 Vrms isolation provides safety isolation between the high-voltage battery pack and the low-voltage control electronics, meeting AEC-Q100 requirements. The high data rate (40 Mbps) enables fast cell voltage and temperature monitoring, while the low propagation delay (14 ns) ensures timely response to overcurrent or overvoltage conditions. The device's robust CMTI (25 kV/µs) ensures reliable operation in the noisy automotive environment.
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推荐产品汇总
工程参考数据： ADUM3150BRSZ-RL7 ——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 | ADUM3150BRSZ | ADUM3150ARSZ | ADUM3151BRSZ-RL7 | ADUM3152BRSZ-RL7 | ADUM3153BRSZ-RL7 | ISO7741DW |
|---|---|---|---|---|---|---|---|
| Package | 20-SSOP | 20-SSOP | 16-SOIC | 20-SSOP | 20-SSOP | 20-SSOP | 16-SOIC |
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Texas Instruments |
| Isolation Voltage | 3750 Vrms | 3750 Vrms | 2500 Vrms | 3750 Vrms | 3750 Vrms | 3750 Vrms | 5000 Vrms |
| Data Rate | 40 Mbps | 40 Mbps | 40 Mbps | 40 Mbps | 40 Mbps | 40 Mbps | 100 Mbps |
| CMTI | 25 kV/µs | 25 kV/µs | 25 kV/µs | 25 kV/µs | 25 kV/µs | 25 kV/µs | 100 kV/µs |
| Propagation Delay | 14 ns | 14 ns | 14 ns | 14 ns | 14 ns | 14 ns | 10.7 ns |
| Number of Channels | 6 | 6 | 6 | 6 | 6 | 6 | 4 |
| SPI Optimized | Yes | Yes | Yes | Yes | Yes | Yes | No |
关键差异点
- SPI-optimized isolation with delay clock （对比 ISO7741DW)
- Higher isolation voltage than ADUM3150ARSZ （对比 ADUM3150ARSZ)
- Tape and reel packaging for automated assembly （对比 ADUM3150BRSZ)
设计说明
Ensure proper PCB layout to maintain isolation barrier integrity. Keep the isolation barrier free of copper traces and components to avoid reducing creepage and clearance distances. Place decoupling capacitors (0.1 µF) close to VDD1 and VDD2 pins to minimize noise. Refer to the ADuM3150 datasheet for recommended layout guidelines.
The ADUM3150BRSZ-RL7 requires a stable power supply on both sides of the isolation barrier. Use low-ESR ceramic capacitors (e.g., 0.1 µF) on VDD1 and VDD2 to filter high-frequency noise. Ensure the supply voltage is within the recommended operating range to avoid malfunction. The device's power consumption is low, but verify the total current draw to size the supply appropriately.
Do not exceed the absolute maximum ratings for supply voltage or isolation voltage. Ensure that the SPI signals are properly terminated to avoid reflections at high data rates. Also, note that the ADUM3150BRSZ-RL7 has a refresh mechanism to maintain output states, but it is not recommended to leave inputs floating; tie unused inputs to a defined logic level.
合规信息
RoHS and REACH compliant per Analog Devices product page. Not AEC-Q100 qualified.