ایزولاتور ایزولاتور دیجیتال

Product Attributes

Introduction

The ADuM1310/ADuM1311 are 3-channel digital isolators. Combining high speed CMOS and monolithic air core transformer technology, these isolation components provide outstanding performance characteristics superior to alternatives such as optocoupler devices. By avoiding the use of LEDs and photodiodes, iCoupler devices remove the design difficulties commonly associated with optocouplers. The typical optocoupler concerns regarding uncertain current transfer ratios, maximum operating temperature, and lifetime effects are eliminated with the simple iCoupler digital interfaces and stable performance characteristics. The need for external drivers and other discrete components is eliminated with these iCoupler products. Furthermore, iCoupler devices consume one-tenth to one-sixth the power of optocouplers at comparable signal data rates. The iCoupler also offers higher channel densities and more options for channel directionality. The ADuM1310/ADuM1311 isolators provide three independent isolation channels in a variety of channel configurations and data rates up to 10 Mbps. All models operate with the supply voltage on either side ranging from 2.7 V to 5.5 V, providing compatibility with lower voltage systems as well as enabling voltage translation functionality across the isolation barrier. All products allow the user to predetermine the default output state in the absence of input VDD1 power with a simple control pin. Unlike other optocoupler alternatives, the ADuM1310/ADuM1311 isolators have a patented refresh feature that ensures dc correctness in the absence of input logic transitions and during power-up/power-down conditions.

Features

• Low power operation
• 5 V operation
  • 1.7 mA per channel maximum at 0 Mbps to 2 Mbps
  • 4.0 mA per channel maximum at 2 Mbps to 10 Mbps
• 3 V operation
  • 1.0 mA per channel maximum at 0 Mbps to 2 Mbps
  • 2.1 mA per channel maximum at 2 Mbps to 10 Mbps
• Bidirectional communication
• 3 V/5 V level translation
• Schmitt trigger inputs
• High temperature operation: 105°C
• Up to 10 Mbps data rate (NRZ)
• Programmable default output state
• High common-mode transient immunity: >25 kV/μs
• 16-lead, RoHS-compliant, SOIC wide body package 8.1 mm external creepage
• Safety and regulatory approvals
  • UL recognition: 3750 V rms for 1 minute per UL 1577
  • CSA Component Acceptance Notice 5A
  • VDE certificate of conformity DIN V VDE V 0884-10 (VDE V 0884-10): 2006-12 ViORM = 560 V peak working voltage

Applications

• General-purpose multichannel isolation
• SPI interface/data converter isolation
• RS-232/RS-422/RS-485 transceiver
• Industrial field bus isolation