ADUM1400CRW

Overview

The ADUM1400CRW is a quad-channel digital isolator utilizing iCoupler technology, combining high-speed CMOS with monolithic air core transformer technology. It provides 2500 Vrms isolation voltage and supports data rates up to 90 Mbps (NRZ). The device operates on supply voltages from 2.7 V to 5.5 V, featuring low power consumption of 0.7 mA per channel at 3 V for low data rates. Key electrical parameters include a maximum propagation delay skew of 10 ns, maximum pulse width distortion of 2 ns, and common-mode transient immunity exceeding 25 kV/µs. It is housed in a 16-lead SOIC wide body package.

Feature Summary

• Integrates four independent bidirectional channels within a single compact package
• Provides robust galvanic isolation between circuit domains without optical components
• Supports level translation between 3 V and 5 V logic systems
• Includes an output enable function for bus management

Applications

• SPI interface and data converter isolation
• RS-232, RS-422, and RS-485 transceiver isolation
• Industrial field bus isolation
• Automotive systems requiring multichannel isolation

Procurement Notes

Verify the specific suffix 'CRW' corresponds to the commercial temperature range (-40°C to +105°C) and tube packaging format. Confirm RoHS compliance status as indicated by the manufacturer's current documentation. Ensure the ordering part number matches the required lead-free specifications and regulatory approvals such as UL 1577 or VDE certificates before finalizing procurement.

Selection Notes

Select this component when high channel density and precise timing characteristics are required for general-purpose isolation. It is suitable for applications demanding low power consumption at moderate data rates. Consider the 16-lead SOIC package constraints for PCB layout. Evaluate if the 90 Mbps data rate meets system requirements compared to higher-speed variants like the ADUM1402 series.

Part Context

This device belongs to the ADuM1400/ADuM1401/ADuM1402 family of quad-channel digital isolators. These components replace traditional optocouplers by offering superior performance through magnetic coupling technology. The family shares similar pinouts and functional blocks, differing primarily in data rate capabilities and channel directionality configurations.

Replacement Considerations

The ADUM1402ARW is listed as a discontinued alternative. Verify compatibility with newer revisions or equivalent parts from Analog Devices that maintain the 16-lead SOIC footprint and 2500 Vrms isolation rating.