ISO7730QDBQRQ1

Overview

The ISO7730QDBQRQ1 is an automotive-grade digital isolator from Texas Instruments, featuring three unidirectional channels in a 16-pin SSOP package. It utilizes capacitive coupling technology to provide electrical isolation with a rated insulation voltage of 2500 Vrms. The device supports data rates up to 100 Mb/s and operates within a supply voltage range of 2.25 V to 5.5 V. Key performance metrics include a typical propagation delay of 11 ns, a maximum power dissipation of 150 mW, and a working supply current of 17.5 mA. It is certified under AEC-Q100 standards for automotive applications and functions reliably across a temperature range of -40°C to +125°C.

Feature Summary

• Automotive qualification compliant with AEC-Q100 standards for robust reliability in vehicle environments
• Capacitive coupling isolation architecture providing high electromagnetic compatibility (EMC) immunity
• Triple-channel unidirectional signal transmission capability for efficient multi-line isolation
• Wide operating temperature range suitable for demanding industrial and automotive thermal conditions

Applications

• Automotive electronic control units requiring isolated communication interfaces
• In-vehicle networks utilizing CAN or LIN protocols for noise-resistant data transfer
• Industrial automation systems needing galvanic isolation between microcontrollers and sensors
• Power management circuits where feedback loops require safe separation from high-voltage domains

Procurement Notes

Verify the complete part number including the Q1 suffix to ensure automotive grade certification. Confirm the DBQR suffix corresponds to the SSOP-16 package and reel packaging format. Check RoHS compliance status as indicated in official documentation. Ensure design-in compatibility with required isolation voltage ratings for the specific application safety standards.

Selection Notes

Select this component when three isolated bidirectional or unidirectional channels are required in a compact surface-mount package. Consider the 2500 Vrms insulation rating against system voltage requirements. Evaluate the 100 Mb/s data rate suitability for the target communication protocol speed. Compare power consumption characteristics against other isolator technologies if energy efficiency is critical.

Part Context

This device belongs to the ISO7730-Q1 family of automotive digital isolators. It shares architectural similarities with the ISO7740-Q1 but offers a different channel configuration. The product line emphasizes robust EMC performance and low power consumption for modern automotive electronics. It complements other interface solutions by providing reliable signal integrity across isolation barriers.

Replacement Considerations

Direct replacements may include the ISO7730QDWRQ1, which offers similar functionality in a SOIC-16 package. Designers should verify pinout compatibility and package dimensions before substitution. Alternative channel counts such as dual or quad configurations require separate evaluation.