ADUM5242ARZ

Overview

The ADUM5242ARZ is a dual-channel digital isolator featuring an integrated isoPower isolated DC-to-DC converter. It provides regulated 5 V/10 mA output power for the secondary side, eliminating external transformer requirements. The device supports data rates up to 1 Mbps with unidirectional channel directionality options. It utilizes iCoupler magnetic coupling technology for signal isolation and operates within a supply voltage range of 2.7 V to 5.5 V. The component is housed in a narrow-body 8-lead SOIC package.

Feature Summary

• Integrates a chip-scale DC-to-DC converter providing up to 50 mW of regulated isolated power
• Provides dual independent signal isolation channels with configurable directionality
• Utilizes iCoupler technology for high common-mode transient immunity

Applications

• Industrial process control systems requiring galvanic isolation
• Medical equipment needing safe isolated signal transmission
• Smart metering applications with integrated power isolation needs

Procurement Notes

Verify the specific suffix (e.g., ARZ) against the manufacturer's current datasheet to confirm pinout compatibility and RoHS status. Ensure the required channel directionality matches the design configuration, as the ADUM5242 family supports both unidirectional and bidirectional variants. Confirm that the integrated 50 mW isoPower output meets the secondary circuit's power budget before procurement.

Selection Notes

Select this component when space-constrained designs require both signal isolation and isolated power generation in a single package. It is suitable for applications where the secondary side power consumption remains below 50 mW. Consider the 2500 Vrms isolation rating and 25 kV/µs CMTI for noisy environments. Evaluate the 1 Mbps data rate limit against system timing requirements.

Part Context

The ADUM5242 belongs to the ADuM524x family of IsoPwr digital isolators from Analog Devices. These devices combine iCoupler signal isolation with on-chip power conversion. This family allows designers to replace bulky discrete isolation solutions with compact, high-reliability integrated circuits suitable for modern low-power electronic systems.

Replacement Considerations

Direct substitutes include other ADUM524x variants such as ADUM5240 or ADUM5241, depending on the required channel directionality and power specifications. Verify package dimensions and pinout compatibility when cross-referencing with competitor products.