ایزولاتور ایزولاتور دیجیتال

Product Attributes

Introduction

The ADuM2400/ADuM2401/ADuM2402 are 4-channel digital isolators based on iCoupler technology. Combining high speed CMOS and monolithic air core transformer technology, these isolation components provide outstanding performance characteristics that are 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, nonlinear transfer functions, and temperature and lifetime effects are eliminated with the simple iCoupler digital interfaces and stable performance characteristics. Furthermore, iCoupler devices run at one-tenth to one-sixth the power of optocouplers at comparable signal data rates. The ADuM2400/ADuM2401/ADuM2402 isolators provide four independent isolation channels in a variety of channel configurations and data rates. The ADuM2400/ ADuM2401/ADuM2402 models operate with the supply voltage of either side ranging from 2.7 V to 5.5 V, providing compatibility with lower voltage systems as well as enabling a voltage translation functionality across the isolation barrier. In addition, the ADuM2400/ADuM2401/ADuM2402 provide low pulse width distortion (<2 ns for CRWZ grade) and tight channel-to-channel matching (≤2 ns for CRWZ grade). The ADuM2400/ ADuM2401/ADuM2402 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, 1.0 mA per channel maximum @ 0 Mbps to 2 Mbps, 3.5 mA per channel maximum @ 10 Mbps, 31 mA per channel maximum @ 90 Mbps; 3 V operation, 0.7 mA per channel maximum @ 0 Mbps to 2 Mbps, 2.1 mA per channel maximum @ 10 Mbps, 20 mA per channel maximum @ 90 Mbps
• Bidirectional communication
• 3 V/5 V level translation
• High temperature operation: 105°C
• High data rate: dc to 90 Mbps (NRZ)
• Precise timing characteristics: 2 ns maximum pulse width distortion, 2 ns maximum channel-to-channel matching
• High common-mode transient immunity: >25 kV/μs
• Output enable function
• 16-lead SOIC wide body package version (RW-16)
• 16-lead SOIC wide body enhanced creepage version (RI-16)
• Safety and regulatory approvals (RI-16 package): UL recognition: 5000 V rms for 1 minute per UL 1577; CSA Component Acceptance Notice 5A; 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, V10RM = 846 V peak

Applications

• General-purpose, high voltage, multichannel isolation
• Medical equipment
• Motor drives
• Power supplies