ISO7220AQDRQ1

Overview

The ISO7220AQDRQ1 is an automotive-grade, dual-channel digital isolator from Texas Instruments, designed for robust signal transmission across isolation barriers. It features a unidirectional channel configuration with two forward channels and zero reverse channels. The device supports data rates up to 1Mbps and offers a high common-mode transient immunity of 25kV/µs. It operates within a supply voltage range of 3V to 5.5V and is housed in an 8-SOIC package. Certified under AEC-Q100 standards, it ensures reliability in harsh automotive environments.

Feature Summary

• Automotive qualification compliant with AEC-Q100 standards for long-term reliability
• High common-mode transient immunity ensuring stable operation in noisy environments
• Capacitive coupling technology providing galvanic isolation without magnetic interference

Applications

• Automotive engine control units requiring isolated communication
• Inverter gate drive circuits in electric vehicle powertrains
• Isolated CAN transceivers and LIN bus interfaces

Procurement Notes

Verify the specific suffix DRQ1 confirms the tape-and-reel packaging format and automotive grade status. Ensure the ordering part number matches the exact channel configuration (2/0) and speed rating. Cross-reference the manufacturer datasheet revision to confirm pinout compatibility and electrical characteristics before finalizing procurement orders.

Selection Notes

Select this component when bidirectional isolation is not required, as it provides only forward channels. It is suitable for applications needing moderate data rates up to 1Mbps rather than high-speed signaling options. Consider the 8-SOIC package dimensions for PCB layout constraints and verify that the 4000Vpk isolation voltage meets the system safety requirements.

Part Context

This device belongs to the ISO722x-Q1 family of dual-channel digital isolators. It shares the same core architecture and package footprint with variants like the ISO7221AQDRQ1, differing primarily in channel directionality. The family utilizes capacitive isolation technology to provide cost-effective and reliable signal isolation for automotive electronic systems.

Replacement Considerations

The ISO7221AQDRQ1 serves as a functional substitute if bidirectional isolation is needed instead of unidirectional. Verify that the replacement maintains the same AEC-Q100 qualification and SOIC-8 package dimensions to ensure mechanical and thermal compatibility.