ایزولاتور ایزولاتور دیجیتال

Product Attributes

Introduction

The ADuM2250/ADuM2251 are hot swappable digital isolators with nonlatching, bidirectional communication channels that are compatible with I²C interfaces. This eliminates the need for splitting I²C signals into separate transmit and receive signals for use with standalone optocouplers. The ADuM2250 provides two bidirectional channels, supporting a complete isolated I²C interface. The ADuM2251 provides one bidirectional channel and one unidirectional channel for those applications where a bidirectional clock is not required. The ADuM2250/ADuM2251 contain hot swap circuitry to prevent data glitches when an unpowered card is inserted onto an active bus. These isolators are based on iCoupler chip scale transformer technology. iCoupler is a magnetic isolation technology with performance, size, power consumption, and functional advantages compared to optocouplers. The ADuM2250/ADuM2251 integrate iCoupler channels with semiconductor circuitry to enable a complete, isolated I²C interface in a small form factor package.

Features

• Bidirectional I2C communication
• Open-drain interfaces
• Suitable for hot swap applications
• 30 mA current sink capability
• 1000 kHz operation
• 3.0 V to 5.5 V supply/logic levels
• 16-lead SOIC wide body package version (RW-16)
• 16-lead SOIC wide body enhanced creepage version (RI-16-2)
• High temperature operation: 105°C
• Safety and regulatory approvals UL recognition: 5000 V rms for 1 minute per UL 1577 CSA Component Acceptance Notice 5A (RI-16-2 package) IEC 60601-1: 250 V rms (reinforced) IEC 60950-1: 400 V rms (reinforced) VDE certificate of conformity DIN V VDE V 0884-10 (VDE V 0884-10):2006-12 ≤849 V peak
• Qualified for automotive applications

Applications

• Isolated I2C, SMBus, or PMBus interfaces
• Multilevel I2C interfaces
• Power supplies
• Networking
• Power over Ethernet