ISO7330CQDWRQ1

Overview

The ISO7330CQDWRQ1 is an automotive-grade, low-power, triple-channel digital isolator from Texas Instruments. It features capacitive coupling for galvanic isolation with a rated insulation voltage of 3000 Vrms. The device supports data rates up to 25 Mb/s and operates within a supply voltage range of 3 V to 5.5 V. Key electrical parameters include a typical propagation delay of 36 ns, a maximum rise time of 3 ns, and a maximum fall time of 2 ns. It consumes approximately 7 mA of quiescent current per channel. The component is qualified to AEC-Q100 standards and functions reliably across an operating temperature range from -40°C to +125°C.

Feature Summary

• Provides robust galvanic isolation via capacitive coupling technology suitable for harsh automotive environments.
• Delivers high common-mode transient immunity (CMTI) to maintain signal integrity in noisy systems.
• Optimized for low power consumption, making it efficient for battery-operated or thermally constrained applications.
• Certified for automotive use, ensuring compliance with strict reliability and quality standards.

Applications

• Automotive gateway systems requiring isolated communication between domains.
• Inverter control circuits in electric vehicle powertrains.
• Battery management systems (BMS) for cell monitoring and balancing.
• On-board charger (OBC) interfaces for hybrid and electric vehicles.

Procurement Notes

Verify the specific suffix 'CQDWRQ1' to ensure correct package type (SOIC-16), tape-and-reel packaging, and automotive qualification status. Confirm that the ordering part number matches the required insulation voltage and data rate specifications for your design. Cross-reference the manufacturer's latest datasheet for any updates on recommended operating conditions or pin configurations before finalizing procurement.

Selection Notes

Select this component when designing automotive systems that require three isolated channels with moderate data speeds. It is suitable for applications where power efficiency is critical but higher bandwidth than dual-channel options is needed. Consider the SOIC-16 package constraints and thermal dissipation capabilities relative to your PCB layout. Ensure the system's common-mode noise levels remain within the specified CMTI limits to prevent signal errors.

Part Context

This device belongs to the ISO7330 family of automotive digital isolators. It complements other members like the ISO7320 (dual-channel) and ISO7340 (quad-channel) variants. The family shares similar low-power characteristics and capacitive isolation technology, allowing designers to scale channel counts while maintaining consistent interface behavior across different automotive subsystems.

Replacement Considerations

Direct substitutes within the same family include ISO7330FCQDWRQ1, which offers enhanced performance specifications. For non-automotive general-purpose applications, the ISO7330CDR may be considered if automotive qualification is not required. Always verify pin compatibility and electrical parameter overlaps before swapping components.