ایزولاتور ایزولاتور دیجیتال

Product Attributes

Introduction

The ADuM240D/ADuM240E/ADuM241D/ADuM241E/ADuM242D/ADuM242E are quad-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 3 ns at 5V operation. Channel matching is tight at 3.0 ns maximum. The ADuM240D/ADuM240E/ADuM241D/ADuM241E/ADuM242D/ADuM242E 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 1.8V to 5V, 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 output's transition to a predetermined state when the input power supply is not applied or the inputs are disabled. The ADuM240E1/ADuM241E1/ ADuM242E1 are pin compatible with the ADuM2400/ADuM2401/ADuM2402.

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: 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; VIOMR = 849 V peak; 8000 V peak reinforced surge isolation voltage; CQC certification per GB4943.1 - 2011
• Backward compatibility: ADuM240E1/ADuM241E1/ADuM242E1 pin compatible with ADuM2400/ADuM2401/ADuM2402
• 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, SOIC package
• Qualified for automotive applications

Applications

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