TAS5424TDKDRQ1

Overview

The Texas Instruments TAS5424TDKDRQ1 is a four-channel automotive digital power amplifier featuring differential analog inputs for enhanced noise immunity. It operates within an 8 V to 22 V supply range and delivers up to 28 W per channel into 4 Ω at 14.4 V, or 58 W per channel into 4 Ω at 21 V. The device utilizes Class-D topology with configurable gains of 12 dB, 20 dB, 26 dB, and 32 dB via an I²C interface. Channels can be paralleled in PBTL mode for 1-Ω loads, achieving 116 W per channel at 21 V. It includes load diagnostics, protection functions, and AEC-Q100 compliance.

Feature Summary

• Four-channel digital audio amplification with differential input architecture for improved common-mode noise rejection.
• Configurable voltage gain settings selectable via I²C serial interface for flexible system integration.
• Integrated load diagnostic capabilities detecting output open circuits, shorts to power, and shorts to ground.
• Comprehensive protection mechanisms including overtemperature shutdown, over/undervoltage lockout, and short-circuit current limiting.

Applications

• High-power OEM automotive head units
• External automotive amplifier modules
• PBTL amplifier configurations requiring reduced heat dissipation

Procurement Notes

Verify the specific suffix 'RQ1' against the official datasheet to confirm tape-and-reel packaging and automotive qualification status. Ensure the ordering part number matches the exact package variant required for your PCB footprint. Cross-reference the manufacturer's latest documentation for any product change notices or lifecycle status updates prior to finalizing procurement.

Selection Notes

Select this component when differential signal integrity is critical due to high electromagnetic interference environments. The I²C control allows dynamic gain adjustment and monitoring without external logic. Verify thermal management requirements as the device requires adequate heatsinking to maintain junction temperatures within specified limits during high-power operation.

Part Context

This device belongs to the TAS5414/TAS5424 family of four-channel automotive digital amplifiers. While the TAS5414 uses single-ended inputs, the TAS5424 variant specifically employs differential inputs to mitigate system noise. Both share identical power stages, protection features, and thermal characteristics, differing primarily in their analog input configuration and pin count.

Replacement Considerations

The TAS5424ATDKDRMQ1 is listed as obsolete with no confirmed public substitute. Check for TAS5424 variants with different suffixes that may offer updated packaging or availability while maintaining functional compatibility.

FAQ

How does the TAS5424 handle pop-and-click noises during mute transitions?

It utilizes patented pop-and-click reduction technology that ramps gain gradually during mute commands and manages switching startup sequences to minimize audible artifacts.

What is the maximum supply voltage for the I²C reporting circuitry?

The I²C reporting circuitry supports a DC supply voltage range up to 26.5 V, allowing robust communication even under automotive load dump conditions.