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Product Attributes

Introduction

The ADuM250N/ADuM251N/ADuM252N are 5-channel digital isolators based on iCoupler technology. Combining high speed, complementary metal-oxide semiconductor (CMOS) and monolithic air core transformer technology, these isolation components provide outstanding performance characteristics superior to alternatives such as optocoupler devices and other integrated couplers. The maximum propagation delay is 13 ns with a pulse width distortion of less than 4.5 ns at 5 V operation. Channel to channel matching of propagation delay is tight at 4.0 ns maximum. The ADuM250N/ADuM251N/ADuM252N data channels are independent and are available in a variety of configurations with a withstand voltage rating of 5.0 kV rms. The devices operate with the supply voltage on either side ranging from 1.7 V to 5.5 V, providing compatibility with lower voltage systems as well as enabling voltage translation functionality across the isolation barrier. Unlike other optocoupler alternatives, dc correctness is ensured in the absence of input logic transitions. Two different fail-safe options are available by which the outputs transition to a predetermined state when the input power supply is not applied.

Features

• High common-mode transient immunity: 100 kV/μs
• High robustness to radiated and conducted noise
• Low propagation delay: 13 ns maximum for 5 V operation, 15 ns maximum for 1.8 V operation
• 150 Mbps maximum guaranteed data rate
• Safety and regulatory approvals (pending): UL recognition: 5000 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, ≤849 V peak; CQC certification per GB4943.1-2011
• Low dynamic power consumption
• 1.8 V to 5 V level translation
• High temperature operation: 125°C
• Fail-safe high or low options
• 16-lead, RoHS compliant, wide-body SOIC_IC package

Applications

• General-purpose multichannel isolation
• Serial peripheral interface (SPI)/data converter isolation
• Industrial field bus isolation