Analog Devices Inc. ADuM25x/ADuM26x数字隔离器
Analog Devices ADuM25x/ADuM26x数字隔离器为5通道和6通道数字隔离器，最大传播延迟为13ns，在5V工作电压时脉冲宽度失真小于4.5ns。 该隔离器具有100kV/µs共模瞬态抑制和最大4ns的严格通道匹配。 ADuM25x/ADuM26x的数据通道是相互独立的，可以进行不同配置。 这些数据通道可确保150Mbps的数据传输速率（最大值），并能耐受5kVrms的额定电压。 ADuM25x/ADuM26x数字隔离器可在1.7V至5.5V电源电压的任一侧工作。这种可在电源电压任一侧工作的能力不仅能够跨越隔离栅实现电压转换功能，还能与低压系统兼容。 基于iCoupler®技术，ADuM25x/ADuM26x数字隔离器可确保不存在输入逻辑转换时的直流正确性。 此外，这些隔离器具有两个不同的故障安全选项。 在未提供输入电源或者输入被禁用时，这些故障安全选项可使输出转换为预定的状态。
The ADuM25x/ADuM26x data channels are independent and available in a variety of configurations. The data channels have a guaranteed data rate of 150Mbps maximum and 5kVrms withstand voltage rating.
Analog Devices ADuM25x/ADuM26x Digital Isolators operate on either side of a supply voltage ranging from 1.7V to 5.5V. The capability to operate on either side of the supply voltage enables voltage translation functionality across the isolation barrier and compatibility with lower voltage systems.
Based on iCoupler® technology, the ADuM25x/ADuM26x Digital Isolators ensure DC correctness in the absence of input logic transitions. Additionally, the isolators feature two different fail-safe options. The fail-safe options allow the outputs to transition to a predetermined state when the input power supply is not applied or the inputs are disabled.
特性
- 100kV/μs common-mode transient immunity
- High robustness to radiated and conducted noise
- Low propagation delay13ns maximum for 5V operation
- 15ns maximum for 1.8V operation
- 150Mbps maximum guaranteed data rate
- Low dynamic power consumption
- 1.8V to 5V level translation
- +125°C temperature operation
- Fail-safe high or low options
- 16-lead, RoHS compliant, wide-body SOIC_IC package
- Safety and regulatory approvals (pending)UL recognition:
- 5000VRMS for 1 minute per UL 1577
- CSA Component Acceptance Notice 5A
- VDE certificate of conformity:
- DIN V VDE V 0884-10 (VDE V0884-10):2006-12
- VIORM = 849V peak
- CQC certification per GB4943.1-2011
应用
- General-purpose multi-channel isolation
- Serial peripheral interface (SPI)/data converter isolation
- Industrial field bus isolation
Functional Block Diagrams
