ADUM1245ARSZ

Overview

The ADUM1245ARSZ is a micropower, dual-channel digital isolator manufactured by Analog Devices Inc. It utilizes iCoupler technology for magnetic coupling isolation. The device operates within a supply voltage range of 2.25 V to 3.6 V and supports data rates up to 2 Mbps. It features bidirectional communication channels with a common-mode transient immunity of 25 kV/µs. The component is housed in a 20-lead SSOP package (0.209 inch width) and is rated for operation between -40°C and +125°C.

Feature Summary

• Micropower operation suitable for energy-efficient designs
• Bidirectional communication capability across isolated boundaries
• High common-mode transient immunity for noise resilience

Applications

• Industrial process control systems requiring galvanic isolation
• Medical equipment needing safety-certified signal isolation
• Power metering applications involving high-voltage sensing

Procurement Notes

Verify the specific package variant, as the ADUM1245 series includes both SOIC-8 and SSOP options. Confirm that the 20-lead SSOP form factor matches your PCB footprint requirements. Ensure the 3.3 V logic level compatibility aligns with your system's I/O standards. Check for RoHS compliance status if required by your manufacturing regulations.

Selection Notes

Select this component when low power consumption is critical alongside high-speed digital isolation. The 2 Mbps rate suits many serial communication protocols. Consider the 20-lead SSOP package size constraints against available board space. Verify that the 3750 Vrms isolation rating meets your safety clearance requirements.

Part Context

This part belongs to the ADUM1245 family of ultralow power digital isolators. It shares functional similarities with other iCoupler devices but differs in channel count and package style. The ARSZ suffix indicates the specific lead-free, halogen-free version in the SSOP package. It serves as an alternative to optocouplers in modern interface designs.

Replacement Considerations

Direct substitutes include the ADUM1245ARZ (SOIC-8 package) for pin-compatible layout changes. The ADUM1245ARSZ-RL7 offers the same functionality in tape-and-reel packaging for automated assembly. Verify pinout compatibility before swapping between package types.