ISO7730FDBQ

Overview

The ISO7730FDBQ is a Texas Instruments digital isolator featuring three unidirectional channels in an SSOP-16 package. It utilizes capacitive coupling for signal transmission with a data rate of 100 Mb/s and propagation delay of 11 ns. The device supports a supply voltage range of 2.25 V to 5.5 V, drawing 17.5 mA during operation. It offers reinforced insulation rated at 3000 Vrms (or 2500 Vrms per channel depending on specific rating context) and withstands common-mode transients of 85 kV/µs. Operating temperatures span from -55°C to +125°C, with rise/fall times of 3.9 ns and pulse width distortion of 0.6 ns.

Feature Summary

• Robust electromagnetic compatibility performance with high common-mode transient immunity
• Reinforced isolation architecture providing enhanced safety standards compliance
• Unidirectional signal transmission across three independent channels

Applications

• Industrial automation control systems requiring galvanic isolation
• Medical equipment needing reinforced isolation for patient safety
• Power electronics monitoring and gate drive circuits

Procurement Notes

Verify the specific insulation voltage rating (3000 Vrms vs 2500 Vrms) against the official datasheet revision, as sources vary. Confirm the SSOP-16 package dimensions match your PCB footprint requirements. Ensure the unidirectional configuration aligns with your circuit design needs. Check humidity sensitivity handling instructions prior to assembly. Validate RoHS compliance status for your region's regulatory requirements.

Selection Notes

Select this component when reinforced isolation and robust EMC performance are critical. The 100 Mb/s data rate suits moderate-speed digital interfaces. Consider the wide operating temperature range (-55°C to +125°C) for harsh environments. The unidirectional nature limits use cases compared to bidirectional alternatives. Evaluate power consumption at 17.5 mA against system budget constraints.

Part Context

Part of the ISO7730 series of high-speed digital isolators. Shares specifications with ISO7730DBQR but differs in packaging or qualification level. Related automotive-grade variants include ISO7730QDBQRQ1. The F suffix typically denotes specific tape-and-reel packaging configurations within the product family.

Replacement Considerations

ISO7730DBQR serves as a direct functional equivalent with identical electrical characteristics. ISO7730FDBQR may offer alternative packaging options. Automotive applications require ISO7730QDBQRQ1 for AEC-Q100 qualification. Verify pinout compatibility before substitution.