ISO7320FCQDQ1

Overview

The ISO7320FCQDQ1 is an automotive-grade, low-power, dual-channel digital isolator from Texas Instruments. It features a 2/0 channel configuration with unidirectional data flow. The device operates on a supply voltage range of 3 V to 5.5 V and supports data rates up to 25 Mb/s. Key electrical specifications include an insulation voltage of 3000 Vrms, a propagation delay of 32 ns, and a typical operating supply current of 4.9 mA. It utilizes capacitive coupling for isolation and offers high common-mode transient immunity. The component is housed in an 8-pin SOIC package and is rated for operation between -40°C and +125°C.

Feature Summary

• Automotive qualification compliant with AEC-Q100 standards for robust reliability in vehicle applications
• Low power consumption design optimized for energy-efficient signal transmission across isolation barriers
• High electromagnetic compatibility performance ensuring stable operation in electrically noisy environments

Applications

• Automotive battery management systems requiring isolated communication
• Electric vehicle motor control units needing reliable signal isolation
• Charging station interfaces demanding secure data transfer between high and low voltage domains

Procurement Notes

Verify the complete part number including suffixes such as QDRQ1 to ensure correct automotive grade and tape-and-reel packaging. Confirm that the supplier provides traceability documentation required for automotive supply chains. Check for RoHS compliance status and ensure the component matches the specific SOIC-8 package dimensions. Validate that the source is an authorized distributor to guarantee authenticity and prevent counterfeit risks in safety-critical applications.

Selection Notes

Choose this component when automotive certification is mandatory for the target application. Select it for designs requiring bidirectional isolation where only one direction is needed per channel pair. Consider the 3000 Vrms isolation rating for basic or reinforced isolation requirements. Evaluate the 25 Mb/s data rate against system timing constraints. Ensure the 8-pin SOIC footprint fits the PCB layout constraints compared to wider packages.

Part Context

This device belongs to the ISO7320-Q1 family of automotive digital isolators. It shares architectural similarities with other members like the ISO7320FCDR but differs in qualification level and packaging options. The family emphasizes low power and high EMC performance. It serves as a bridge between microcontrollers and isolated sensors or actuators in harsh automotive electrical environments.

Replacement Considerations

Direct substitutes within the same automotive qualified family include the ISO7320FCQDRQ1. Verify pinout compatibility and electrical parameters before swapping. Non-automotive equivalents like the ISO7320FCDR lack the required automotive reliability certifications and should not be used in certified vehicle systems without re-validation.