ADUM7240ARZ

Overview

The ADUM7240ARZ is a dual-channel digital isolator from Analog Devices, utilizing iCoupler technology to provide electrical isolation between circuits. It features a 1 kVrms insulation voltage and supports data rates up to 1 Mb/s. The device operates within a supply voltage range of 3 V to 5.5 V, with typical operating currents of 1.7 mA and 2.2 mA for the respective channels. It exhibits a propagation delay of 50 ns and a common-mode transient immunity of 15 kV/µs. The component is housed in an 8-SOIC package and functions reliably across an extended temperature range from -40°C to +105°C.

Feature Summary

• Integrates high-speed CMOS logic with monolithic air-core transformer technology for robust signal transmission.
• Provides bidirectional data communication capability within isolated circuit domains.
• Ensures galvanic isolation through magnetic coupling without requiring external magnetics.

Applications

• Industrial automation systems requiring isolated sensor interfaces
• Medical equipment needing patient isolation barriers
• Power metering applications involving high-voltage monitoring

Procurement Notes

Verify the specific suffix (e.g., ARZ) against official datasheets to confirm package type and temperature rating. Confirm RoHS compliance status directly with the manufacturer or authorized distributors. Ensure the ordering quantity matches the required packaging format, such as tube or reel, as availability may vary by region. Cross-reference the part number with the latest Analog Devices documentation to avoid obsolete variants.

Selection Notes

Select this component when a dual-channel solution is required for general-purpose isolation at 1 kVrms. Consider the 1 Mb/s data rate limit and 50 ns propagation delay for timing-sensitive designs. Evaluate the 8-SOIC footprint constraints against PCB layout requirements. Compare power consumption figures against other isolators if low-power operation is critical for the system design.

Part Context

This part belongs to the ADUM7240 series of digital isolators. It is designed to replace optocouplers in many applications, offering superior performance in speed, power consumption, and reliability. The series leverages proprietary iCoupler technology to integrate isolation barriers directly into the silicon die.

Replacement Considerations

Check for direct pin-compatible alternatives within the ADUM family, such as the ADUM7241, which offers similar specifications. Verify that any substitute maintains the same 1 kVrms isolation rating and SOIC-8 package dimensions to ensure mechanical compatibility.