ISO7730DBQ

Overview

The ISO7730DBQ is a high-speed, robust-EMC reinforced triple-channel digital isolator manufactured by Texas Instruments. It utilizes capacitive coupling technology to provide electrical isolation between circuits. The device operates with a supply voltage range of 2.25 V to 5.5 V and supports data rates up to 100 Mb/s. Key electrical specifications include an insulation voltage of 2500 Vrms, a propagation delay of 11 ns, and a maximum rise/fall time of 3.9 ns. It features a unidirectional signal path with three forward channels and zero reverse channels. The component is housed in a 16-pin SSOP package and is rated for operation within a temperature range of -55°C to +125°C.

Feature Summary

• Provides reinforced insulation for safety-critical applications
• Features robust electromagnetic compatibility (EMC) performance
• Utilizes capacitive coupling for signal transmission

Applications

• Industrial communication systems requiring galvanic isolation
• Medical equipment needing reinforced isolation barriers
• Automotive electronic control units

Procurement Notes

Verify the specific suffix DBQ corresponds to the SSOP-16 package configuration. Confirm that the required insulation voltage rating of 2500 Vrms meets system safety standards. Ensure the operating temperature range of -55°C to +125°C aligns with environmental conditions. Check for RoHS compliance status if restricted substances are a constraint. Validate that the unidirectional channel configuration matches the circuit design requirements.

Selection Notes

Select this component when reinforced isolation is mandated by safety regulations rather than basic isolation. Consider the 100 Mb/s data rate limit for bandwidth requirements. Evaluate the 17.5 mA power consumption against thermal constraints. Compare the 2500 Vrms rating against higher voltage alternatives like the ISO7740 if greater isolation is needed. Ensure the SSOP-16 footprint fits the PCB layout.

Part Context

This part belongs to the ISO7730 series of digital isolators from Texas Instruments. It is distinct from the automotive-grade ISO7730QDWRQ1, which offers AEC-Q100 qualification and SOIC-16 packaging. It differs from the quad-channel ISO7740DBQR, which provides four channels and higher insulation voltage. The DBQ suffix specifically denotes the SSOP-16 surface-mount package variant.

Replacement Considerations

Direct functional substitutes include other Texas Instruments ISO773x series devices with compatible pinouts. Verify package compatibility when considering the ISO7730DBQR or ISO7731DBQR variants.