TAS6424LQDKQRQ1

Overview

The TAS6424LQDKQRQ1 is a four-channel Class-D digital input audio amplifier designed for automotive applications. It delivers 27 W of output power into a 4-ohm load and operates within a supply voltage range of 4.5 V to 18 V. The device features a 2-MHz PWM switching frequency, differential inputs, and an HSSOP-56 package. It supports I2S and TDM interfaces with sampling rates up to 96 kHz. Key electrical parameters include a THD+N of 0.02%, a maximum output current of 4.8 A, and a quiescent current of 15 mA. It meets AEC-Q100 Grade 1 standards for operation between -40°C and +125°C.

Feature Summary

• Digital input architecture supporting I2S and TDM protocols for high-resolution audio systems
• Integrated advanced load diagnostics enabling DC and AC detection without input clock signals
• Enhanced EMI management capabilities including spread spectrum and optimized slew rate control
• Robust protection mechanisms covering load dump, over-temperature, and short-circuit conditions

Applications

• Automotive audio head units
• External automotive amplifier modules

Procurement Notes

Verify the specific suffix QDKQRQ1 against official Texas Instruments documentation to confirm package type and tape-and-reel specifications. Ensure compatibility with system voltage requirements not exceeding 18 V. Confirm that the 4.5 V minimum operating voltage aligns with vehicle start-stop operational profiles. Validate thermal management solutions for the HSSOP-56 package under maximum load conditions.

Selection Notes

Select this component when a cost-optimized, low-power solution is required for multi-channel automotive audio. The 27 W per channel rating suits compact speaker configurations. The digital interface simplifies system design by eliminating external DACs. Consider the limited 18 V maximum voltage compared to higher-power variants if the application involves standard 12 V automotive electrical systems.

Part Context

This part belongs to the TAS6424L-Q1 family of digital input amplifiers. It shares the core 2-MHz switching technology and diagnostic features with higher-power siblings like the TAS6424-Q1 but offers reduced power output for smaller form factors. The device integrates seamlessly with TI's automotive audio ecosystem, providing standardized I2C control and diagnostic reporting.

Replacement Considerations

The TAS6424MQDKQRQ1 serves as a higher-power alternative within the same family. Verify pinout compatibility before substitution. Check datasheet differences regarding maximum supply voltage and thermal dissipation requirements.