Analog Devices Inc. ADuM3154 SPIsolator 数字隔离器
亚德诺半导体 ADuM3154 是 3.75kV rms, 7 通道, SPIsolator™ 数字隔离器，适用于串行外设接口(SPI)。基于 亚德诺半导体 公司 iCoupler® 芯片级变压器技术，在 CLK、MO/SI、MI/SO 和 SS 通道中具有低传播延迟和抖动特性，可支持最高达 17MHz 的 SPI 时钟速率。ADuM3154 隔离器还提供从机选择多路复用系统，一个隔离器最多可支持 4 个从器件。 从机选择系统以全全输速度传输到所需输出，可实现严格的时序控制。 隔离式 SS 多路复用器通过 250kbps 低速双端口进行寻址，建立时间为 2.5μs。这种设计使 ADuM3154 数字隔离器成为工业可编程逻辑控制器（PLC）和传感器隔离应用的理想选择。
ADuM3154 also provides a slave select multiplexing system that allows up to four slave devices to be serviced from one isolator. The slave select system propagates to the desired output with full propagation speed, allowing tight timing control. The isolated SS multiplexer is addressed through a 250kbps low-speed dual port with 2.5μs of setup time. The design makes the ADuM3154 digital isolators ideal for industrial programmable logic controllers (PLCs) and sensor isolation applications.
特性
- Supports up to 17MHz SPI clock speed
- Four high-speed, low propagation delay, SPI signal isolation channels
- Supports up to 4 slave devices
- 20-lead SSOP package with 5mm creepage
- +125°C High temperature operation
- >25kV/μs High common-mode transient immunity
应用
- Industrial programmable logic controllers (PLCs)
- Sensor Isolation
Functional Block Diagram
发布日期: 2014-10-16
| 更新日期: 2022-03-11